Ondrej Jirman 5645b68915 bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads ... [ Upstream commit a43ab30dcd ] When doing a 16-bit read that returns data in the MSB byte, the RSB_DATA register will keep the MSB byte unchanged when doing the following 8-bit read. sunxi_rsb_read() will then return a result that contains high byte from 16-bit read mixed with the 8-bit result. The consequence is that after this happens the PMIC's regmap will look like this: (0x33 is the high byte from the 16-bit read) % cat /sys/kernel/debug/regmap/sunxi-rsb-3a3/registers 00: 33 01: 33 02: 33 03: 33 04: 33 05: 33 06: 33 07: 33 08: 33 09: 33 0a: 33 0b: 33 0c: 33 0d: 33 0e: 33 [snip] Fix this by masking the result of the read with the correct mask based on the size of the read. There are no 16-bit users in the mainline kernel, so this doesn't need to get into the stable tree. Signed-off-by: Ondrej Jirman <megous@megous.com> Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-04-24 08:00:23 +02:00
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arm-cci.c	bus: arm-cci: remove unnecessary unreachable()	2018-12-01 09:42:49 +01:00
arm-ccn.c	drivers/perf: arm-ccn: don't log to dmesg in event_init	2018-08-03 07:50:31 +02:00
brcmstb_gisb.c
da8xx-mstpri.c
imx-weim.c
Kconfig
Makefile
mips_cdmm.c
mvebu-mbus.c
omap-ocp2scp.c
omap_l3_noc.c
omap_l3_noc.h
omap_l3_smx.c
omap_l3_smx.h
qcom-ebi2.c
simple-pm-bus.c
sunxi-rsb.c	bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads	2020-04-24 08:00:23 +02:00
tegra-aconnect.c
tegra-gmi.c
uniphier-system-bus.c
vexpress-config.c