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2020-06-19mtd: spi-nor: cadence-quadspi: Handle probe deferral while requesting DMA channelVignesh Raghavendra1-5/+13
dma_request_chan_by_mask() can throw EPROBE_DEFER if DMA provider is not yet probed. Currently driver just falls back to using PIO mode (which is less efficient) in this case. Instead return probe deferral error as is so that driver will be re probed once DMA provider is available. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-6-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Fix error path on failure to acquire reset linesVignesh Raghavendra1-4/+4
Make sure to undo the prior changes done by the driver when exiting due to failure to acquire reset lines. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-5-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Don't initialize rx_dma_complete on failureVignesh Raghavendra1-0/+1
If driver fails to acquire DMA channel then don't initialize rx_dma_complete struct as it won't be used. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-4-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Provide a way to disable DAC modeVignesh Raghavendra1-1/+4
Currently direct access mode is used on platforms that have AHB window (memory mapped window) larger than flash size. This feature is limited to TI platforms as non TI platforms have < 1MB of AHB window. Therefore introduce a driver quirk to disable DAC mode and set it for non TI compatibles. This is in preparation to move to spi-mem framework where flash geometry cannot be known. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-3-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-19mtd: spi-nor: cadence-quadspi: Make driver independent of flash geometryVignesh Raghavendra1-35/+1
Drop configuration of Flash size, erase size and page size configuration. Flash size is needed only if using AHB decoder (BIT 23 of CONFIG_REG) which is not used by the driver. Erase size and page size are needed if IP is configured to send WREN automatically. But since SPI NOR layer takes care of sending WREN, there is no need to configure these fields either. Therefore drop these in preparation to move the driver to spi-mem framework where flash geometry is not visible to controller driver. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20200601070444.16923-2-vigneshr@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-14Linux 5.8-rc1Linus Torvalds1-2/+2
2020-06-14security: Add LSM hooks to set*gid syscallsThomas Cedeno5-1/+40
The SafeSetID LSM uses the security_task_fix_setuid hook to filter set*uid() syscalls according to its configured security policy. In preparation for adding analagous support in the LSM for set*gid() syscalls, we add the requisite hook here. Tested by putting print statements in the security_task_fix_setgid hook and seeing them get hit during kernel boot. Signed-off-by: Thomas Cedeno <thomascedeno@google.com> Signed-off-by: Micah Morton <mortonm@chromium.org>
2020-06-14Revert "btrfs: switch to iomap_dio_rw() for dio"David Sterba4-166/+169
This reverts commit a43a67a2d715540c1368b9501a22b0373b5874c0. This patch reverts the main part of switching direct io implementation to iomap infrastructure. There's a problem in invalidate page that couldn't be solved as regression in this development cycle. The problem occurs when buffered and direct io are mixed, and the ranges overlap. Although this is not recommended, filesystems implement measures or fallbacks to make it somehow work. In this case, fallback to buffered IO would be an option for btrfs (this already happens when direct io is done on compressed data), but the change would be needed in the iomap code, bringing new semantics to other filesystems. Another problem arises when again the buffered and direct ios are mixed, invalidation fails, then -EIO is set on the mapping and fsync will fail, though there's no real error. There have been discussions how to fix that, but revert seems to be the least intrusive option. Link: https://lore.kernel.org/linux-btrfs/20200528192103.xm45qoxqmkw7i5yl@fiona/ Signed-off-by: David Sterba <dsterba@suse.com>
2020-06-13net: ethernet: ti: ale: fix allmulti for nu type aleGrygorii Strashko1-9/+40
On AM65xx MCU CPSW2G NUSS and 66AK2E/L NUSS allmulti setting does not allow unregistered mcast packets to pass. This happens, because ALE VLAN entries on these SoCs do not contain port masks for reg/unreg mcast packets, but instead store indexes of ALE_VLAN_MASK_MUXx_REG registers which intended for store port masks for reg/unreg mcast packets. This path was missed by commit 9d1f6447274f ("net: ethernet: ti: ale: fix seeing unreg mcast packets with promisc and allmulti disabled"). Hence, fix it by taking into account ALE type in cpsw_ale_set_allmulti(). Fixes: 9d1f6447274f ("net: ethernet: ti: ale: fix seeing unreg mcast packets with promisc and allmulti disabled") Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-13net: ethernet: ti: am65-cpsw-nuss: fix ale parameters initGrygorii Strashko1-1/+1
The ALE parameters structure is created on stack, so it has to be reset before passing to cpsw_ale_create() to avoid garbage values. Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver") Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-13net: atm: Remove the error message according to the atomic contextLiao Pingfang1-3/+1
Looking into the context (atomic!) and the error message should be dropped. Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn> Signed-off-by: David S. Miller <davem@davemloft.net>