diff options
Diffstat (limited to 'drivers/usb/host')
38 files changed, 260 insertions, 194 deletions
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c index 18bafa9..bf7441a 100644 --- a/drivers/usb/host/ehci-au1xxx.c +++ b/drivers/usb/host/ehci-au1xxx.c @@ -23,6 +23,7 @@ static int au1xxx_ehci_setup(struct usb_hcd *hcd) int ret = ehci_init(hcd); ehci->need_io_watchdog = 0; + ehci_reset(ehci); return ret; } diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 3ff9f82..c4c76ab 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -48,6 +48,10 @@ #include <asm/system.h> #include <asm/unaligned.h> +#if defined(CONFIG_PPC_PS3) +#include <asm/firmware.h> +#endif + /*-------------------------------------------------------------------------*/ /* @@ -230,12 +234,58 @@ static int ehci_halt (struct ehci_hcd *ehci) STS_HALT, STS_HALT, 16 * 125); } +#if defined(CONFIG_USB_SUSPEND) && defined(CONFIG_PPC_PS3) + +/* + * The EHCI controller of the Cell Super Companion Chip used in the + * PS3 will stop the root hub after all root hub ports are suspended. + * When in this condition handshake will return -ETIMEDOUT. The + * STS_HLT bit will not be set, so inspection of the frame index is + * used here to test for the condition. If the condition is found + * return success to allow the USB suspend to complete. + */ + +static int handshake_for_broken_root_hub(struct ehci_hcd *ehci, + void __iomem *ptr, u32 mask, u32 done, + int usec) +{ + unsigned int old_index; + int error; + + if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) + return -ETIMEDOUT; + + old_index = ehci_read_frame_index(ehci); + + error = handshake(ehci, ptr, mask, done, usec); + + if (error == -ETIMEDOUT && ehci_read_frame_index(ehci) == old_index) + return 0; + + return error; +} + +#else + +static int handshake_for_broken_root_hub(struct ehci_hcd *ehci, + void __iomem *ptr, u32 mask, u32 done, + int usec) +{ + return -ETIMEDOUT; +} + +#endif + static int handshake_on_error_set_halt(struct ehci_hcd *ehci, void __iomem *ptr, u32 mask, u32 done, int usec) { int error; error = handshake(ehci, ptr, mask, done, usec); + if (error == -ETIMEDOUT) + error = handshake_for_broken_root_hub(ehci, ptr, mask, done, + usec); + if (error) { ehci_halt(ehci); ehci->rh_state = EHCI_RH_HALTED; @@ -620,6 +670,7 @@ static int ehci_init(struct usb_hcd *hcd) hw = ehci->async->hw; hw->hw_next = QH_NEXT(ehci, ehci->async->qh_dma); hw->hw_info1 = cpu_to_hc32(ehci, QH_HEAD); + hw->hw_info1 |= cpu_to_hc32(ehci, (1 << 7)); /* I = 1 */ hw->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT); hw->hw_qtd_next = EHCI_LIST_END(ehci); ehci->async->qh_state = QH_STATE_LINKED; @@ -677,22 +728,13 @@ static int ehci_init(struct usb_hcd *hcd) static int ehci_run (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); - int retval; u32 temp; u32 hcc_params; hcd->uses_new_polling = 1; /* EHCI spec section 4.1 */ - /* - * TDI driver does the ehci_reset in their reset callback. - * Don't reset here, because configuration settings will - * vanish. - */ - if (!ehci_is_TDI(ehci) && (retval = ehci_reset(ehci)) != 0) { - ehci_mem_cleanup(ehci); - return retval; - } + ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list); ehci_writel(ehci, (u32)ehci->async->qh_dma, &ehci->regs->async_next); @@ -1324,7 +1366,7 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_pxa168_driver #endif -#ifdef CONFIG_NLM_XLR +#ifdef CONFIG_CPU_XLR #include "ehci-xls.c" #define PLATFORM_DRIVER ehci_xls_driver #endif diff --git a/drivers/usb/host/ehci-octeon.c b/drivers/usb/host/ehci-octeon.c index ba1f513..c010488 100644 --- a/drivers/usb/host/ehci-octeon.c +++ b/drivers/usb/host/ehci-octeon.c @@ -155,6 +155,8 @@ static int ehci_octeon_drv_probe(struct platform_device *pdev) /* cache this readonly data; minimize chip reads */ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + ehci_reset(ehci); + ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) { dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret); diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index e39b029..e33baf9 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -228,6 +228,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) /* cache this readonly data; minimize chip reads */ omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params); + ehci_reset(omap_ehci); + ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) { dev_err(dev, "failed to add hcd with err %d\n", ret); diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c index 2dc32da..a20e496 100644 --- a/drivers/usb/host/ehci-ps3.c +++ b/drivers/usb/host/ehci-ps3.c @@ -21,6 +21,34 @@ #include <asm/firmware.h> #include <asm/ps3.h> +static void ps3_ehci_setup_insnreg(struct ehci_hcd *ehci) +{ + /* PS3 HC internal setup register offsets. */ + + enum ps3_ehci_hc_insnreg { + ps3_ehci_hc_insnreg01 = 0x084, + ps3_ehci_hc_insnreg02 = 0x088, + ps3_ehci_hc_insnreg03 = 0x08c, + }; + + /* PS3 EHCI HC errata fix 316 - The PS3 EHCI HC will reset its + * internal INSNREGXX setup regs back to the chip default values + * on Host Controller Reset (CMD_RESET) or Light Host Controller + * Reset (CMD_LRESET). The work-around for this is for the HC + * driver to re-initialise these regs when ever the HC is reset. + */ + + /* Set burst transfer counts to 256 out, 32 in. */ + + writel_be(0x01000020, (void __iomem *)ehci->regs + + ps3_ehci_hc_insnreg01); + + /* Enable burst transfer counts. */ + + writel_be(0x00000001, (void __iomem *)ehci->regs + + ps3_ehci_hc_insnreg03); +} + static int ps3_ehci_hc_reset(struct usb_hcd *hcd) { int result; @@ -49,6 +77,8 @@ static int ps3_ehci_hc_reset(struct usb_hcd *hcd) ehci_reset(ehci); + ps3_ehci_setup_insnreg(ehci); + return result; } diff --git a/drivers/usb/host/ehci-pxa168.c b/drivers/usb/host/ehci-pxa168.c index ac0c16e..8d0e7a2 100644 --- a/drivers/usb/host/ehci-pxa168.c +++ b/drivers/usb/host/ehci-pxa168.c @@ -299,7 +299,7 @@ static int __devinit ehci_pxa168_drv_probe(struct platform_device *pdev) ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs + 0x100; ehci->regs = hcd->regs + 0x100 + - HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); hcd->has_tt = 1; ehci->sbrn = 0x20; diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 4e4066c..36ca507 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -373,6 +373,17 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh) retry_xacterr: if ((token & QTD_STS_ACTIVE) == 0) { + /* Report Data Buffer Error: non-fatal but useful */ + if (token & QTD_STS_DBE) + ehci_dbg(ehci, + "detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n", + urb, + usb_endpoint_num(&urb->ep->desc), + usb_endpoint_dir_in(&urb->ep->desc) ? "in" : "out", + urb->transfer_buffer_length, + qtd, + qh); + /* on STALL, error, and short reads this urb must * complete and all its qtds must be recycled. */ @@ -647,7 +658,7 @@ qh_urb_transaction ( /* * data transfer stage: buffer setup */ - i = urb->num_sgs; + i = urb->num_mapped_sgs; if (len > 0 && i > 0) { sg = urb->sg; buf = sg_dma_address(sg); diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 024b65c..293f741 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -14,8 +14,6 @@ #include <linux/clk.h> #include <linux/platform_device.h> -#include <mach/regs-pmu.h> -#include <plat/cpu.h> #include <plat/ehci.h> #include <plat/usb-phy.h> @@ -136,6 +134,8 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev) /* cache this readonly data; minimize chip reads */ ehci->hcs_params = readl(&ehci->caps->hcs_params); + ehci_reset(ehci); + err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) { dev_err(&pdev->dev, "Failed to add USB HCD\n"); diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c index 54d1ab8..c1eda73 100644 --- a/drivers/usb/host/ehci-vt8500.c +++ b/drivers/usb/host/ehci-vt8500.c @@ -132,6 +132,8 @@ static int vt8500_ehci_drv_probe(struct platform_device *pdev) ehci_port_power(ehci, 1); + ehci_reset(ehci); + ret = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED); if (ret == 0) { diff --git a/drivers/usb/host/ehci-w90x900.c b/drivers/usb/host/ehci-w90x900.c index d661cf7..3d2e26c 100644 --- a/drivers/usb/host/ehci-w90x900.c +++ b/drivers/usb/host/ehci-w90x900.c @@ -78,6 +78,8 @@ static int __devinit usb_w90x900_probe(const struct hc_driver *driver, if (irq < 0) goto err4; + ehci_reset(ehci); + retval = usb_add_hcd(hcd, irq, IRQF_SHARED); if (retval != 0) goto err4; diff --git a/drivers/usb/host/ehci-xls.c b/drivers/usb/host/ehci-xls.c index b4fb511..72f0819 100644 --- a/drivers/usb/host/ehci-xls.c +++ b/drivers/usb/host/ehci-xls.c @@ -69,7 +69,7 @@ int ehci_xls_probe_internal(const struct hc_driver *driver, } hcd->rsrc_start = res->start; - hcd->rsrc_len = res->end - res->start + 1; + hcd->rsrc_len = resource_size(res); if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, driver->description)) { diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c index 4ed6d19..d262374 100644 --- a/drivers/usb/host/fhci-hcd.c +++ b/drivers/usb/host/fhci-hcd.c @@ -824,17 +824,7 @@ static struct platform_driver of_fhci_driver = { .remove = __devexit_p(of_fhci_remove), }; -static int __init fhci_module_init(void) -{ - return platform_driver_register(&of_fhci_driver); -} -module_init(fhci_module_init); - -static void __exit fhci_module_exit(void) -{ - platform_driver_unregister(&of_fhci_driver); -} -module_exit(fhci_module_exit); +module_platform_driver(of_fhci_driver); MODULE_DESCRIPTION("USB Freescale Host Controller Interface Driver"); MODULE_AUTHOR("Shlomi Gridish <gridish@freescale.com>, " diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 9037035..7916e56 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -297,17 +297,7 @@ static struct platform_driver fsl_usb2_mph_dr_driver = { .remove = __devexit_p(fsl_usb2_mph_dr_of_remove), }; -static int __init fsl_usb2_mph_dr_init(void) -{ - return platform_driver_register(&fsl_usb2_mph_dr_driver); -} -module_init(fsl_usb2_mph_dr_init); - -static void __exit fsl_usb2_mph_dr_exit(void) -{ - platform_driver_unregister(&fsl_usb2_mph_dr_driver); -} -module_exit(fsl_usb2_mph_dr_exit); +module_platform_driver(fsl_usb2_mph_dr_driver); MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c index 9bfac65..565d79f 100644 --- a/drivers/usb/host/hwa-hc.c +++ b/drivers/usb/host/hwa-hc.c @@ -776,7 +776,6 @@ static int hwahc_probe(struct usb_interface *usb_iface, goto error_alloc; } usb_hcd->wireless = 1; - set_bit(HCD_FLAG_SAW_IRQ, &usb_hcd->flags); wusbhc = usb_hcd_to_wusbhc(usb_hcd); hwahc = container_of(wusbhc, struct hwahc, wusbhc); hwahc_init(hwahc); diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c index 2ee18cf..6923bcb 100644 --- a/drivers/usb/host/imx21-hcd.c +++ b/drivers/usb/host/imx21-hcd.c @@ -1924,18 +1924,7 @@ static struct platform_driver imx21_hcd_driver = { .resume = NULL, }; -static int __init imx21_hcd_init(void) -{ - return platform_driver_register(&imx21_hcd_driver); -} - -static void __exit imx21_hcd_cleanup(void) -{ - platform_driver_unregister(&imx21_hcd_driver); -} - -module_init(imx21_hcd_init); -module_exit(imx21_hcd_cleanup); +module_platform_driver(imx21_hcd_driver); MODULE_DESCRIPTION("i.MX21 USB Host controller"); MODULE_AUTHOR("Martin Fuzzey"); diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index 27dfab8..fc72d44 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -32,6 +32,13 @@ static struct kmem_cache *qtd_cachep; static struct kmem_cache *qh_cachep; static struct kmem_cache *urb_listitem_cachep; +enum queue_head_types { + QH_CONTROL, + QH_BULK, + QH_INTERRUPT, + QH_END +}; + struct isp1760_hcd { u32 hcs_params; spinlock_t lock; @@ -40,7 +47,7 @@ struct isp1760_hcd { struct slotinfo int_slots[32]; int int_done_map; struct memory_chunk memory_pool[BLOCKS]; - struct list_head controlqhs, bulkqhs, interruptqhs; + struct list_head qh_list[QH_END]; /* periodic schedule support */ #define DEFAULT_I_TDPS 1024 @@ -406,12 +413,12 @@ static int priv_init(struct usb_hcd *hcd) { struct isp1760_hcd *priv = hcd_to_priv(hcd); u32 hcc_params; + int i; spin_lock_init(&priv->lock); - INIT_LIST_HEAD(&priv->interruptqhs); - INIT_LIST_HEAD(&priv->controlqhs); - INIT_LIST_HEAD(&priv->bulkqhs); + for (i = 0; i < QH_END; i++) + INIT_LIST_HEAD(&priv->qh_list[i]); /* * hw default: 1K periodic list heads, one per frame. @@ -930,9 +937,9 @@ void schedule_ptds(struct usb_hcd *hcd) struct isp1760_hcd *priv; struct isp1760_qh *qh, *qh_next; struct list_head *ep_queue; - struct usb_host_endpoint *ep; LIST_HEAD(urb_list); struct urb_listitem *urb_listitem, *urb_listitem_next; + int i; if (!hcd) { WARN_ON(1); @@ -944,28 +951,13 @@ void schedule_ptds(struct usb_hcd *hcd) /* * check finished/retired xfers, transfer payloads, call urb_done() */ - ep_queue = &priv->interruptqhs; - while (ep_queue) { + for (i = 0; i < QH_END; i++) { + ep_queue = &priv->qh_list[i]; list_for_each_entry_safe(qh, qh_next, ep_queue, qh_list) { - ep = list_entry(qh->qtd_list.next, struct isp1760_qtd, - qtd_list)->urb->ep; collect_qtds(hcd, qh, &urb_list); - if (list_empty(&qh->qtd_list)) { + if (list_empty(&qh->qtd_list)) list_del(&qh->qh_list); - if (ep->hcpriv == NULL) { - /* Endpoint has been disabled, so we - can free the associated queue head. */ - qh_free(qh); - } - } } - - if (ep_queue == &priv->interruptqhs) - ep_queue = &priv->controlqhs; - else if (ep_queue == &priv->controlqhs) - ep_queue = &priv->bulkqhs; - else - ep_queue = NULL; } list_for_each_entry_safe(urb_listitem, urb_listitem_next, &urb_list, @@ -998,17 +990,10 @@ void schedule_ptds(struct usb_hcd *hcd) * * I'm sure this scheme could be improved upon! */ - ep_queue = &priv->controlqhs; - while (ep_queue) { + for (i = 0; i < QH_END; i++) { + ep_queue = &priv->qh_list[i]; list_for_each_entry_safe(qh, qh_next, ep_queue, qh_list) enqueue_qtds(hcd, qh); - - if (ep_queue == &priv->controlqhs) - ep_queue = &priv->interruptqhs; - else if (ep_queue == &priv->interruptqhs) - ep_queue = &priv->bulkqhs; - else - ep_queue = NULL; } } @@ -1543,16 +1528,16 @@ static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, switch (usb_pipetype(urb->pipe)) { case PIPE_CONTROL: - ep_queue = &priv->controlqhs; + ep_queue = &priv->qh_list[QH_CONTROL]; break; case PIPE_BULK: - ep_queue = &priv->bulkqhs; + ep_queue = &priv->qh_list[QH_BULK]; break; case PIPE_INTERRUPT: if (urb->interval < 0) return -EINVAL; /* FIXME: Check bandwidth */ - ep_queue = &priv->interruptqhs; + ep_queue = &priv->qh_list[QH_INTERRUPT]; break; case PIPE_ISOCHRONOUS: dev_err(hcd->self.controller, "%s: isochronous USB packets " @@ -1714,8 +1699,8 @@ static void isp1760_endpoint_disable(struct usb_hcd *hcd, { struct isp1760_hcd *priv = hcd_to_priv(hcd); unsigned long spinflags; - struct isp1760_qh *qh; - struct isp1760_qtd *qtd; + struct isp1760_qh *qh, *qh_iter; + int i; spin_lock_irqsave(&priv->lock, spinflags); @@ -1723,14 +1708,17 @@ static void isp1760_endpoint_disable(struct usb_hcd *hcd, if (!qh) goto out; - list_for_each_entry(qtd, &qh->qtd_list, qtd_list) - if (qtd->status != QTD_RETIRE) { - dequeue_urb_from_qtd(hcd, qh, qtd); - qtd->urb->status = -ECONNRESET; - } + WARN_ON(!list_empty(&qh->qtd_list)); + for (i = 0; i < QH_END; i++) + list_for_each_entry(qh_iter, &priv->qh_list[i], qh_list) + if (qh_iter == qh) { + list_del(&qh_iter->qh_list); + i = QH_END; + break; + } + qh_free(qh); ep->hcpriv = NULL; - /* Cannot free qh here since it will be parsed by schedule_ptds() */ schedule_ptds(hcd); diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index a7dc1e1..b605224 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -47,9 +47,9 @@ static int of_isp1760_probe(struct platform_device *dev) int virq; resource_size_t res_len; int ret; - const unsigned int *prop; unsigned int devflags = 0; enum of_gpio_flags gpio_flags; + u32 bus_width = 0; drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL); if (!drvdata) @@ -77,8 +77,8 @@ static int of_isp1760_probe(struct platform_device *dev) devflags |= ISP1760_FLAG_ISP1761; /* Some systems wire up only 16 of the 32 data lines */ - prop = of_get_property(dp, "bus-width", NULL); - if (prop && *prop == 16) + of_property_read_u32(dp, "bus-width", &bus_width); + if (bus_width == 16) devflags |= ISP1760_FLAG_BUS_WIDTH_16; if (of_get_property(dp, "port1-otg", NULL) != NULL) diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c index 9b66df8..40d886a 100644 --- a/drivers/usb/host/ohci-au1xxx.c +++ b/drivers/usb/host/ohci-au1xxx.c @@ -173,12 +173,9 @@ static int ohci_hcd_au1xxx_drv_suspend(struct device *dev) * mark HW unaccessible, bail out if RH has been resumed. Use * the spinlock to properly synchronize with possible pending * RH suspend or resume activity. - * - * This is still racy as hcd->state is manipulated outside of - * any locks =P But that will be a different fix. */ spin_lock_irqsave(&ohci->lock, flags); - if (hcd->state != HC_STATE_SUSPENDED) { + if (ohci->rh_state != OHCI_RH_SUSPENDED) { rc = -EINVAL; goto bail; } diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c index d7d3449..5179fcd 100644 --- a/drivers/usb/host/ohci-dbg.c +++ b/drivers/usb/host/ohci-dbg.c @@ -127,6 +127,19 @@ static char *hcfs2string (int state) return "?"; } +static const char *rh_state_string(struct ohci_hcd *ohci) +{ + switch (ohci->rh_state) { + case OHCI_RH_HALTED: + return "halted"; + case OHCI_RH_SUSPENDED: + return "suspended"; + case OHCI_RH_RUNNING: + return "running"; + } + return "?"; +} + // dump control and status registers static void ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size) @@ -136,9 +149,10 @@ ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size) temp = ohci_readl (controller, ®s->revision) & 0xff; ohci_dbg_sw (controller, next, size, - "OHCI %d.%d, %s legacy support registers\n", + "OHCI %d.%d, %s legacy support registers, rh state %s\n", 0x03 & (temp >> 4), (temp & 0x0f), - (temp & 0x0100) ? "with" : "NO"); + (temp & 0x0100) ? "with" : "NO", + rh_state_string(controller)); temp = ohci_readl (controller, ®s->control); ohci_dbg_sw (controller, next, size, diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c index dc45d48..3d63574 100644 --- a/drivers/usb/host/ohci-ep93xx.c +++ b/drivers/usb/host/ohci-ep93xx.c @@ -179,8 +179,6 @@ static int ohci_hcd_ep93xx_drv_suspend(struct platform_device *pdev, pm_message_ ohci->next_statechange = jiffies; ep93xx_stop_hc(&pdev->dev); - hcd->state = HC_STATE_SUSPENDED; - return 0; } diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index b263919..4fa5d8c 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -209,7 +209,7 @@ static int ohci_urb_enqueue ( retval = -ENODEV; goto fail; } - if (!HC_IS_RUNNING(hcd->state)) { + if (ohci->rh_state != OHCI_RH_RUNNING) { retval = -ENODEV; goto fail; } @@ -274,7 +274,7 @@ static int ohci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) rc = usb_hcd_check_unlink_urb(hcd, urb, status); if (rc) { ; /* Do nothing */ - } else if (HC_IS_RUNNING(hcd->state)) { + } else if (ohci->rh_state == OHCI_RH_RUNNING) { urb_priv_t *urb_priv; /* Unless an IRQ completed the unlink while it was being @@ -321,7 +321,7 @@ ohci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep) rescan: spin_lock_irqsave (&ohci->lock, flags); - if (!HC_IS_RUNNING (hcd->state)) { + if (ohci->rh_state != OHCI_RH_RUNNING) { sanitize: ed->state = ED_IDLE; if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT) @@ -377,6 +377,7 @@ static void ohci_usb_reset (struct ohci_hcd *ohci) ohci->hc_control = ohci_readl (ohci, &ohci->regs->control); ohci->hc_control &= OHCI_CTRL_RWC; ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); + ohci->rh_state = OHCI_RH_HALTED; } /* ohci_shutdown forcibly disables IRQs and DMA, helping kexec and @@ -500,7 +501,7 @@ static int ohci_init (struct ohci_hcd *ohci) if (distrust_firmware) ohci->flags |= OHCI_QUIRK_HUB_POWER; - disable (ohci); + ohci->rh_state = OHCI_RH_HALTED; ohci->regs = hcd->regs; /* REVISIT this BIOS handshake is now moved into PCI "quirks", and @@ -575,7 +576,7 @@ static int ohci_run (struct ohci_hcd *ohci) int first = ohci->fminterval == 0; struct usb_hcd *hcd = ohci_to_hcd(ohci); - disable (ohci); + ohci->rh_state = OHCI_RH_HALTED; /* boot firmware should have set this up (5.1.1.3.1) */ if (first) { @@ -688,7 +689,7 @@ retry: ohci->hc_control &= OHCI_CTRL_RWC; ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER; ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); - hcd->state = HC_STATE_RUNNING; + ohci->rh_state = OHCI_RH_RUNNING; /* wake on ConnectStatusChange, matching external hubs */ ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status); @@ -725,7 +726,6 @@ retry: // POTPGT delay is bits 24-31, in 2 ms units. mdelay ((val >> 23) & 0x1fe); - hcd->state = HC_STATE_RUNNING; if (quirk_zfmicro(ohci)) { /* Create timer to watch for bad queue state on ZF Micro */ @@ -761,7 +761,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd) * of dead, unclocked, or unplugged (CardBus...) devices */ if (ints == ~(u32)0) { - disable (ohci); + ohci->rh_state = OHCI_RH_HALTED; ohci_dbg (ohci, "device removed!\n"); usb_hc_died(hcd); return IRQ_HANDLED; @@ -771,7 +771,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd) ints &= ohci_readl(ohci, ®s->intrenable); /* interrupt for some other device? */ - if (ints == 0 || unlikely(hcd->state == HC_STATE_HALT)) + if (ints == 0 || unlikely(ohci->rh_state == OHCI_RH_HALTED)) return IRQ_NOTMINE; if (ints & OHCI_INTR_UE) { @@ -786,8 +786,8 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd) schedule_work (&ohci->nec_work); } else { - disable (ohci); ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n"); + ohci->rh_state = OHCI_RH_HALTED; usb_hc_died(hcd); } @@ -871,11 +871,11 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd) if ((ints & OHCI_INTR_SF) != 0 && !ohci->ed_rm_list && !ohci->ed_to_check - && HC_IS_RUNNING(hcd->state)) + && ohci->rh_state == OHCI_RH_RUNNING) ohci_writel (ohci, OHCI_INTR_SF, ®s->intrdisable); spin_unlock (&ohci->lock); - if (HC_IS_RUNNING(hcd->state)) { + if (ohci->rh_state == OHCI_RH_RUNNING) { ohci_writel (ohci, ints, ®s->intrstatus); ohci_writel (ohci, OHCI_INTR_MIE, ®s->intrenable); // flush those writes @@ -929,7 +929,7 @@ static int ohci_restart (struct ohci_hcd *ohci) struct urb_priv *priv; spin_lock_irq(&ohci->lock); - disable (ohci); + ohci->rh_state = OHCI_RH_HALTED; /* Recycle any "live" eds/tds (and urbs). */ if (!list_empty (&ohci->pending)) @@ -1111,7 +1111,7 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ohci_hcd_ath79_driver #endif -#ifdef CONFIG_NLM_XLR +#ifdef CONFIG_CPU_XLR #include "ohci-xls.c" #define PLATFORM_DRIVER ohci_xls_driver #endif diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index 2f00040..836772d 100644 --- a/drivers/usb/host/ohci-hub.c +++ b/drivers/usb/host/ohci-hub.c @@ -111,6 +111,7 @@ __acquires(ohci->lock) if (!autostop) { ohci->next_statechange = jiffies + msecs_to_jiffies (5); ohci->autostop = 0; + ohci->rh_state = OHCI_RH_SUSPENDED; } done: @@ -140,7 +141,7 @@ __acquires(ohci->lock) if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) { /* this can happen after resuming a swsusp snapshot */ - if (hcd->state == HC_STATE_RESUMING) { + if (ohci->rh_state != OHCI_RH_RUNNING) { ohci_dbg (ohci, "BIOS/SMM active, control %03x\n", ohci->hc_control); status = -EBUSY; @@ -274,6 +275,7 @@ skip_resume: (void) ohci_readl (ohci, &ohci->regs->control); } + ohci->rh_state = OHCI_RH_RUNNING; return 0; } @@ -336,11 +338,8 @@ static void ohci_finish_controller_resume(struct usb_hcd *hcd) /* If needed, reinitialize and suspend the root hub */ if (need_reinit) { spin_lock_irq(&ohci->lock); - hcd->state = HC_STATE_RESUMING; ohci_rh_resume(ohci); - hcd->state = HC_STATE_QUIESCING; ohci_rh_suspend(ohci, 0); - hcd->state = HC_STATE_SUSPENDED; spin_unlock_irq(&ohci->lock); } diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index e4b8782..db39686 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -516,7 +516,6 @@ static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message) ohci->next_statechange = jiffies; omap_ohci_clock_power(0); - ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED; return 0; } diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index bc01b06..6109810 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -308,12 +308,9 @@ static int ohci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) * mark HW unaccessible, bail out if RH has been resumed. Use * the spinlock to properly synchronize with possible pending * RH suspend or resume activity. - * - * This is still racy as hcd->state is manipulated outside of - * any locks =P But that will be a different fix. */ spin_lock_irqsave (&ohci->lock, flags); - if (hcd->state != HC_STATE_SUSPENDED) { + if (ohci->rh_state != OHCI_RH_SUSPENDED) { rc = -EINVAL; goto bail; } diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c index 29dfefe..6313e44 100644 --- a/drivers/usb/host/ohci-pxa27x.c +++ b/drivers/usb/host/ohci-pxa27x.c @@ -502,8 +502,6 @@ static int ohci_hcd_pxa27x_drv_suspend(struct device *dev) ohci->ohci.next_statechange = jiffies; pxa27x_stop_hc(ohci, dev); - hcd->state = HC_STATE_SUSPENDED; - return 0; } diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index 15dc51d..c5a1ea9 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -912,7 +912,7 @@ rescan_all: /* only take off EDs that the HC isn't using, accounting for * frame counter wraps and EDs with partially retired TDs */ - if (likely (HC_IS_RUNNING(ohci_to_hcd(ohci)->state))) { + if (likely(ohci->rh_state == OHCI_RH_RUNNING)) { if (tick_before (tick, ed->tick)) { skip_ed: last = &ed->ed_next; @@ -1012,7 +1012,7 @@ rescan_this: /* but if there's work queued, reschedule */ if (!list_empty (&ed->td_list)) { - if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state)) + if (ohci->rh_state == OHCI_RH_RUNNING) ed_schedule (ohci, ed); } @@ -1021,9 +1021,7 @@ rescan_this: } /* maybe reenable control and bulk lists */ - if (HC_IS_RUNNING(ohci_to_hcd(ohci)->state) - && ohci_to_hcd(ohci)->state != HC_STATE_QUIESCING - && !ohci->ed_rm_list) { + if (ohci->rh_state == OHCI_RH_RUNNING && !ohci->ed_rm_list) { u32 command = 0, control = 0; if (ohci->ed_controltail) { diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c index a1877c4..56dcf06 100644 --- a/drivers/usb/host/ohci-s3c2410.c +++ b/drivers/usb/host/ohci-s3c2410.c @@ -486,15 +486,66 @@ static int __devexit ohci_hcd_s3c2410_drv_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int ohci_hcd_s3c2410_drv_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + struct platform_device *pdev = to_platform_device(dev); + unsigned long flags; + int rc = 0; + + /* + * Root hub was already suspended. Disable irq emission and + * mark HW unaccessible, bail out if RH has been resumed. Use + * the spinlock to properly synchronize with possible pending + * RH suspend or resume activity. + */ + spin_lock_irqsave(&ohci->lock, flags); + if (ohci->rh_state != OHCI_RH_SUSPENDED) { + rc = -EINVAL; + goto bail; + } + + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + s3c2410_stop_hc(pdev); +bail: + spin_unlock_irqrestore(&ohci->lock, flags); + + return rc; +} + +static int ohci_hcd_s3c2410_drv_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct platform_device *pdev = to_platform_device(dev); + + s3c2410_start_hc(pdev, hcd); + + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + ohci_finish_controller_resume(hcd); + + return 0; +} +#else +#define ohci_hcd_s3c2410_drv_suspend NULL +#define ohci_hcd_s3c2410_drv_resume NULL +#endif + +static const struct dev_pm_ops ohci_hcd_s3c2410_pm_ops = { + .suspend = ohci_hcd_s3c2410_drv_suspend, + .resume = ohci_hcd_s3c2410_drv_resume, +}; + static struct platform_driver ohci_hcd_s3c2410_driver = { .probe = ohci_hcd_s3c2410_drv_probe, .remove = __devexit_p(ohci_hcd_s3c2410_drv_remove), .shutdown = usb_hcd_platform_shutdown, - /*.suspend = ohci_hcd_s3c2410_drv_suspend, */ - /*.resume = ohci_hcd_s3c2410_drv_resume, */ .driver = { .owner = THIS_MODULE, .name = "s3c2410-ohci", + .pm = &ohci_hcd_s3c2410_pm_ops, }, }; diff --git a/drivers/usb/host/ohci-sh.c b/drivers/usb/host/ohci-sh.c index afc4eb6..84686d9 100644 --- a/drivers/usb/host/ohci-sh.c +++ b/drivers/usb/host/ohci-sh.c @@ -29,7 +29,6 @@ static int ohci_sh_start(struct usb_hcd *hcd) ohci_hcd_init(ohci); ohci_init(ohci); ohci_run(ohci); - hcd->state = HC_STATE_RUNNING; return 0; } diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c index 968cea2..5596ac2 100644 --- a/drivers/usb/host/ohci-sm501.c +++ b/drivers/usb/host/ohci-sm501.c @@ -224,7 +224,6 @@ static int ohci_sm501_suspend(struct platform_device *pdev, pm_message_t msg) ohci->next_statechange = jiffies; sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 0); - ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED; return 0; } diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c index 6987465..95c1648 100644 --- a/drivers/usb/host/ohci-spear.c +++ b/drivers/usb/host/ohci-spear.c @@ -203,7 +203,6 @@ static int spear_ohci_hcd_drv_suspend(struct platform_device *dev, ohci->next_statechange = jiffies; spear_stop_ohci(ohci_p); - ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED; return 0; } diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c index 06331d9..120bfe6 100644 --- a/drivers/usb/host/ohci-tmio.c +++ b/drivers/usb/host/ohci-tmio.c @@ -318,9 +318,6 @@ static int ohci_hcd_tmio_drv_suspend(struct platform_device *dev, pm_message_t s if (ret) return ret; } - - hcd->state = HC_STATE_SUSPENDED; - return 0; } diff --git a/drivers/usb/host/ohci-xls.c b/drivers/usb/host/ohci-xls.c index a3a9c6f..a224786 100644 --- a/drivers/usb/host/ohci-xls.c +++ b/drivers/usb/host/ohci-xls.c @@ -40,7 +40,7 @@ static int ohci_xls_probe_internal(const struct hc_driver *driver, goto err1; } hcd->rsrc_start = res->start; - hcd->rsrc_len = res->end - res->start + 1; + hcd->rsrc_len = resource_size(res); if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, driver->description)) { diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index 0795b93..8ff6f7e 100644 --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -344,6 +344,12 @@ typedef struct urb_priv { * a subset of what the full implementation needs. (Linus) */ +enum ohci_rh_state { + OHCI_RH_HALTED, + OHCI_RH_SUSPENDED, + OHCI_RH_RUNNING +}; + struct ohci_hcd { spinlock_t lock; @@ -384,6 +390,7 @@ struct ohci_hcd { /* * driver state */ + enum ohci_rh_state rh_state; int num_ports; int load [NUM_INTS]; u32 hc_control; /* copy of hc control reg */ @@ -679,11 +686,6 @@ static inline u16 ohci_hwPSW(const struct ohci_hcd *ohci, /*-------------------------------------------------------------------------*/ -static inline void disable (struct ohci_hcd *ohci) -{ - ohci_to_hcd(ohci)->state = HC_STATE_HALT; -} - #define FI 0x2edf /* 12000 bits per frame (-1) */ #define FSMP(fi) (0x7fff & ((6 * ((fi) - 210)) / 7)) #define FIT (1 << 31) @@ -707,7 +709,7 @@ static inline void periodic_reinit (struct ohci_hcd *ohci) #define read_roothub(hc, register, mask) ({ \ u32 temp = ohci_readl (hc, &hc->regs->roothub.register); \ if (temp == -1) \ - disable (hc); \ + hc->rh_state = OHCI_RH_HALTED; \ else if (hc->flags & OHCI_QUIRK_AMD756) \ while (temp & mask) \ temp = ohci_readl (hc, &hc->regs->roothub.register); \ diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index dcd8898..6f62de5 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -3951,24 +3951,7 @@ static struct platform_driver oxu_driver = { } }; -static int __init oxu_module_init(void) -{ - int retval = 0; - - retval = platform_driver_register(&oxu_driver); - if (retval < 0) - return retval; - - return retval; -} - -static void __exit oxu_module_cleanup(void) -{ - platform_driver_unregister(&oxu_driver); -} - -module_init(oxu_module_init); -module_exit(oxu_module_cleanup); +module_platform_driver(oxu_driver); MODULE_DESCRIPTION("Oxford OXU210HP HCD driver - ver. " DRIVER_VERSION); MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>"); diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c index f6ca80e..d2c6f5a 100644 --- a/drivers/usb/host/uhci-q.c +++ b/drivers/usb/host/uhci-q.c @@ -943,7 +943,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, if (usb_pipein(urb->pipe)) status |= TD_CTRL_SPD; - i = urb->num_sgs; + i = urb->num_mapped_sgs; if (len > 0 && i > 0) { sg = urb->sg; data = sg_dma_address(sg); diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c index a403b53..76083ae 100644 --- a/drivers/usb/host/whci/qset.c +++ b/drivers/usb/host/whci/qset.c @@ -443,7 +443,7 @@ static int qset_add_urb_sg(struct whc *whc, struct whc_qset *qset, struct urb *u remaining = urb->transfer_buffer_length; - for_each_sg(urb->sg, sg, urb->num_sgs, i) { + for_each_sg(urb->sg, sg, urb->num_mapped_sgs, i) { dma_addr_t dma_addr; size_t dma_remaining; dma_addr_t sp, ep; @@ -561,7 +561,7 @@ static int qset_add_urb_sg_linearize(struct whc *whc, struct whc_qset *qset, remaining = urb->transfer_buffer_length; - for_each_sg(urb->sg, sg, urb->num_sgs, i) { + for_each_sg(urb->sg, sg, urb->num_mapped_sgs, i) { size_t len; size_t sg_remaining; void *orig; diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 430e88f..35e257f 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -57,17 +57,15 @@ static void xhci_common_hub_descriptor(struct xhci_hcd *xhci, desc->bHubContrCurrent = 0; desc->bNbrPorts = ports; - /* Ugh, these should be #defines, FIXME */ - /* Using table 11-13 in USB 2.0 spec. */ temp = 0; - /* Bits 1:0 - support port power switching, or power always on */ + /* Bits 1:0 - support per-port power switching, or power always on */ if (HCC_PPC(xhci->hcc_params)) - temp |= 0x0001; + temp |= HUB_CHAR_INDV_PORT_LPSM; else - temp |= 0x0002; + temp |= HUB_CHAR_NO_LPSM; /* Bit 2 - root hubs are not part of a compound device */ /* Bits 4:3 - individual port over current protection */ - temp |= 0x0008; + temp |= HUB_CHAR_INDV_PORT_OCPM; /* Bits 6:5 - no TTs in root ports */ /* Bit 7 - no port indicators */ desc->wHubCharacteristics = cpu_to_le16(temp); @@ -86,9 +84,9 @@ static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, ports = xhci->num_usb2_ports; xhci_common_hub_descriptor(xhci, desc, ports); - desc->bDescriptorType = 0x29; + desc->bDescriptorType = USB_DT_HUB; temp = 1 + (ports / 8); - desc->bDescLength = 7 + 2 * temp; + desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp; /* The Device Removable bits are reported on a byte granularity. * If the port doesn't exist within that byte, the bit is set to 0. @@ -137,8 +135,8 @@ static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, ports = xhci->num_usb3_ports; xhci_common_hub_descriptor(xhci, desc, ports); - desc->bDescriptorType = 0x2a; - desc->bDescLength = 12; + desc->bDescriptorType = USB_DT_SS_HUB; + desc->bDescLength = USB_DT_SS_HUB_SIZE; /* header decode latency should be zero for roothubs, * see section 4.23.5.2. diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 9f1d4b1..d030f0b 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2390,17 +2390,7 @@ hw_died: irqreturn_t xhci_msi_irq(int irq, struct usb_hcd *hcd) { - irqreturn_t ret; - struct xhci_hcd *xhci; - - xhci = hcd_to_xhci(hcd); - set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags); - if (xhci->shared_hcd) - set_bit(HCD_FLAG_SAW_IRQ, &xhci->shared_hcd->flags); - - ret = xhci_irq(hcd); - - return ret; + return xhci_irq(hcd); } /**** Endpoint Ring Operations ****/ @@ -2561,7 +2551,7 @@ static unsigned int count_sg_trbs_needed(struct xhci_hcd *xhci, struct urb *urb) struct scatterlist *sg; sg = NULL; - num_sgs = urb->num_sgs; + num_sgs = urb->num_mapped_sgs; temp = urb->transfer_buffer_length; xhci_dbg(xhci, "count sg list trbs: \n"); @@ -2745,7 +2735,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, return -EINVAL; num_trbs = count_sg_trbs_needed(xhci, urb); - num_sgs = urb->num_sgs; + num_sgs = urb->num_mapped_sgs; total_packet_count = roundup(urb->transfer_buffer_length, usb_endpoint_maxp(&urb->ep->desc)); |
