Mark Hasemeyer bef4a48f4e spi: Fix null dereference on suspend ... A race condition exists where a synchronous (noqueue) transfer can be active during a system suspend. This can cause a null pointer dereference exception to occur when the system resumes. Example order of events leading to the exception: 1. spi_sync() calls __spi_transfer_message_noqueue() which sets ctlr->cur_msg 2. Spi transfer begins via spi_transfer_one_message() 3. System is suspended interrupting the transfer context 4. System is resumed 6. spi_controller_resume() calls spi_start_queue() which resets cur_msg to NULL 7. Spi transfer context resumes and spi_finalize_current_message() is called which dereferences cur_msg (which is now NULL) Wait for synchronous transfers to complete before suspending by acquiring the bus mutex and setting/checking a suspend flag. Signed-off-by: Mark Hasemeyer <markhas@chromium.org> Link: https://lore.kernel.org/r/20231107144743.v1.1.I7987f05f61901f567f7661763646cb7d7919b528@changeid Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@kernel.org		2023-11-10 13:54:58 +00:00
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ad7877.h
ads7846.h
altera.h
at73c213.h
corgi_lcd.h	backlight: corgi_lcd: fix missing prototype	2023-07-27 15:39:17 +02:00
ds1305.h
eeprom.h
flash.h
libertas_spi.h
max7301.h
mc33880.h
mmc_spi.h
mxs-spi.h
pxa2xx_spi.h	spi: pxa2xx: switch to use modern name	2023-08-21 14:29:24 +01:00
rspi.h
sh_hspi.h
sh_msiof.h	spi: sh-msiof: switch to use modern name	2023-08-21 14:29:35 +01:00
spi-fsl-dspi.h
spi-mem.h	mtd: spi-nor: avoid holes in struct spi_mem_op	2023-07-27 16:54:22 +02:00
spi.h	spi: Fix null dereference on suspend	2023-11-10 13:54:58 +00:00
spi_bitbang.h
spi_gpio.h
spi_oc_tiny.h
tdo24m.h
tle62x0.h
xilinx_spi.h