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* USB: gadget: s3c: get rid of debug compile warningBo Shen2014-09-02-8/+8
| | | | | | | | | | When enable debug option to compile, it will give the following warning, this patch is used to get rid of it. --->8--- warning: 'flags' is used uninitialized in this function [-Wuninitialized] ---8<--- Signed-off-by: Bo Shen <voice.shen@atmel.com>
* USB: gadget: atmel: get rid of debug compile warningBo Shen2014-09-02-6/+6
| | | | | | | | | | When enable debug option to compile, it will give the following warning, this patch is used to get rid of it. --->8--- warning: 'flags' is used uninitialized in this function [-Wuninitialized] ---8<--- Signed-off-by: Bo Shen <voice.shen@atmel.com>
* usb: ci_udc: implement dfu_usb_get_resetStephen Warren2014-09-02-0/+7
| | | | | | | | This allows the USB code to determine whether a USB bus reset was issued, which in turn allows the code to differentiate between a detach (return to shell prompt) and a board reset/reboot request. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* udc: dfu: s3c_udc: Provide function to check if USB reset was assertedLukasz Majewski2014-09-02-0/+5
| | | | | | | | | | | New dfu_usb_get_reset() method is necessary to distinct two different use cases of dfu-util program. This method checks if the USB bus reset has been really performed after DFU DETACH. Without this function the previous DFU behavior is preserved. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
* dfu: Provide means to find difference between dfu-util -e and -RLukasz Majewski2014-09-02-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit provides distinction between DFU device detach and reset. The -R behavior is preserved with proper handling of the dfu-util's -e switch, which detach the DFU device. By running dfu-util -e; one can force device to finish the execution of dfu command on target and execute some other scripted commands. Moreover, some naming has been changed - the dfu_reset() method now is known as dfu_detach(). New name better reflects the purpose of the code. It was also necessary to increase the number of usb_gadget_handle_interrupts() calls since we also must wait for detection of the USB reset event. Example usage: 1. -e (detach) switch dfu-util -a0 -D file1.bin;dfu-util -a3 -D uImage;dfu-util -e access to u-boot prompt. 2. -R (reset) switch dfu-util -a0 -D file1.bin;dfu-util -R -a3 -D uImage target board reset Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
* Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini2014-08-28-0/+202
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| * sunxi: add USB EHCI driverRoman Byshko2014-07-31-0/+202
| | | | | | | | | | | | | | | | | | The Allwinner aka sunxi SoCs have one or more USB host controllers. This adds a driver for their EHCI. Signed-off-by: Roman Byshko <rbyshko@gmail.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* | lib, linux: move linux specific defines to linux/compat.hHeiko Schocher2014-08-25-68/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - move linux specific defines from usb and video code into linux/compat.h - move common linux specific defines from include/ubi_uboot.h to linux/compat.h - add for new mtd/ubi/ubifs sync new needed linux specific defines to linux/compat.h Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Anatolij Gustschin <agust@denx.de> [trini: Add spin_lock_irqsave/spin_unlock_irqrestore dummies from usb/lin_gadet_compat.h] Signed-off-by: Tom Rini <trini@ti.com>
* | omap: remove omap5912osk board supportMasahiro Yamada2014-08-21-1507/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Emails to the board maintainer "Rishi Bhattacharya <rishi@ti.com>" have been bouncing. Tom suggested to remove this board. Remove also omap1510_udc.c because this is the last board to enable it. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Suggested-by: Tom Rini <trini@ti.com>
* | omap: clean-up dead configsMasahiro Yamada2014-08-09-50/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The following configs are not defined at all. - CONFIG_OMAP1510 - CONFIG_OMAP_1510P1 - CONFIG_OMAP_SX1 - CONFIG_OMAP3_DMA - CONFIG_OMAP3_ZOOM2 - CONFIG_OMAP_INNOVATOR Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com>
* | usb: ehci: rmobile: Remove xHCI addressNobuhiro Iwamatsu2014-08-09-3/+0
| | | | | | | | | | | | | | | | echi-rmobile does not support xHCI. This removes xHCI address from address table. And this revise a value of CONFIG_USB_MAX_CONTROLLER_COUNT for lager board and koelsh board. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
* | usb: ehci: rmobile: Add support R8A7794Nobuhiro Iwamatsu2014-08-09-0/+6
| | | | | | | | | | | | | | R8A7794 has same IP of USB controller as R8A7790 and R8A7791. This addes support for R8A7794. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
* | dfu: allow backend to specify a maximum buffer sizeStephen Warren2014-08-09-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | CONFIG_SYS_DFU_DATA_BUF_SIZE may be large to allow for FAT/ext layouts to transfer large files. However, this means that individual write operations will take a long time. Allow backends to specify a maximum buffer size, so that each write operation is limited to a smaller data block. This prevents the DFU protocol from timing out when e.g. writing to SPI flash. I would guess that NAND might benefit from setting this value too, but I can't test that. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* | dfu: add write error handlingStephen Warren2014-08-09-4/+16
|/ | | | | | | | | | | | | | | | | | | | | | | | | | Fix calls to dfu_write() and dfu_flush() to detect errors in the I/O itself. This could happen due to problems with the storage medium, or simply when trying to write a FAT/ext file that is larger than the buffer dfu_mmc.c maintains for this purpose. Signal the error by switching the DFU state/status. This will be picked up by the DFU client when it sends the next DFU request. Note that errors can't simply be returned from e.g. dnload_request_complete(), since that function has no way to pass errors back to the DFU client; a call to dnload_request_complete() simply means that a USB OUT completed. This error state/status needs to be cleared when the next DFU client connects. While there is a DFU_CLRSTATUS request, no DFU client seems to send this. Hence, clear this when selecting the USB alternate setting on the USB interface. Finally, dfu.c relies on a call to dfu_flush() to clear up the internal state of the write transaction. Now that errors in dfu_write() are detected, dfu_flush() may no longer be called for every transaction. Separate out the cleanup code into a new function, and call it whenever dfu_write() fails, as well as from any call to dfu_flush(). Signed-off-by: Stephen Warren <swarren@nvidia.com>
* driver/usb: include upper/lower_32_bits() from linux/compat.hLijun Pan2014-07-22-4/+2
| | | | | | | upper_32_bits() and lower_32_bits() have been ported into linux/compat.h. Start use them now in drivers/usb/host/xhci.h. Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
* usb: phy: omap_usb_phy: implement usb_phy_power() for AM437xFelipe Balbi2014-07-09-1/+16
| | | | | | | | Newer AM437x silicon requires us to explicitly power up the USB2 PHY. By implementing usb_phy_power() we can achieve that. Signed-off-by: Felipe Balbi <balbi@ti.com>
* usb: host: xhci: make sure to power up PHYFelipe Balbi2014-07-09-0/+1
| | | | | | | some boards won't work if the PHY isn't explicitly powered up. Signed-off-by: Felipe Balbi <balbi@ti.com>
* arm: ep9315: Return back Cirrus Logic EDB9315A board supportSergey Kostanbaev2014-07-04-0/+39
| | | | | | | This patch returns back support for old ep93xx processors family Signed-off-by: Sergey Kostanbaev <sergey.kostanbaev@gmail.com> Cc: albert.u.boot@aribaud.net
* usb: ci_udc: use var name ep/ci_ep consistentlyStephen Warren2014-07-02-9/+9
| | | | | | | | | Almost all of ci_udc.c uses variable name "ep" for a struct usb_ep and "ci_ep" for a struct ci_ep. This is nice and consistent, and helps people know what type a variable is without searching for the declaration. handle_ep_complete() doesn't do this, so fix it to be consistent. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* USB: gadget: atmel: zero out allocated requestsStephen Warren2014-07-02-1/+1
| | | | | | | | | | | A UDC's alloc_request method should zero out the newly allocated request. Ensure the Atmel driver does so. This issue was found by code inspection, following the investigation of an intermittent issue with ci_udc, which was tracked down to failing to zero out allocated requests following some of my changes. All other UDC drivers already zero out requests in one way or another. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: don't memalign() struct ci_req allocationsStephen Warren2014-07-02-2/+1
| | | | | | | | | | struct ci_req is a purely software structure, and needs no specific memory alignment. Hence, allocate it with calloc() rather than memalign(). The use of memalign() was left-over from when struct ci_req was going to hold the aligned bounce buffer, but this is now dynamically allocated. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: remove controller.items arrayStephen Warren2014-07-02-6/+3
| | | | | | | | There's no need to store an array of QTD pointers in the controller. Since the calculation is so simple, just have ci_get_qtd() perform it at run-time, rather than pre-calculating everything. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: fix items array size/stride calculationStephen Warren2014-07-02-15/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | 2 QTDs are allocated for each EP. The current allocation scheme aligns the first QTD in each pair, but simply adds the struct size to calculate the second QTD's address. This will result in a non-cache-aligned addresss IF the system's ARCH_DMA_MINALIGN is not 32 bytes (i.e. the size of struct ept_queue_item). Similarly, the original ilist_ent_sz calculation aligned the value to ARCH_DMA_MINALIGN but didn't take the USB HW's 32-byte alignment requirement into account. This doesn't cause a practical issue unless ARCH_DMA_MINALIGN < 32 (which I suspect is quite unlikely), but we may as well fix the code to be explicit, so it's obviously completely correct. The new value of ILIST_ENT_SZ takes all alignment requirements into account, so we can simplify ci_{flush,invalidate}_qtd() by simply using that macro rather than calling roundup(). Similarly, the calculation of controller.items[i] can be simplified, since each QTD is evenly spaced at its individual alignment requirement, rather than each pair being aligned, and entries within the pair being spaced apart only by structure size. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: lift ilist size calculations to global scopeStephen Warren2014-07-02-14/+14
| | | | | | | | | | | | This will allow functions other than ci_udc_probe() to make use of the constants in a future change. This in turn requires converting the const int variables to #defines, since the initialization of one global const int can't depend on the value of another const int; the compiler thinks it's non-constant if that dependency exists. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: don't assume QTDs are adjacent when transmitting ZLPsStephen Warren2014-07-02-3/+4
| | | | | | | | | Fix ci_ep_submit_next_request()'s ZLP transmission code to explicitly call ci_get_qtd() to find the address of the other QTD to use. This will allow us to correctly align each QTD individually in the future, which may involve leaving a gap between the QTDs. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: fix ci_flush_{qh,qtd} calls in ci_udc_probe()Stephen Warren2014-07-02-2/+2
| | | | | | | | | | | | | | | ci_udc_probe() initializes a pair of QHs and QTDs for each EP. After each pair has been initialized, the pair is cache-flushed. The conversion from QH/QTD index [0..2*NUM_END_POINTS) to EP index [0..NUM_ENDPOINTS] is incorrect; it simply subtracts 1 (which yields the QH/QTD index of the first entry in the pair) rather than dividing by two (which scales the range). Fix this. On my system, this avoids cache debug prints due to requests to flush unaligned ranges. This is caused because the flush calls happen before the items[] array entries are initialized for all but EP0. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: eth: smsc95xx: add LAN9500A device IDIlya Ledvich2014-06-25-0/+1
| | | | | | | | Add LAN9500A product ID (0x9e00) in order to support LAN9500A based dongles. Tested on cm_t335. Signed-off-by: Ilya Ledvich <ilya@compulab.co.il> Acked-by: Marek Vasut <marex@denx.de>
* usb: fastboot: fix potential buffer overflowJeroen Hofstee2014-06-25-4/+7
| | | | | | | | | | | cb_getvar tries to prevent overflowing the response buffer by using strncat. But strncat takes the number of data bytes copied as a limit not the total buffer length so it can still overflow. Pass the correct value instead. cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> cc: Rob Herring <robh@kernel.org> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* usb: xhci: (likely) fix bracket in if conditionJeroen Hofstee2014-06-25-2/+2
| | | | | | | | | Because of the brackets the & and && is evaluated before the comparison. This is likely not the intention. Change it to test the first and second condition to both be true. cc: Marek Vasut <marex@denx.de> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* usb:g_dnl:f_thor: remove memset before memcpyJeroen Hofstee2014-06-25-1/+0
| | | | | | | | | | | | since ALLOC_CACHE_ALIGN_BUFFER defines a pointer and not a buffer, the memset with sizeof(rqt) likely does something else then intended. Since there is a memcpy directly after it with the full size, drop the memset completely. Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: Marek Vasut <marex@denx.de> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl> Acked-by: Lukasz Majewski <l.majewski@samsung.com>
* usb:composite: clear the whole common bufferJeroen Hofstee2014-06-25-2/+2
| | | | | | | | | | | | | Since the struct fsg_common is calloced, reset it completely with zero's when reused. While at it, make checkpatch happy. cc: Lukasz Majewski <l.majewski@samsung.com> cc: Piotr Wilczek <p.wilczek@samsung.com> cc: Kyungmin Park <kyungmin.park@samsung.com> cc: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Lukasz Majewski <l.majewski@samsung.com>
* usb: r8a66597: Fix initilization size of r8a66597 info structureYasuhisa Umano2014-06-25-1/+1
| | | | | | | | Initialization of r8a66597 info structure is not enough. Because initilization was used size of pointer. This fixes that use size of r8a6659 info structure. Signed-off-by: Yasuhisa Umano <yasuhisa.umano.zc@renesas.com>
* usb: r8a66597: Fix initialization hub that using R8A66597_MAX_ROOT_HUByasuhisa umano2014-06-25-2/+2
| | | | | | | | | This driver is processed as two USB hub despite one. The number of root hub is defined in R8A66597_MAX_ROOT_HUB. This fixes that register is accessed by using the definition of R8A66597_MAX_ROOT_HUB. Signed-off-by: Yasuhisa Umano <yasuhisa.umano.zc@renesas.com>
* usb: cosmetic: double constJeroen Hofstee2014-06-25-2/+2
| | | | | | | | | For plain array const can be either before or after the type definition. Adding both is simply redundand. Remove the later one. cc: marex@denx.de Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* usb: ci_udc: fix typo in debug messageStephen Warren2014-06-25-2/+2
| | | | | | s/ot/to/ Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: fix interaction with CONFIG_USB_ETH_CDCStephen Warren2014-06-25-1/+7
| | | | | | | | | | | | | | | | | | | | | | ci_udc.c's usb_gadget_unregister_driver() doesn't call driver->unbind() unlike other USB gadget drivers. Fix it to do this. Without this, when ether.c's CDC Ethernet device is torn down, eth_unbind() is never called, so dev->gadget is never set to NULL. For some reason, usb_eth_halt() is called both at the end of the first use of the Ethernet device, and prior to any subsequent use. Since dev->gadget is never cleared, all calls to usb_eth_halt() attempt to stop, disconnect, and clean up the device, resulting in double cleanup, which hangs U-Boot on my Tegra device at least. ci_udc allocates its own singleton EP0 request object, and cleans it up during usb_gadget_unregister_driver(). This appears necessary when using the USB gadget framework in U-Boot, since that does not allocate/free the EP0 request. However, the CDC Ethernet driver *does* allocate and free its own EP0 requests. Consequently, we must protect ci_ep_free_request() against double-freeing the request. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: terminate ep0 INs with a zlp when requiredStephen Warren2014-06-11-3/+35
| | | | | | | | | Sometimes, a zero-length packet is required at the end of an IN transaction so that the host knows the device is done sending data. Enhance ci_udc to send a zlp when necessary. See the comments for more details. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: clean up all allocations in unregisterStephen Warren2014-06-11-0/+6
| | | | | | | | | usb_gadget_unregister_driver() is called to tear down the USB device mode stack. Fix the driver to stop the USB HW (which causes any attached host to notice the disappearance of the device), and free all allocations (which obviously prevents memory leaks). Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: fix probe error cleanupStephen Warren2014-06-11-0/+1
| | | | | | | If allocation of the ep0 req fails, clean up all the allocations that were made in ci_udc_probe(). Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: fix freeing of ep0 reqStephen Warren2014-06-11-2/+7
| | | | | | | | | | | ci_ep_alloc_request() avoids allocating multiple request objects for ep0 by keeping a record of the first req allocated for ep0, and always returning that instead of allocating a new req. However, if this req is ever freed, the record of the previous allocation is not cleared, so ci_ep_alloc_request() will keep returning this stale pointer. Fix ci_ep_free_request() to clear the record of the previous allocation. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: call udc_disconnect() from ci_pullup()Stephen Warren2014-06-11-16/+12
| | | | | | | ci_pullup()'s !is_on path contains a cut/paste copy of udc_disconnect(). Remove the duplication by simply calling udc_disconnect() instead. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: complete ep0 direction handlingStephen Warren2014-06-01-7/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | handle_setup() currently assumes that the response to a Setup transaction will be an OUT transaction, and any subsequent packet (if any) will be an IN transaction. This appears to be valid in many cases; both USB enumeration and Mass Storage work OK with this restriction. However, DFU uses ep0 to transfer data in both directions. This renders the assumption invalid; when sending data from device to host, the Data Stage is an IN transaction, and the Status Stage is an OUT transaction. Enhance handle_setup() to deduce the correct direction for the USB transactions based on Setup transaction data. ep0's request object only needs to be automatically re-queued when the Data Stage completes, in order to implement the Status Stage. Once the Status Stage transaction is complete, there is no need to re-queue the USB request, so don't do that. Don't sent USB request completion callbacks for Status Stage transactions. These were queued by ci_udc itself, and only serve to confuse the USB function code. For example, f_dfu attempts to interpret the 0-length data buffers for Status Stage transactions as DFU packets. These buffers contain stale data from the previous transaction. This causes f_dfu to complain about a sequence number mismatch. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: pre-allocate ep0 reqStephen Warren2014-06-01-1/+17
| | | | | | | | | | | | | | | | | | | | Allocate ep0's USB request object when the UDC driver is probed. This solves a couple of issues in the current code: a) A request object always exists for ep0. Prior to this patch, if setup transactions arrived in an unexpected order, handle_setup() would need to reply to a setup transaction before any ep0 usb_req was created. This issue was introduced in commit 2813006fecda "usb: ci_udc: allow multiple buffer allocs per ep." b) handle_ep_complete no longer /has/ to queue the ep0 request again after every single request completion. This is currently required, since handle_setup() assumes it can find some request object in ep0's request queue. This patch doesn't actually stop handle_ep_complete() from always requeueing the request, but the next patch will. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: use a single descriptor for ep0Stephen Warren2014-06-01-11/+4
| | | | | | | | | ci_udc currently points ep->desc at separate descriptors for IN and OUT. These descriptors only differ in the ep address IN/OUT field. Modify the code to use a single descriptor, and change that descriptor's ep address to indicate IN/OUT as required. This removes some data duplication. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* usb: ci_udc: detect queued requests on ep0Stephen Warren2014-06-01-0/+15
| | | | | | | | | | | | The flipping of ep0 between IN and OUT relies on ci_ep_queue() consuming the current IN/OUT setting immediately. If this is deferred to a later point when the req is pulled out of ci_req->queue, then the IN/OUT setting may have been changed since the req was queued, and state will get out of sync. This condition doesn't occur today, but could if bugs were introduced later, and this error-check will save a lot of debugging time. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* Merge branch 'u-boot-microblaze/zynq' into 'u-boot-arm/master'Albert ARIBAUD2014-05-23-0/+105
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| * ARM: zynq: ehci: Added USB host driver supportMichal Simek2014-05-14-0/+105
| | | | | | | | | | | | | | Added USB host driver for zynq. Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* | Merge branch 'pr-15052014' of git://git.denx.de/u-boot-usbTom Rini2014-05-22-69/+110
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| * | usb:gadget:f_thor: download_tail(): remove dfu_write with 0 sizePrzemyslaw Marczak2014-05-15-9/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since dfu_flush() can write raw data, dfu_write() with zero size can be removed from download_tail() in thor gadget. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de>
| * | usb: ci_udc: parse QTD before over-writing itStephen Warren2014-05-15-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ci_udc only allocates a single QTD structure per EP. All data needs to be extracted from the DTD prior to calling ci_ep_submit_next_request(), since that fills the QTD with next transaction's parameters. Fix handle_ep_complete() to extract the transaction (remaining) length before kicking off the next transaction. In practice, this only causes writes to UMS devices to fail for me. I may have tested the final versions of my previous ci_udc patch only with reads. More recently, I had patches applied locally that allocated a QTD per USB request rather than per USB EP, although since that doesn't give any performance benefit, I'm dropping those. Fixes: 2813006fecda ("usb: ci_udc: allow multiple buffer allocs per ep") Signed-off-by: Stephen Warren <swarren@nvidia.com>
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