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path: root/drivers/usb
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2009-12-23USB: Fix a bug on appledisplay.c regarding signednesspancho horrillo
brightness status is reported by the Apple Cinema Displays as an 'unsigned char' (u8) value, but the code used 'char' instead. Note that he driver was developed on the PowerPC architecture, where the two types are synonymous, which is not always the case. Fixed that. Otherwise the driver will interpret brightness levels > 127 as negative, and fail to load. Signed-off-by: pancho horrillo <pancho@pancho.name> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: option: support hi speed for modem Haier CE100Donny Kurnia
I made this patch for usbserial driver to add the support for EVDO modem Haier CE100. The bugs report for this is here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/490068 This patch based on these post: http://blankblondtank.wordpress.com/2009/09/04/mengoptimalkan-koneksi-modem-haier-ce-100-cdma-di-linux/ http://tantos.web.id/blogs/how-to-internet-connection-using-cdma-evdo-modem-and-karmic-koala-ubuntu-9-10 I hope this patch can help other that have the Haier C100 modem, mostly in my country, Indonesia. Signed-off-by: Donny Kurnia <donnykurnia@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: audio gadget: free alsa devices when unloadingCliff Cai
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: audio gadget: fix wTotalLength calculationCliff Cai
The wTotalLength should contain the sum of the interface and unit descriptor sizes per the Audio Device Class specification 1.0. Reported-by: Sergey Lapin <slapin@ossfans.org> Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23usb: otg: isp1301_omap: fix compile errorFelipe Balbi
commit 91c8a5a9985d5bf9c55f6f82f183f57b050b2a3a broke compilation of this driver after it introduced otg_init() as a static inline in <linux/usb/otg.h> Reported-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: workaround Blackfin FIFO anomaliesBryan Wu
Some of these workarounds are already in place, but labeled as affecting all BF52x parts. Since we have official anomaly numbers now, use those defines. And since writing to the FIFO has a similar hang issue as reading from the FIFO, implement the workaround there too when necessary. Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: Fix array index out of bounds issueMaulik Mankad
This patch fixes the below array index out of bounds issue. Buffer overflow, array index of 'aInfo' may be out of bounds. Array 'aInfo' of size 78 may use index value(s) 6..84 The data stored in 'aInfo' array exceeds the array size of 78. This patch increases the size of this array to hold the string correctly without any memory corruption. This issue was reported by Klockwork tool. Signed-off-by: Maulik Mankad <x0082077@ti.com> Cc: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: Fix null pointer dereference issueMaulik Mankad
This patch fixes the following NULL pointer dereference issue. Pointer 'request' returned from call to function 'next_request' at line 748 may be NULL and may be dereferenced at line 792. ============ Code Snippet ============ 748: request = next_request(musb_ep); 785: if (dma && (csr & MUSB_RXCSR_DMAENAB)) { csr &= ~(MUSB_RXCSR_AUTOCLEAR | MUSB_RXCSR_DMAENAB | MUSB_RXCSR_DMAMODE); musb_writew(epio, MUSB_RXCSR, MUSB_RXCSR_P_WZC_BITS | csr); 792: request->actual += musb_ep->dma->actual_len; Signed-off-by: Maulik Mankad <x0082077@ti.com> Cc: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: correct DMA address for txCliff Cai
Since a DMA transfer may need to be kicked off several times to complete, the DMA start must include the length that has already been transferred. Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: gadget_ep0: avoid SetupEnd interruptSergei Shtylyov
Gadget stalling a zero-length SETUP request results in this error message: SetupEnd came in a wrong ep0stage idle In order to avoid it, always set the CSR0.DataEnd bit after detecting a zero- length request. Add the missing '\n' to the error message itself as well... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Acked-by: Anand Gadiyar <gadiyar@ti.com> Cc: stable <stable@kernel.org> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: fix for crash in DM646x USB when (CPPI)DMA is enabledSwaminathan S
Race condition exists between the cppi_interrupt handler and davinci_interrupt handler w.r.t completing a TX IO. Since DM646x has seperate DMA and USB endpoint interrupts cppi_interrupt handler needs to hold the lock while operating on the endpoint. Update over previous patch to avoid taking the lock if already taken. Tested on DM644x, DM355 and DM646x platforms. Signed-off-by: Swaminathan S <swami.iyer@ti.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Acked-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: do not work if no gadget driver is loadedFelipe Balbi
On OTG and gadget-only configurations, we need a gadget driver in order to work properly, so avoid changing operation modes when there's no gadget driver loaded. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: gadget: set otg tranceiver to idle when registering gadgetArnaud Mandy
When registering gadget driver, the state of the transceiver must be set from undefined (no gadget) to b_idle. Module unload sets the transceiver state to undefined state. After the first load/unload pair, the reset irq will be lost. Signed-off-by: Arnaud Mandy <ext-arnaud.2.mandy@nokia.com> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: Populate the VBUS GPIO with the correct GPIO numberSwaminathan S
This fixes a null-pointer dereference bug. Signed-off-by: Swaminathan S <swami.iyer@ti.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Acked-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: fix compiling warning with min() macroCliff Cai
Current musb gadget dma code produces the warning: drivers/usb/musb/musb_gadget.c: In function 'txstate': drivers/usb/musb/musb_gadget.c:312: warning: comparison of distinct pointer types lacks a cast So switch to min_t(size_t, ...). Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb: move musb_remove to __exitFelipe Balbi
probe() already was on __init, so moving remove() to __exit. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: musb_gadget: fix kernel oops in txstate()Sergei Shtylyov
Commit 7723de7e19b744144975a09c81777ec0f14ac5b3 (USB: musb_gadget: remove pointless loop) included uncalled for (and incorrect) optimization that might cause a kernel oops in txstate() -- undo it. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: ftdi_sio: sort PID/VID entries in new ftdi_sio_ids.h headerAndreas Mohr
This is a (almost) sort-only patch to sort FTDI device product ID definitions in new ftdi_sio_ids.h header. Advantage is that new device ID submissions will now have a specific (sorted) position - less future merge conflicts. Compile-tested, based on _current_ mainline git. Minor checkpatch.pl warnings were eliminated whereever it made sense, very minor text changes. Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: ftdi_sio: isolate all device IDs to new ftdi_sio_ids.h headerAndreas Mohr
This is a strictly move-only patch to relocate all FTDI device product ID definitions to their own ftdi_sio_ids.h header (following the usual *_ids.h kernel tree convention, too), thus correcting the slightly too messy appearance (crucial driver defines were stuck somewhere in the decaying middle swamp of the huge existing header). Compile-tested, based on latest mainline git. Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB core: fix recent kernel-doc warningsRandy Dunlap
Fix new kernel-doc warnings in usb core: Warning(drivers/usb/core/usb.c:79): No description found for parameter 'config' Warning(drivers/usb/core/usb.c:79): No description found for parameter 'iface_num' Warning(drivers/usb/core/usb.c:79): No description found for parameter 'alt_num' Warning(drivers/usb/core/hcd.c:1622): No description found for parameter 'udev' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: add device ID for Apple Cinema Display 23in 2007pancho horrillo
Hi! $ lsusb -v Bus 001 Device 008: ID 05ac:921c Apple, Inc. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x05ac Apple, Inc. idProduct 0x921c bcdDevice 1.15 iManufacturer 1 iProduct 2 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 34 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 2mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 No Subclass bInterfaceProtocol 0 None iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 92 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 16 Signed-off-by: pancho horrillo <pancho@pancho.name> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: fix section mismatch in early ehci dbgpJan Beulich
Commit 917778267fbe67703ab7d5c6f0b7a05d4c3df485 removed __init from ehci_wait_for_port(), but left it in place on ehci_reset_port(), which is being called from the former function. Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: emi62: fix crash when trying to load EMI 6|2 firmwareClemens Ladisch
While converting emi62 to use request_firmware(), the driver was also changed to use the ihex helper functions. However, this broke the loading of the FPGA firmware because the code tries to access the addr field of the EOF record which works with a plain array that has an empty last record but not with the ihex helper functions where the end of the data is signaled with a NULL record pointer, resulting in: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<f80d248c>] emi62_load_firmware+0x33c/0x740 [emi62] This can be fixed by changing the loop condition to test the return value of ihex_next_binrec() directly (like in emi26.c). Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Reported-and-tested-by: Der Mickster <retroeffective@gmail.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: serial: Extra device/vendor ID for mos7840 driverBlaise Gassend
Signed-off-by: Blaise Gassend <blaise.gasend_linux@m4x.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: Fix double-linking of drivers/usb/otg when ULPI is selectedBill Gatliff
This patch corrects a problem where drivers/usb/otg is linked twice if CONFIG_USB_ULPI is selected, resulting in a build error (symbol conflict). The files in that directory are properly linked already as part of CONFIG_USB, and need not be indicated specifically for CONFIG_USB_ULPI. Signed-off-by: Bill Gatliff <bgat@billgatliff.com> Acked-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: gadget: Use ERR_PTR/IS_ERRJulia Lawall
Use ERR_PTR and IS_ERR rather than mixing integers and pointers. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression *E; @@ * E < 0 // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: fix bugs in usb_(de)authorize_deviceAlan Stern
This patch (as1315) fixes some bugs in the USB core authorization code: usb_deauthorize_device() should deallocate the device strings instead of leaking them, and it should invoke usb_destroy_configuration() (which does proper reference counting) instead of freeing the config information directly. usb_authorize_device() shouldn't change the device strings until it knows that the authorization will succeed, and it should autosuspend the device at the end (having autoresumed the device at the start). Because the device strings can be changed, the sysfs routines to display the strings must protect the string pointers by locking the device. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Inaky Perez-Gonzalez <inaky@linux.intel.com> Acked-by: David Vrabel <david.vrabel@csr.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23USB: rename usb_configure_deviceAlan Stern
This patch (as1314) renames usb_configure_device() and usb_configure_device_otg() in the hub driver. Neither name is appropriate because these routines enumerate devices, they don't configure them. That's handled by usb_choose_configuration() and usb_set_configuration(). Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23Fix usb_serial_probe() problem introduced by the recent kfifo changesStefani Seibold
The USB serial code was a new user of the kfifo API, and it was missed when porting things to the new kfifo API. Please make the write_fifo in place. Here is my patch to fix the regression and full ported version. Signed-off-by: Stefani Seibold <stefani@seibold.net> Reported-and-tested-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: rename kfifo_put... into kfifo_in... and kfifo_get... into kfifo_out...Stefani Seibold
rename kfifo_put... into kfifo_in... to prevent miss use of old non in kernel-tree drivers ditto for kfifo_get... -> kfifo_out... Improve the prototypes of kfifo_in and kfifo_out to make the kerneldoc annotations more readable. Add mini "howto porting to the new API" in kfifo.h Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: cleanup namespaceStefani Seibold
change name of __kfifo_* functions to kfifo_*, because the prefix __kfifo should be reserved for internal functions only. Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: move out spinlockStefani Seibold
Move the pointer to the spinlock out of struct kfifo. Most users in tree do not actually use a spinlock, so the few exceptions now have to call kfifo_{get,put}_locked, which takes an extra argument to a spinlock. Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: move struct kfifo in placeStefani Seibold
This is a new generic kernel FIFO implementation. The current kernel fifo API is not very widely used, because it has to many constrains. Only 17 files in the current 2.6.31-rc5 used it. FIFO's are like list's a very basic thing and a kfifo API which handles the most use case would save a lot of development time and memory resources. I think this are the reasons why kfifo is not in use: - The API is to simple, important functions are missing - A fifo can be only allocated dynamically - There is a requirement of a spinlock whether you need it or not - There is no support for data records inside a fifo So I decided to extend the kfifo in a more generic way without blowing up the API to much. The new API has the following benefits: - Generic usage: For kernel internal use and/or device driver. - Provide an API for the most use case. - Slim API: The whole API provides 25 functions. - Linux style habit. - DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros - Direct copy_to_user from the fifo and copy_from_user into the fifo. - The kfifo itself is an in place member of the using data structure, this save an indirection access and does not waste the kernel allocator. - Lockless access: if only one reader and one writer is active on the fifo, which is the common use case, no additional locking is necessary. - Remove spinlock - give the user the freedom of choice what kind of locking to use if one is required. - Ability to handle records. Three type of records are supported: - Variable length records between 0-255 bytes, with a record size field of 1 bytes. - Variable length records between 0-65535 bytes, with a record size field of 2 bytes. - Fixed size records, which no record size field. - Preserve memory resource. - Performance! - Easy to use! This patch: Since most users want to have the kfifo as part of another object, reorganize the code to allow including struct kfifo in another data structure. This requires changing the kfifo_alloc and kfifo_init prototypes so that we pass an existing kfifo pointer into them. This patch changes the implementation and all existing users. [akpm@linux-foundation.org: fix warning] Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-17Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: OMAP3: serial - fix bug introduced in mfd: twl: fix twl4030 rename for remaining driver, board files USB ehci: replace mach header with plat omap3: Allow EHCI to be built on OMAP3
2009-12-16USB ehci: replace mach header with platThomas Weber
Replace the mach/usb.h with plat/usb.h Cc: linux-usb-devel@lists.sourceforge.net Signed-off-by: Thomas Weber <weber@corscience.de> Acked-by: Felipe Balbi <felipe.balbi@nokia.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-12-16isp1362-hcd: use bitmap_find_next_zero_areaAkinobu Mita
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Lothar Wassmann <LW@KARO-electronics.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: USB: Close usb_find_interface race v3 Revert "USB: Close usb_find_interface race"
2009-12-15const: constify remaining dev_pm_opsAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15USB: Close usb_find_interface race v3Russ Dill
USB drivers that create character devices call usb_register_dev in their probe function. This associates the usb_interface device with that minor number and creates the character device and announces it to the world. However, the driver's probe function is called before the new usb_interface is added to the driver's klist_devices. This is a problem because userspace will respond to the character device creation announcement by opening the character device. The driver's open function will the call usb_find_interface to find the usb_interface associated with that minor number. usb_find_interface will walk the driver's list of devices and find the usb_interface with the matching minor number. Because the announcement happens before the usb_interface is added to the driver's klist_devices, a race condition exists. A straightforward fix is to walk the list of devices on usb_bus_type instead since the device is added to that list before the announcement occurs. bus_find_device calls get_device to bump the reference count on the found device. It is arguable that the reference count should be dropped by the caller of usb_find_interface instead of usb_find_interface, however, the current users of usb_find_interface do not expect this. The original version of this patch only matched against minor number instead of driver and minor number. This version matches against both. Signed-off-by: Russ Dill <Russ.Dill@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-15Revert "USB: Close usb_find_interface race"Greg Kroah-Hartman
This reverts commit a2582bd478c13c574d4c16ef1209d333f2a25935. It turned out to be buggy and broke USB printers from working. Cc: Russ Dill <Russ.Dill@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-13mfd: Rename all twl4030_i2c*Balaji T K
This patch renames function names like twl4030_i2c_write_u8, twl4030_i2c_read_u8 to twl_i2c_write_u8, twl_i2c_read_u8 and also common variable in twl-core.c Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-13mfd: Rename twl4030* driver files to enable re-useSantosh Shilimkar
The upcoming TWL6030 is companion chip for OMAP4 like the current TWL4030 for OMAP3. The common modules like RTC, Regulator creates opportunity to re-use the most of the code from twl4030. This patch renames few common drivers twl4030* files to twl* to enable the code re-use. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-12Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (151 commits) powerpc: Fix usage of 64-bit instruction in 32-bit altivec code MAINTAINERS: Add PowerPC patterns powerpc/pseries: Track previous CPPR values to correctly EOI interrupts powerpc/pseries: Correct pseries/dlpar.c build break without CONFIG_SMP powerpc: Make "intspec" pointers in irq_host->xlate() const powerpc/8xx: DTLB Miss cleanup powerpc/8xx: Remove DIRTY pte handling in DTLB Error. powerpc/8xx: Start using dcbX instructions in various copy routines powerpc/8xx: Restore _PAGE_WRITETHRU powerpc/8xx: Add missing Guarded setting in DTLB Error. powerpc/8xx: Fixup DAR from buggy dcbX instructions. powerpc/8xx: Tag DAR with 0x00f0 to catch buggy instructions. powerpc/8xx: Update TLB asm so it behaves as linux mm expects. powerpc/8xx: Invalidate non present TLBs powerpc/pseries: Serialize cpu hotplug operations during deactivate Vs deallocate pseries/pseries: Add code to online/offline CPUs of a DLPAR node powerpc: stop_this_cpu: remove the cpu from the online map. powerpc/pseries: Add kernel based CPU DLPAR handling sysfs/cpu: Add probe/release files powerpc/pseries: Kernel DLPAR Infrastructure ...
2009-12-11Merge branch 'compat-ioctl-merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground * 'compat-ioctl-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground: usbdevfs: move compat_ioctl handling to devio.c lp: move compat_ioctl handling into lp.c compat_ioctl: pass compat pointer directly to handlers compat_ioctl: simplify lookup table compat_ioctl: simplify calling of handlers compat_ioctl: inline all conversion handlers compat_ioctl: Remove BKL compat_ioctl: remove all VT ioctl handling
2009-12-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (58 commits) tty: split the lock up a bit further tty: Move the leader test in disassociate tty: Push the bkl down a bit in the hangup code tty: Push the lock down further into the ldisc code tty: push the BKL down into the handlers a bit tty: moxa: split open lock tty: moxa: Kill the use of lock_kernel tty: moxa: Fix modem op locking tty: moxa: Kill off the throttle method tty: moxa: Locking clean up tty: moxa: rework the locking a bit tty: moxa: Use more tty_port ops tty: isicom: fix deadlock on shutdown tty: mxser: Use the new locking rules to fix setserial properly tty: mxser: use the tty_port_open method tty: isicom: sort out the board init logic tty: isicom: switch to the new tty_port_open helper tty: tty_port: Add a kref object to the tty port tty: istallion: tty port open/close methods tty: stallion: Convert to the tty_port_open/close methods ...
2009-12-11Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (21 commits) ext3: PTR_ERR return of wrong pointer in setup_new_group_blocks() ext3: Fix data / filesystem corruption when write fails to copy data ext4: Support for 64-bit quota format ext3: Support for vfsv1 quota format quota: Implement quota format with 64-bit space and inode limits quota: Move definition of QFMT_OCFS2 to linux/quota.h ext2: fix comment in ext2_find_entry about return values ext3: Unify log messages in ext3 ext2: clear uptodate flag on super block I/O error ext2: Unify log messages in ext2 ext3: make "norecovery" an alias for "noload" ext3: Don't update the superblock in ext3_statfs() ext3: journal all modifications in ext3_xattr_set_handle ext2: Explicitly assign values to on-disk enum of filetypes quota: Fix WARN_ON in lookup_one_len const: struct quota_format_ops ubifs: remove manual O_SYNC handling afs: remove manual O_SYNC handling kill wait_on_page_writeback_range vfs: Implement proper O_SYNC semantics ...
2009-12-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (27 commits) Driver core: fix race in dev_driver_string Driver Core: Early platform driver buffer sysfs: sysfs_setattr remove unnecessary permission check. sysfs: Factor out sysfs_rename from sysfs_rename_dir and sysfs_move_dir sysfs: Propagate renames to the vfs on demand sysfs: Gut sysfs_addrm_start and sysfs_addrm_finish sysfs: In sysfs_chmod_file lazily propagate the mode change. sysfs: Implement sysfs_getattr & sysfs_permission sysfs: Nicely indent sysfs_symlink_inode_operations sysfs: Update s_iattr on link and unlink. sysfs: Fix locking and factor out sysfs_sd_setattr sysfs: Simplify iattr time assignments sysfs: Simplify sysfs_chmod_file semantics sysfs: Use dentry_ops instead of directly playing with the dcache sysfs: Rename sysfs_d_iput to sysfs_dentry_iput sysfs: Update sysfs_setxattr so it updates secdata under the sysfs_mutex debugfs: fix create mutex racy fops and private data Driver core: Don't remove kobjects in device_shutdown. firmware_class: make request_firmware_nowait more useful Driver-Core: devtmpfs - set root directory mode to 0755 ...
2009-12-11opticon: Fix resume logicAlan Cox
Opticon now takes the right mutex to check the port status but the status check is done wrongly for the modern serial code, so fix it. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11usb_serial: Kill port mutexAlan Cox
The tty port has a port mutex used for all the port related locking so we don't need the one in the USB serial layer any more. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11usb_serial: Use the shutdown() operationAlan Cox
As Alan Stern pointed out - now we have tty_port_open the shutdown method and locking allow us to whack the other bits into the full helper methods and provide a shutdown op which the tty port code will synchronize with setup for us. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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