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c83958779a
android_kernel_samsung_a7y1.../drivers/spi
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Chris Lesiak c83958779a spi: Fix zero length xfer bug 
[ 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 <chris.lesiak@licor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-06 18:20:33 +02:00
..
Kconfig A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Makefile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-adi-v3.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-altera.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-ath79.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-atmel.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-au1550.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bcm53xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bcm53xx.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bcm63xx-hsspi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bcm63xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bcm2835.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bcm2835aux.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bfin-sport.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bfin5xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bitbang-txrx.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-bitbang.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-butterfly.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-cadence.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-clps711x.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-coldfire-qspi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-davinci.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-dln2.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-dw-mid.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-dw-mmio.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-dw-pci.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-dw.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-dw.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-efm32.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-ep93xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-falcon.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-cpm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-cpm.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-dspi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-espi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-lib.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-lib.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-spi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-fsl-spi.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-gpio.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-img-spfi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-imx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-lm70llp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-meson-spifc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-mpc52xx-psc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-mpc52xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-mpc512x-psc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-mt65xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-mxs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-nuc900.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-oc-tiny.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-octeon.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-omap-100k.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-omap-uwire.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-omap2-mcspi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-orion.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-pl022.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-ppc4xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-pxa2xx-dma.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-pxa2xx-pci.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-pxa2xx.c spi: pxa2xx: fix SCR (divisor) calculation 2020-04-06 18:15:39 +02:00
spi-pxa2xx.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-qup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-rb4xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-rockchip.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-rspi.c spi: rspi: Fix sequencer reset during initialization 2020-04-06 18:20:31 +02:00
spi-s3c24xx-fiq.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-s3c24xx-fiq.S A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-s3c24xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-s3c64xx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sc18is602.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sh-hspi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sh-msiof.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sh-sci.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sh.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sirf.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-st-ssc4.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sun4i.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-sun6i.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-tegra20-sflash.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-tegra20-slink.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-tegra114.c spi: tegra114: reset controller on probe 2020-04-06 18:20:08 +02:00
spi-ti-qspi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-tle62x0.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-topcliff-pch.c spi : spi-topcliff-pch: Fix to handle empty DMA buffers 2020-04-06 18:20:29 +02:00
spi-txx9.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-xcomm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-xilinx.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-xlp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-xtensa-xtfpga.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi-zynqmp-gqspi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
spi.c spi: Fix zero length xfer bug 2020-04-06 18:20:33 +02:00
spidev.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30