user/sven/linux.git, branch v4.9.180

Linux 4.9.180

2019-05-31T13:48:32Z

drm: Wake up next in drm_read() chain if we are forced to putback the event

2019-05-31T13:48:31Z

[ Upstream commit 60b801999c48b6c1dd04e653a38e2e613664264e ] After an event is sent, we try to copy it into the user buffer of the first waiter in drm_read() and if the user buffer doesn't have enough room we put it back onto the list. However, we didn't wake up any subsequent waiter, so that event may sit on the list until either a new vblank event is sent or a new waiter appears. Rare, but in the worst case may lead to a stuck process. Testcase: igt/drm_read/short-buffer-wakeup Signed-off-by: Chris Wilson Cc: Daniel Vetter Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20170804082328.17173-1-chris@chris-wilson.co.uk Signed-off-by: Sasha Levin

ASoC: davinci-mcasp: Fix clang warning without CONFIG_PM

2019-05-31T13:48:31Z

[ Upstream commit 8ca5104715cfd14254ea5aecc390ae583b707607 ] Building with clang shows a variable that is only used by the suspend/resume functions but defined outside of their #ifdef block: sound/soc/ti/davinci-mcasp.c:48:12: error: variable 'context_regs' is not needed and will not be emitted We commonly fix these by marking the PM functions as __maybe_unused, but here that would grow the davinci_mcasp structure, so instead add another #ifdef here. Fixes: 1cc0c054f380 ("ASoC: davinci-mcasp: Convert the context save/restore to use array") Signed-off-by: Arnd Bergmann Acked-by: Peter Ujfalusi Reviewed-by: Nathan Chancellor Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi: Fix zero length xfer bug

2019-05-31T13:48:31Z

[ Upstream commit 5442dcaa0d90fc376bdfc179a018931a8f43dea4 ] This fixes a bug for messages containing both zero length and unidirectional xfers. The function spi_map_msg will allocate dummy tx and/or rx buffers for use with unidirectional transfers when the hardware can only do a bidirectional transfer. That dummy buffer will be used in place of a NULL buffer even when the xfer length is 0. Then in the function __spi_map_msg, if he hardware can dma, the zero length xfer will have spi_map_buf called on the dummy buffer. Eventually, __sg_alloc_table is called and returns -EINVAL because nents == 0. This fix prevents the error by not using the dummy buffer when the xfer length is zero. Signed-off-by: Chris Lesiak Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi: rspi: Fix sequencer reset during initialization

2019-05-31T13:48:31Z

[ Upstream commit 26843bb128590edd7eba1ad7ce22e4b9f1066ce3 ] While the sequencer is reset after each SPI message since commit 880c6d114fd79a69 ("spi: rspi: Add support for Quad and Dual SPI Transfers on QSPI"), it was never reset for the first message, thus relying on reset state or bootloader settings. Fix this by initializing it explicitly during configuration. Fixes: 0b2182ddac4b8837 ("spi: add support for Renesas RSPI") Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

spi : spi-topcliff-pch: Fix to handle empty DMA buffers

2019-05-31T13:48:31Z

[ Upstream commit f37d8e67f39e6d3eaf4cc5471e8a3d21209843c6 ] pch_alloc_dma_buf allocated tx, rx DMA buffers which can fail. Further, these buffers are used without a check. The patch checks for these failures and sends the error upstream. Signed-off-by: Aditya Pakki Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

scsi: lpfc: Fix SLI3 commands being issued on SLI4 devices

2019-05-31T13:48:31Z

[ Upstream commit c95a3b4b0fb8d351e2329a96f87c4fc96a149505 ] During debug, it was seen that the driver is issuing commands specific to SLI3 on SLI4 devices. Although the adapter correctly rejected the command, this should not be done. Revise the code to stop sending these commands on a SLI4 adapter. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

media: saa7146: avoid high stack usage with clang

2019-05-31T13:48:31Z

[ Upstream commit 03aa4f191a36f33fce015387f84efa0eee94408e ] Two saa7146/hexium files contain a construct that causes a warning when built with clang: drivers/media/pci/saa7146/hexium_orion.c:210:12: error: stack frame size of 2272 bytes in function 'hexium_probe' [-Werror,-Wframe-larger-than=] static int hexium_probe(struct saa7146_dev *dev) ^ drivers/media/pci/saa7146/hexium_gemini.c:257:12: error: stack frame size of 2304 bytes in function 'hexium_attach' [-Werror,-Wframe-larger-than=] static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info) ^ This one happens regardless of KASAN, and the problem is that a constructor to initialize a dynamically allocated structure leads to a copy of that structure on the stack, whereas gcc initializes it in place. Link: https://bugs.llvm.org/show_bug.cgi?id=40776 Signed-off-by: Arnd Bergmann Reviewed-by: Nick Desaulniers Signed-off-by: Hans Verkuil [hverkuil-cisco@xs4all.nl: fix checkpatch warnings] Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin

scsi: lpfc: Fix FDMI manufacturer attribute value

2019-05-31T13:48:31Z

[ Upstream commit d67f935b79a76ac9d86dde1a27bdd413feb5d987 ] The FDMI manufacturer value being reported on Linux is inconsistent with other OS's. Set the value to "Emulex Corporation" for consistency. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

media: go7007: avoid clang frame overflow warning with KASAN

2019-05-31T13:48:30Z

[ Upstream commit ed713a4a1367aca5c0f2f329579465db00c17995 ] clang-8 warns about one function here when KASAN is enabled, even without the 'asan-stack' option: drivers/media/usb/go7007/go7007-fw.c:1551:5: warning: stack frame size of 2656 bytes in function I have reported this issue in the llvm bugzilla, but to make it work with the clang-8 release, a small annotation is still needed. Link: https://bugs.llvm.org/show_bug.cgi?id=38809 Signed-off-by: Arnd Bergmann Signed-off-by: Hans Verkuil [hverkuil-cisco@xs4all.nl: fix checkpatch warning] Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin