- 02 Mar, 2010 40 commits
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Alan Stern authored
This patch (as1327) changes the way negative autosuspend delays prevent device from autosuspending. The current code checks for negative values explicitly in the autosuspend_check() routine. The updated code keeps things from getting that far by using usb_autoresume_device() to increment the usage counter when a negative delay is set, and by using usb_autosuspend_device() to decrement the usage counter when a non-negative delay is set. This complicates the set_autosuspend() attribute method code slightly, but it will reduce the overall power management overhead. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Stern authored
This patch (as1326) adds usb_enable_autosuspend() and usb_disable_autosuspend() routines for use by drivers. If a driver knows that its device can handle suspends and resumes correctly, it can enable autosuspend all by itself. This is equivalent to the user writing "auto" to the device's power/level attribute. The implementation differs slightly from what it used to be. Now autosuspend is disabled simply by doing usb_autoresume_device() (to increment the usage counter) and enabled by doing usb_autosuspend_device() (to decrement the usage counter). The set_level() attribute method is updated to use the new routines, and the USB Power-Management documentation is updated. The patch adds a usb_enable_autosuspend() call to the hub driver's probe routine, allowing the special-case code for hubs in quirks.c to be removed. Signed-off-by:
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Alan Stern authored
This patch (as1325) changes the locking for the persist_enabled flag in struct usb_device. Now it is protected by the device lock, along with all its neighboring bit flags, instead of the PM lock (which is about to vanish anyway). Signed-off-by:
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Alan Stern authored
This patch (as1324) makes a small change to the code used for remote wakeup of root hubs. hcd_resume_work() now calls the hub driver's remote-wakeup routine instead of implementing its own version. The patch is complicated by the need to rename remote_wakeup() to usb_remote_wakeup(), make it non-static, and declare it in a header file. There's also the additional complication required to make everything work when CONFIG_PM isn't set; the do-nothing inline routine had to be moved into the header file. Signed-off-by:
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Alan Stern authored
This patch (as1323) changes the locking requirements for usb_autosuspend_device(), usb_autoresume_device(), and usb_try_autosuspend_device(). This isn't a very important change; mainly it's meant to make the locking more uniform. The most tricky part of the patch involves changes to usbdev_open(). To avoid an ABBA locking problem, it was necessary to reduce the region protected by usbfs_mutex. Since that mutex now protects only against simultaneous open and remove, this posed no difficulty -- its scope was larger than necessary. And it turns out that usbfs_mutex is no longer needed in usbdev_release() at all. The list of usbfs "ps" structures is now protected by the device lock instead of by usbfs_mutex. Signed-off-by:
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Alan Stern authored
This patch (as1322) reverses the two outcomes of an "if" statement in usb_probe_interface(), to avoid an unnecessary level of indentation. Signed-off-by:
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Sarah Sharp authored
USB devices do not have to sort interfaces in their descriptors based on the interface number, and they may choose to skip interface numbers. The USB bandwidth allocation code for installing a new configuration assumes the for loop variable will match the interface number. Make it use the interface number (bInterfaceNumber) in the descriptor instead. Signed-off-by:
Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by:
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Jan Dumon authored
Enable the SD-Card interface on multiple Option 3G sticks. The unusual_devs.h entry is necessary because the device descriptor is vendor-specific. That prevents usb-storage from binding to it as an interface driver. Signed-off-by:
Jan Dumon <j.dumon@option.com> Signed-off-by:
Phil Dibowitz <phil@ipom.com> Cc: stable <stable@kernel.org> Signed-off-by:
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Felipe Balbi authored
trivial patch enabling g_nokia on rx51_defconfig. Signed-off-by:
Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by:
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Felipe Balbi authored
g_nokia is the gadget driver implementing WMCDC Wireless Handset Control Model for the N900 device. Signed-off-by:
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Sarah Sharp authored
Randy Dunlap reported this error when compiling the xHCI driver: linux-next-20100104/drivers/usb/host/xhci.h:1214: sorry, unimplemented: inlining failed in call to 'xhci_get_slot_state': function body not available The xhci_get_slot_state() function belongs in xhci-dbg.c, since it involves debugging internal xHCI structures. However, it is only used in xhci-hcd.c. Some toolchains may have issues since the inlined function body is not in the xhci.h header file. Remove the inline keyword to avoid this. Reported-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Thiago Farina authored
Signed-off-by:
Thiago Farina <tfransosi@gmail.com> Signed-off-by:
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Julia Lawall authored
urb_priv->tds has type struct td **, not struct td *, so the elements of the array should have pointer type, not structure type. Convert kzalloc to kcalloc as well. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @disable sizeof_type_expr@ type T; T **x; @@ x = <+...sizeof( - T + *x )...+> // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Signed-off-by:
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Johan Hovold authored
Cc: Lonnie Mendez <dignome@gmail.com> Signed-off-by:
Johan Hovold <jhovold@gmail.com> Signed-off-by:
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Johan Hovold authored
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Dan Carpenter authored
The original code was passing a stack variable as a dma buffer, so I made it an allocated variable. Instead of adding a bunch of kfree() calls, I changed all the error return paths to gotos. Also I noticed that the error checking wasn't correct because usb_get_descriptor() can return negative values. While I was at it, I made an unrelated white space change by moving the unicode_to_ascii() on to one line. Signed-off-by:
Dan Carpenter <error27@gmail.com> Cc: Johan Hovold <jhovold@gmail.com> Signed-off-by:
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Johan Hovold authored
Kill string that is allocated and generated using speed and parity settings but is never used (and never has been). Signed-off-by:
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Johan Hovold authored
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Johan Hovold authored
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Johan Hovold authored
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Johan Hovold authored
Change data-argument type from (void *) to (u8 *) to prevent endianess problems. Signed-off-by:
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Johan Hovold authored
Cc: Oliver Neukum <oliver@neukum.name> Signed-off-by:
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Johan Hovold authored
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Johan Hovold authored
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Johan Hovold authored
Cc: Lonnie Mendez <dignome@gmail.com> Signed-off-by:
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Johan Hovold authored
Cc: Lonnie Mendez <dignome@gmail.com> Signed-off-by:
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Johan Hovold authored
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Johan Hovold authored
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Johan Hovold authored
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Ajay Kumar Gupta authored
OMAP3 has three HS USB ports so it can have three different regulator for each PHY connected to each port. Currently these regulators are assumed to be optional and driver doesn't fail but continue with the initialization if it doesn't get any regulators. Regulator supply names has to be mapped in board files as 'hsusbN' where 'N' is port number and can be {0, 1 ,2}. Signed-off-by:Ajay Kumar Gupta <ajay.gupta@ti.com> Signed-off-by:
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Ajay Kumar Gupta authored
Added missing kfree() in ehci_hcd_omap_remove(). Signed-off-by:
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Ajay Kumar Gupta authored
Some of the board might use external Vbus power supply on musb interface which would require to program ULPI_BUSCONTROL register. Adding 'extvbus' flag which can be set from such boards which will be checked at musb driver files before programming ULPI_BUSCONTROL. Signed-off-by:
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Ajay Kumar Gupta authored
Save dynamic FIFO read only information for later uses during musb_save/restore_context functions. Signed-off-by:
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Arnaud Mandy authored
MUSB's programming guide dictates how we should handle its irqs and in which order. Follow that. Signed-off-by:
Arnaud Mandy <ext-arnaud.2.mandy@nokia.com> Signed-off-by:
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Bryan Wu authored
The version applied had a few comments which are now done. Thanks to Sergei for pointing out. 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> Signed-off-by:
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Swaminathan S authored
This patch fixes the Tx abort/teardown logic. We now wait for the teardown completion interrupt and acknowledge the same by setting the tx_complete register to 0. This change is needed to ensure that abort processing works on DM365 platform. Without this change after completion of abort processing the system is overwhelmed with continuous stream of abort interrupts. This change has been tested on all CPPI3.x platforms (DM644x, DM646x, DM35x, DM36x). Signed-off-by:
Swaminathan S <swami.iyer@ti.com> Signed-off-by:
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Swaminathan S authored
This patch implements the work around for a Mentor controller related bug where it's observed a BULK Tx toggle error on the bus when a BULK IO gets scheduled on an endpoint that was earlier used for handling ISOC transaction and needed to start on 1 toggle. When such a situation arises even if the TXCSR toggle bits are programmed correctly by the musb driver the data gets transmitted with 0 toggle which leads to toggle error on the bus and the BULK transaction fails. In case of MSC write, the device gets reset by the Host. This Mentor bug is observed on almost all Mentor versions (1.3, 1.5, 1.8). Confirmed on DM644x, DM355, DM365, OMAPL13x platforms. Signed-off-by:
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Anand Gadiyar authored
MUSB DMA_INTR register may sometimes read zero when infact there was a pending interrupt. Workaround this by reading the DMA_COUNT values for all enabled channels when this condition occurs. Flag these channels as the ones needing to be serviced. Additionally, the absence of a debug print meant we would never catch a spurious DMA interrupt in MUSB. So this patch adds a debug print in the IRQ handler. Signed-off-by:
Anand Gadiyar <gadiyar@ti.com> Cc: Ajay Kumar Gupta <ajay.gupta@ti.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by:
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Anand Gadiyar authored
Add a wrapper for reading the DMA count register, analogous to the one for writing to this register. Signed-off-by:
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Ajay Kumar Gupta authored
We have observed MSC data read corruption when USB LAN device is also connected and it's interface is up. Silicon team has confirmed an errata where in all the active transfers should use FIFO space either in first 8K or next 8K. So far we have observed the issue in above use case scenario. As a workaround to it, adding a new FIFO config (5) fitting well within first 8K which can be used for such use cases. Signed-off-by:
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