From: Maulik Shah mkshah@codeaurora.org
[ Upstream commit 1a53ce9ab4faeb841b33d62d23283dc76c0e7c5a ]
rpmh-rsc driver is fairly core to system and should not be removable once its probed. However it allows to unbind driver from sysfs using below command which results into a crash on sc7180.
echo 18200000.rsc > /sys/bus/platform/drivers/rpmh/unbind
Lets prevent unbind at runtime by setting suppress_bind_attrs flag.
Reviewed-by: Stephen Boyd swboyd@chromium.org Signed-off-by: Maulik Shah mkshah@codeaurora.org Link: https://lore.kernel.org/r/1592808805-2437-1-git-send-email-mkshah@codeaurora... Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/soc/qcom/rpmh-rsc.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index 076fd27f3081c..752a5619f715e 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -1023,6 +1023,7 @@ static struct platform_driver rpmh_driver = { .driver = { .name = "rpmh", .of_match_table = rpmh_drv_match, + .suppress_bind_attrs = true, }, };