diff options
author | Alan Stern <stern@rowland.harvard.edu> | 2005-04-25 11:28:04 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-06-27 14:43:49 -0700 |
commit | 247f3105636caa9d1d8a4c3dfb755de42633bc80 (patch) | |
tree | f5fca7b566ee3304d661485a11dc4877652e7904 /drivers/usb/host | |
parent | 8ec8d20b21f00a36343ca0ebd6c6be9421724a1e (diff) | |
download | op-kernel-dev-247f3105636caa9d1d8a4c3dfb755de42633bc80.zip op-kernel-dev-247f3105636caa9d1d8a4c3dfb755de42633bc80.tar.gz |
[PATCH] USB HCDs: no longer need to register root hub
This patch changes the host controller drivers; they no longer need to
register their root hubs because usbcore will take care of it for them.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r-- | drivers/usb/host/ehci-hcd.c | 31 | ||||
-rw-r--r-- | drivers/usb/host/isp116x-hcd.c | 16 | ||||
-rw-r--r-- | drivers/usb/host/ohci-hcd.c | 30 | ||||
-rw-r--r-- | drivers/usb/host/sl811-hcd.c | 13 | ||||
-rw-r--r-- | drivers/usb/host/uhci-hcd.c | 25 |
5 files changed, 2 insertions, 113 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index bc69bd7..527abc6 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -492,8 +492,6 @@ static int ehci_start (struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci (hcd); u32 temp; - struct usb_device *udev; - struct usb_bus *bus; int retval; u32 hcc_params; u8 sbrn = 0; @@ -631,17 +629,6 @@ static int ehci_start (struct usb_hcd *hcd) /* set async sleep time = 10 us ... ? */ - /* wire up the root hub */ - bus = hcd_to_bus (hcd); - udev = first ? usb_alloc_dev (NULL, bus, 0) : bus->root_hub; - if (!udev) { -done2: - ehci_mem_cleanup (ehci); - return -ENOMEM; - } - udev->speed = USB_SPEED_HIGH; - udev->state = first ? USB_STATE_ATTACHED : USB_STATE_CONFIGURED; - /* * Start, enabling full USB 2.0 functionality ... usb 1.1 devices * are explicitly handed to companion controller(s), so no TT is @@ -664,24 +651,6 @@ done2: first ? "initialized" : "restarted", temp >> 8, temp & 0xff, DRIVER_VERSION); - /* - * From here on, khubd concurrently accesses the root - * hub; drivers will be talking to enumerated devices. - * (On restart paths, khubd already knows about the root - * hub and could find work as soon as we wrote FLAG_CF.) - * - * Before this point the HC was idle/ready. After, khubd - * and device drivers may start it running. - */ - if (first && usb_hcd_register_root_hub (udev, hcd) != 0) { - if (hcd->state == HC_STATE_RUNNING) - ehci_quiesce (ehci); - ehci_reset (ehci); - usb_put_dev (udev); - retval = -ENODEV; - goto done2; - } - writel (INTR_MASK, &ehci->regs->intr_enable); /* Turn On Interrupts */ if (first) diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 1183988..ff0a168 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1547,7 +1547,6 @@ static int isp116x_start(struct usb_hcd *hcd) { struct isp116x *isp116x = hcd_to_isp116x(hcd); struct isp116x_platform_data *board = isp116x->board; - struct usb_device *udev; u32 val; unsigned long flags; @@ -1609,24 +1608,9 @@ static int isp116x_start(struct usb_hcd *hcd) isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf); - spin_unlock_irqrestore(&isp116x->lock, flags); - - udev = usb_alloc_dev(NULL, &hcd->self, 0); - if (!udev) { - isp116x_stop(hcd); - return -ENOMEM; - } - udev->speed = USB_SPEED_FULL; hcd->state = HC_STATE_RUNNING; - if (usb_hcd_register_root_hub(udev, hcd) != 0) { - isp116x_stop(hcd); - usb_put_dev(udev); - return -ENODEV; - } - - spin_lock_irqsave(&isp116x->lock, flags); /* Set up interrupts */ isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE; if (board->remote_wakeup_enable) diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 0da9961..13cd217 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -505,13 +505,10 @@ static int ohci_init (struct ohci_hcd *ohci) /* Start an OHCI controller, set the BUS operational * resets USB and controller * enable interrupts - * connect the virtual root hub */ static int ohci_run (struct ohci_hcd *ohci) { u32 mask, temp; - struct usb_device *udev; - struct usb_bus *bus; int first = ohci->fminterval == 0; disable (ohci); @@ -672,36 +669,13 @@ retry: // POTPGT delay is bits 24-31, in 2 ms units. mdelay ((temp >> 23) & 0x1fe); - bus = &ohci_to_hcd(ohci)->self; ohci_to_hcd(ohci)->state = HC_STATE_RUNNING; ohci_dump (ohci, 1); - udev = bus->root_hub; - if (udev) { - return 0; - } - - /* connect the virtual root hub */ - udev = usb_alloc_dev (NULL, bus, 0); - if (!udev) { - disable (ohci); - ohci->hc_control &= ~OHCI_CTRL_HCFS; - ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); - return -ENOMEM; - } - - udev->speed = USB_SPEED_FULL; - if (usb_hcd_register_root_hub (udev, ohci_to_hcd(ohci)) != 0) { - usb_put_dev (udev); - disable (ohci); - ohci->hc_control &= ~OHCI_CTRL_HCFS; - ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); - return -ENODEV; - } + if (ohci_to_hcd(ohci)->self.root_hub == NULL) + create_debug_files (ohci); - register_reboot_notifier (&ohci->reboot_notifier); - create_debug_files (ohci); return 0; } diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index 1f2d00f..6c3f910b 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -1563,15 +1563,8 @@ static int sl811h_start(struct usb_hcd *hcd) { struct sl811 *sl811 = hcd_to_sl811(hcd); - struct usb_device *udev; /* chip has been reset, VBUS power is off */ - - udev = usb_alloc_dev(NULL, &hcd->self, 0); - if (!udev) - return -ENOMEM; - - udev->speed = USB_SPEED_FULL; hcd->state = HC_STATE_RUNNING; if (sl811->board) { @@ -1579,12 +1572,6 @@ sl811h_start(struct usb_hcd *hcd) hcd->power_budget = sl811->board->power * 2; } - if (usb_hcd_register_root_hub(udev, hcd) != 0) { - usb_put_dev(udev); - sl811h_stop(hcd); - return -ENODEV; - } - /* enable power and interupts */ port_power(sl811, 1); diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 6b87bd7..fdf5429 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -562,7 +562,6 @@ static int uhci_start(struct usb_hcd *hcd) int retval = -EBUSY; int i; dma_addr_t dma_handle; - struct usb_device *udev; struct dentry *dentry; hcd->uses_new_polling = 1; @@ -626,14 +625,6 @@ static int uhci_start(struct usb_hcd *hcd) goto err_create_qh_pool; } - /* Initialize the root hub */ - - udev = usb_alloc_dev(NULL, &hcd->self, 0); - if (!udev) { - dev_err(uhci_dev(uhci), "unable to allocate root hub\n"); - goto err_alloc_root_hub; - } - uhci->term_td = uhci_alloc_td(uhci); if (!uhci->term_td) { dev_err(uhci_dev(uhci), "unable to allocate terminating TD\n"); @@ -713,24 +704,11 @@ static int uhci_start(struct usb_hcd *hcd) configure_hc(uhci); start_rh(uhci); - - udev->speed = USB_SPEED_FULL; - - if (usb_hcd_register_root_hub(udev, hcd) != 0) { - dev_err(uhci_dev(uhci), "unable to start root hub\n"); - retval = -ENOMEM; - goto err_start_root_hub; - } - return 0; /* * error exits: */ -err_start_root_hub: - reset_hc(uhci); - del_timer_sync(&uhci->stall_timer); - err_alloc_skelqh: for (i = 0; i < UHCI_NUM_SKELQH; i++) if (uhci->skelqh[i]) { @@ -742,9 +720,6 @@ err_alloc_skelqh: uhci->term_td = NULL; err_alloc_term_td: - usb_put_dev(udev); - -err_alloc_root_hub: dma_pool_destroy(uhci->qh_pool); uhci->qh_pool = NULL; |