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* Merge branch 'for-next' of ↵Linus Torvalds2015-09-011-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "The usual stuff from trivial tree for 4.3 (kerneldoc updates, printk() fixes, Documentation and MAINTAINERS updates)" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits) MAINTAINERS: update my e-mail address mod_devicetable: add space before */ scsi: a100u2w: trivial typo in printk i2c: Fix typo in i2c-bfin-twi.c treewide: fix typos in comment blocks Doc: fix trivial typo in SubmittingPatches proportions: Spelling s/consitent/consistent/ dm: Spelling s/consitent/consistent/ aic7xxx: Fix typo in error message pcmcia: Fix typo in locking documentation scsi/arcmsr: Fix typos in error log drm/nouveau/gr: Fix typo in nv10.c [SCSI] Fix printk typos in drivers/scsi staging: comedi: Grammar s/Enable support a/Enable support for a/ Btrfs: Spelling s/consitent/consistent/ README: GTK+ is a acronym ASoC: omap: Fix typo in config option description mm: tlb.c: Fix error message ntfs: super.c: Fix error log fix typo in Documentation/SubmittingPatches ...
| * treewide: fix typos in comment blocksMasahiro Yamada2015-08-071-1/+1
| | | | | | | | | | | | | | Looks like the word "contiguous" is often mistyped. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
| * drivers/usb/gadget/composite.c: i18n is not an acronymDiego Viola2015-08-071-2/+2
| | | | | | | | | | Signed-off-by: Diego Viola <diego.viola@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
* | usb: gadget: atmel: remove useless includeAlexandre Belloni2015-08-141-1/+0
| | | | | | | | | | | | | | | | Definitions from linux/platform_data/atmel.h are not used, remove the include. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge tag 'usb-for-v4.3' of ↵Greg Kroah-Hartman2015-08-1466-804/+1375
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: patches for v4.3 merge window New support for Allwinne SoC on the MUSB driver has been added to the list of glue layers. MUSB also got support for building all DMA engines in one binary; this will be great for distros. DWC3 now has no trace of dev_dbg()/dev_vdbg() usage. We will rely solely on tracing to debug DWC3. There was also a fix for memory corruption with EP0 when maxpacket size transfers are > 512 bytes. Robert's EP capabilities flags is making EP selection a lot simpler. UDCs are now required to set these flags up when adding endpoints to the framework. Other than these, we have the usual set of miscelaneous cleanups and minor fixes. Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: legacy: nokia: add CONFIG_BLOCK dependencyFelipe Balbi2015-08-061-0/+1
| | | | | | | | | | | | | | | | | | | | | g_nokia now has mass_storage function, so it should depend on CONFIG_BLOCK. Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: f_mass_storage: add mising <linux/uaccess.h>Felipe Balbi2015-08-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <linux/uaccess.h> was originally being pulled indirectly through some other header, however it's not anymore, so we need to include it directly Reported-by: Jim Davis <jim.epost@gmail.com> Suggested-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: remove gadget_chips.hRobert Baldyga2015-08-0615-74/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This header file contains helpers for quirks based on UDC controller name. Since we have generic quirk bitfields in usb_gadget structure for all of these quirks we don't need to have this header any longer. This patch removes gadget_chips.h file and makes sure that it's no longer included anywhere in kernel sources. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: musb: gadget: add musb_match_ep() functionRobert Baldyga2015-08-061-23/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add 'match_ep' callback to utilize chip-specific knowledge in endpoint matching process. Function does the same that was done by chip-specific code inside of epautoconf. Now this code can be removed from there to separate generic code from platform specific logic. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: goku_udc: add goku_match_ep() functionRobert Baldyga2015-08-062-18/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add 'match_ep' callback to utilize chip-specific knowledge in endpoint matching process. Function does the same that was done by chip-specific code inside of epautoconf. Now this code can be removed from there to separate generic code from platform specific logic. [ balbi@ti.com : fix build breakage ] Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: net2280: add net2280_match_ep() functionRobert Baldyga2015-08-062-22/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add 'match_ep' callback to utilize chip-specific knowledge in endpoint matching process. Function does the same that was done by chip-specific code inside of epautoconf. Now this code can be removed from there to separate generic code from platform specific logic. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: move find_ep() from epautoconf to udc-coreRobert Baldyga2015-08-062-21/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move find_ep() to udc-core and rename it to gadget_find_ep_by_name(). It can be used in UDC drivers, especially in 'match_ep' callback after moving chip-specific endpoint matching logic from epautoconf to UDC drivers. Replace all calls of find_ep() function with gadget_find_ep_by_name(). Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: move ep_matches() from epautoconf to udc-coreRobert Baldyga2015-08-062-84/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move ep_matches() function to udc-core and rename it to usb_gadget_ep_match_desc(). This function can be used by UDC drivers in 'match_ep' callback to avoid writing lots of repetitive code. Replace all calls of ep_matches() with usb_gadget_ep_match_desc(). Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: add 'ep_match' callback to usb_gadget_opsRobert Baldyga2015-08-061-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add callback that is called by epautoconf to allow UDC driver match the best endpoint for specific descriptor. It's intended to supply mechanism which allows to get rid of chip-specific endpoint matching code from epautoconf. If gadget has set 'ep_match' callback we prefer to call it first, and if it fails to find matching endpoint, then we try to use default matching algorithm. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: epautoconf: rework ep_matches() functionRobert Baldyga2015-08-061-49/+32
| | | | | | | | | | | | | | | | | | | | | Rework ep_matches() function to make it shorter and more readable. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: epautoconf: remove ep and desc configuration from ep_matches()Robert Baldyga2015-08-041-32/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As function ep_matches() is used to match endpoint with usb descriptor it's highly unintuitive that it modifies endpoint and descriptor structures fields. This patch moves code configuring ep and desc from ep_matches() to usb_ep_autoconfig_ss(), so now function ep_matches() does nothing more than its name suggests. [ balbi@ti.com : fix build warning ] Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: epautoconf: remove pxa quirk from ep_matches()Robert Baldyga2015-08-042-11/+3
| | | | | | | | | | | | | | | | | | | | | | | | The same effect can be achieved by using capabilities flags, so now we can get rid of handling of hardware specific limitations in generic code. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: epautoconf: add endpoint capabilities flags verificationRobert Baldyga2015-08-041-66/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce endpoint matching mechanism basing on endpoint capabilities flags. We check if endpoint supports transfer type and direction requested in ep descriptor. Since we have this new endpoint matching mechanism there is no need to have old code guessing endpoint capabilities basing on its name, so we are getting rid of it. Remove also the obsolete comment. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: atmel_usba_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+11
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: udc-xilinx: add ep capabilities supportRobert Baldyga2015-08-041-0/+9
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: s3c2410_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+10
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: s3c-hsudc: add ep capabilities supportRobert Baldyga2015-08-041-0/+15
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: r8a66597-udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+10
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: pxa27x_udc: add ep capabilities supportRobert Baldyga2015-08-041-15/+25
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: pxa25x_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+32
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: pch_udc: add ep capabilities supportRobert Baldyga2015-08-041-2/+12
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: omap_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+22
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: net2280: add ep capabilities supportRobert Baldyga2015-08-041-12/+55
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: net2272: add ep capabilities supportRobert Baldyga2015-08-041-0/+11
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: mv_udc_core: add ep capabilities supportRobert Baldyga2015-08-041-0/+9
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: mv_u3d_core: add ep capabilities supportRobert Baldyga2015-08-041-0/+9
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: m66592-udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+11
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: lpc32xx_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+32
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: gr_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+11
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: goku_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+8
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: fusb300_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+11
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: fsl_udc_core: add ep capabilities supportRobert Baldyga2015-08-041-0/+13
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: fsl_qe_udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+11
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: fotg210-udc: add ep capabilities supportRobert Baldyga2015-08-041-0/+11
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: dummy-hcd: add ep capabilities supportRobert Baldyga2015-08-041-15/+80
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: bdc: add ep capabilities supportRobert Baldyga2015-08-041-0/+9
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: bcm63xx_udc: add ep capabilities supportRobert Baldyga2015-08-041-4/+25
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: at91_udc: add ep capabilities supportRobert Baldyga2015-08-041-9/+29
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: amd5536udc: add ep capabilities supportRobert Baldyga2015-08-041-10/+78
| | | | | | | | | | | | | | | | | | | | | Convert endpoint configuration to new capabilities model. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: encapsulate endpoint claiming mechanismRobert Baldyga2015-08-041-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far it was necessary for usb functions to set ep->driver_data in endpoint obtained from autoconfig to non-null value, to indicate that endpoint is claimed by function (in autoconfig it was checked if endpoint has set this field to non-null value, and if it has, it was assumed that it is claimed). It could cause bugs because if some function doesn't set this field autoconfig could return the same endpoint more than one time. To help to avoid such bugs this patch adds claimed flag to struct usb_ep, and encapsulates endpoint claiming mechanism inside usb_ep_autoconfig_ss() and usb_ep_autoconfig_reset(), so now usb functions don't need to perform any additional actions to mark endpoint obtained from autoconfig as claimed. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: f_uac2: fix build warningFelipe Balbi2015-08-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 913e4a90b6f9 ("usb: gadget: f_uac2: finalize wMaxPacketSize according to bandwidth") added a possible build warning when calling min(). In order to fix the warning, we just make sure to call min_t() and tell that its arguments should be u16. Cc: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: f_printer: fix deadlock caused by nested spinlockFupan Li2015-08-031-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Function printer_func_disable() has called spinlock on printer_dev->lock, and it'll call function chain of printer_reset_interface() | +---dwc3_gadget_ep_disable() | +---__dwc3_gadget_ep_disable() | +---dwc3_remove_requests() | +---dwc3_gadget_giveback() | +---rx_complete() in the protected block. However, rx_complete() in f_printer.c calls spinlock on printer_dev->lock again, which will cause system hang. The following steps can reproduce this hang: 1. Build the test program from Documentation/usb/gadget_printer.txt as g_printer 2. Plug in the USB device to a host(such as Ubuntu). 3. on the USB device system run: #modprobe g_printer.ko #./g_printer -read_data 4. Unplug the USB device from the host The system will hang later. In order to avoid this deadlock, moving the spinlock from printer_func_disable() into printer_reset_interface() and excluding the block of calling dwc3_gadget_ep_disable(), in which the critical resource will be protected by its spinlock in rx_complete(). This commit will fix the system hang with the following calltrace: INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 0, t=21006 jiffies, g=524, c=523, q=2) sending NMI to all CPUs: NMI backtrace for cpu 3 CPU: 3 PID: 718 Comm: irq/22-dwc3 Not tainted 3.10.38-ltsi-WR6.0.0.11_standard #2 Hardware name: Intel Corp. VALLEYVIEW B3 PLATFORM/NOTEBOOK, BIOS BYTICRB1.86C.0092.R32.1410021707 10/02/2014 task: f44f4c20 ti: f40f6000 task.ti: f40f6000 EIP: 0060:[<c1824955>] EFLAGS: 00000097 CPU: 3 EIP is at _raw_spin_lock_irqsave+0x35/0x40 EAX: 00000076 EBX: f80fad00 ECX: 00000076 EDX: 00000075 ESI: 00000096 EDI: ffffff94 EBP: f40f7e20 ESP: f40f7e18 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 CR0: 8005003b CR2: b77ac000 CR3: 01c30000 CR4: 001007f0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 Stack: f474a720 f80fad00 f40f7e3c f80f93cc c135d486 00000000 f474a720 f468fb00 f4bea894 f40f7e54 f7e35f19 ffffff00 f468fb00 f468fb24 00000086 f40f7e64 f7e36577 f468fb00 f4bea810 f40f7e74 f7e365a8 f468fb00 f4bea894 f40f7e9c Call Trace: [<f80f93cc>] rx_complete+0x1c/0xb0 [g_printer] [<c135d486>] ? vsnprintf+0x166/0x390 [<f7e35f19>] dwc3_gadget_giveback+0xc9/0xf0 [dwc3] [<f7e36577>] dwc3_remove_requests+0x57/0x70 [dwc3] [<f7e365a8>] __dwc3_gadget_ep_disable+0x18/0x60 [dwc3] [<f7e366e9>] dwc3_gadget_ep_disable+0x89/0xf0 [dwc3] [<f80f9031>] printer_reset_interface+0x31/0x50 [g_printer] [<f80f9270>] printer_func_disable+0x20/0x30 [g_printer] [<f80e6d8b>] composite_disconnect+0x4b/0x90 [libcomposite] [<f7e39a8b>] dwc3_disconnect_gadget+0x38/0x43 [dwc3] [<f7e39ad4>] dwc3_gadget_disconnect_interrupt+0x3e/0x5a [dwc3] [<f7e373b8>] dwc3_thread_interrupt+0x5c8/0x610 [dwc3] [<c10ac518>] irq_thread_fn+0x18/0x30 [<c10ac800>] irq_thread+0x100/0x130 [<c10ac500>] ? irq_finalize_oneshot.part.29+0xb0/0xb0 [<c10ac650>] ? wake_threads_waitq+0x40/0x40 [<c10ac700>] ? irq_thread_dtor+0xb0/0xb0 [<c1057224>] kthread+0x94/0xa0 [<c182b337>] ret_from_kernel_thread+0x1b/0x28 [<c1057190>] ? kthread_create_on_node+0xc0/0xc0 Signed-off-by: Fupan Li <fupan.li@windriver.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: udc: fix spin_lock in pch_udcPengyu Ma2015-08-031-18/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When remove module g_serial on quark platform, the following Warning on: Modules linked in: usb_f_acm u_serial g_serial(-) pch_udc libcomposite configfs udc_core ad7298 industrialio_triggered_buffer kfifo_buf tpm_i2c_infineon indus CPU: 0 PID: 369 Comm: modprobe Not tainted 3.14.29ltsi-WR7.0.0.0_standard #6 Hardware name: Intel Corp. QUARK/CrossHill, BIOS 0x010100F5 01/01/2014 f641df0c f641df0c f641dec8 c15ac7fa f641defc c103084f c16c2356 f641df28 00000171 c16b855c 000009dd c15b2d6f 000009dd c15b2d6f f6bd2000 faae5480 00000000 f641df14 c10308a3 00000009 f641df0c c16c2356 f641df28 f641df2c Call Trace: [<c15ac7fa>] dump_stack+0x16/0x18 [<c103084f>] warn_slowpath_common+0x7f/0xa0 [<c15b2d6f>] ? preempt_count_sub+0x6f/0xc0 [<c15b2d6f>] ? preempt_count_sub+0x6f/0xc0 [<c10308a3>] warn_slowpath_fmt+0x33/0x40 [<c15b2d6f>] preempt_count_sub+0x6f/0xc0 [<faadbc82>] pch_udc_pcd_pullup+0x32/0xa0 [pch_udc] [<fa9747d9>] usb_gadget_remove_driver+0x29/0x60 [udc_core] [<fa974869>] usb_gadget_unregister_driver+0x59/0x80 [udc_core] [<faa78310>] usb_composite_unregister+0x10/0x20 [libcomposite] [<faae50f1>] cleanup+0xd/0xf [g_serial] [<c1084c47>] SyS_delete_module+0xf7/0x150 [<c111f8dd>] ? ____fput+0xd/0x10 [<c104b2ae>] ? task_work_run+0x6e/0xa0 [<c15afda5>] syscall_call+0x7/0x7 g_serial module on quark is depended on pch_udc module, ttyGSX cann't recieve data and warning on when remove g_serial. It was unlocked before the modification of the structure it was protecting, fix it as "lock -> unlock" to resolve this. Signed-off-by: Pengyu Ma <pengyu.ma@windriver.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
| * | usb: gadget: mass_storage: Use static array for lunsKrzysztof Opasiak2015-07-316-113/+50
| | | | | | | | | | | | | | | | | | | | | | | | This patch replace dynamicly allocated luns array with static one. This simplifies the code of mass storage function and modules. Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com>
| * | usb: gadget: mass_storage: Fix freeing luns sysfs implementationKrzysztof Opasiak2015-07-312-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use device_is_registered() instad of sysfs flag to determine if we should free sysfs representation of particular LUN. sysfs flag in fsg common determines if luns attributes should be exposed using sysfs. This flag is used when creating and freeing luns. Unfortunately there is no guarantee that this flag will not be changed between creation and removal of particular LUN. Especially because of lun.0 which is created during allocating instance of function. This may lead to resource leak or NULL pointer dereference: [ 62.539925] Unable to handle kernel NULL pointer dereference at virtual address 00000044 [ 62.548014] pgd = ec994000 [ 62.550679] [00000044] *pgd=6d7be831, *pte=00000000, *ppte=00000000 [ 62.556933] Internal error: Oops: 17 [#1] PREEMPT SMP ARM [ 62.562310] Modules linked in: g_mass_storage(+) [ 62.566916] CPU: 2 PID: 613 Comm: insmod Not tainted 4.2.0-rc4-00077-ge29ee91-dirty #125 [ 62.574984] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) [ 62.581061] task: eca56e80 ti: eca76000 task.ti: eca76000 [ 62.586450] PC is at kernfs_find_ns+0x8/0xe8 [ 62.590698] LR is at kernfs_find_and_get_ns+0x30/0x48 [ 62.595732] pc : [<c01277c0>] lr : [<c0127b88>] psr: 40010053 [ 62.595732] sp : eca77c40 ip : eca77c38 fp : 000008c1 [ 62.607187] r10: 00000001 r9 : c0082f38 r8 : ed41ce40 [ 62.612395] r7 : c05c1484 r6 : 00000000 r5 : 00000000 r4 : c0814488 [ 62.618904] r3 : 00000000 r2 : 00000000 r1 : c05c1484 r0 : 00000000 [ 62.625417] Flags: nZcv IRQs on FIQs off Mode SVC_32 ISA ARM Segment user [ 62.632620] Control: 10c5387d Table: 6c99404a DAC: 00000015 [ 62.638348] Process insmod (pid: 613, stack limit = 0xeca76210) [ 62.644251] Stack: (0xeca77c40 to 0xeca78000) [ 62.648594] 7c40: c0814488 00000000 00000000 c05c1484 ed41ce40 c0127b88 00000000 c0824888 [ 62.656753] 7c60: ed41d038 ed41d030 ed41d000 c012af4c 00000000 c0824858 ed41d038 c02e3314 [ 62.664912] 7c80: ed41d030 00000000 ed41ce04 c02d9e8c c070eda8 eca77cb4 000008c1 c058317c [ 62.673071] 7ca0: 000008c1 ed41d030 ed41ce00 ed41ce04 ed41d000 c02da044 ed41cf48 c0375870 [ 62.681230] 7cc0: ed9d3c04 ed9d3c00 ed52df80 bf000940 fffffff0 c03758f4 c03758c0 00000000 [ 62.689389] 7ce0: bf000564 c03614e0 ed9d3c04 bf000194 c0082f38 00000001 00000000 c0000100 [ 62.697548] 7d00: c0814488 c0814488 c086b1dc c05893a8 00000000 ed7e8320 00000000 c0128b88 [ 62.705707] 7d20: ed8a6b40 00000000 00000000 ed410500 ed8a6b40 c0594818 ed7e8320 00000000 [ 62.713867] 7d40: 00000000 c0129f20 00000000 c082c444 ed8a6b40 c012a684 00001000 00000000 [ 62.722026] 7d60: c0594818 c082c444 00000000 00000000 ed52df80 ed52df80 00000000 00000000 [ 62.730185] 7d80: 00000000 00000000 00000001 00000002 ed8e9b70 ed52df80 bf0006d0 00000000 [ 62.738345] 7da0: ed8e9b70 ed410500 ed618340 c036129c ed8c1c00 bf0006d0 c080b158 ed8c1c00 [ 62.746504] 7dc0: bf0006d0 c080b158 ed8c1c08 ed410500 c0082f38 ed618340 000008c1 c03640ac [ 62.754663] 7de0: 00000000 bf0006d0 c082c8dc c080b158 c080b158 c03642d4 00000000 bf003000 [ 62.762822] 7e00: 00000000 c0009784 00000000 00000001 00000000 c05849b0 00000002 ee7ab780 [ 62.770981] 7e20: 00000002 ed4105c0 0000c53e 000000d0 c0808600 eca77e5c 00000004 00000000 [ 62.779140] 7e40: bf000000 c0095680 c08075a0 ee001f00 ed4105c0 c00cadc0 ed52df80 bf000780 [ 62.787300] 7e60: ed4105c0 bf000780 00000001 bf0007c8 c0082f38 ed618340 000008c1 c0083e24 [ 62.795459] 7e80: 00000001 bf000780 00000001 eca77f58 00000001 bf000780 00000001 c00857f4 [ 62.803618] 7ea0: bf00078c 00007fff 00000000 c00835b4 eca77f58 00000000 c0082fac eca77f58 [ 62.811777] 7ec0: f05038c0 0003b008 bf000904 00000000 00000000 bf00078c 6e72656b 00006c65 [ 62.819936] 7ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 62.828095] 7f00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 62.836255] 7f20: 00000000 00000000 00000000 00000000 00000000 00000000 00000003 0003b008 [ 62.844414] 7f40: 0000017b c000f5c8 eca76000 00000000 0003b008 c0085df8 f04ef000 0001b8a9 [ 62.852573] 7f60: f0503258 f05030c2 f0509fe8 00000968 00000dc8 00000000 00000000 00000000 [ 62.860732] 7f80: 00000029 0000002a 00000011 00000000 0000000a 00000000 33f6eb00 0003b008 [ 62.868892] 7fa0: bef01cac c000f400 33f6eb00 0003b008 00000003 0003b008 00000000 00000003 [ 62.877051] 7fc0: 33f6eb00 0003b008 bef01cac 0000017b 00000000 0003b008 0000000b 0003b008 [ 62.885210] 7fe0: bef01ae0 bef01ad0 0001dc23 b6e8c162 800b0070 00000003 c0c0c0c0 c0c0c0c0 [ 62.893380] [<c01277c0>] (kernfs_find_ns) from [<c0824888>] (pm_qos_latency_tolerance_attr_group+0x0/0x10) [ 62.903005] Code: e28dd00c e8bd80f0 e92d41f0 e2923000 (e1d0e4b4) [ 62.909115] ---[ end trace 02fb4373ef095c7b ]--- Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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