soc: qcom: rpmh-rsc: Set suppress_bind_attrs flag

BugLink: https://bugs.launchpad.net/bugs/1892417
[ 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.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>

diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index 0ba1f465db122efca40888d6501a90b596e4d015..8924fcd9f5f59287d3e730cf6e4c7badf3044ff8 100644 (file)
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -715,6 +715,7 @@ static struct platform_driver rpmh_driver = {
        .driver = {
                  .name = "rpmh",
                  .of_match_table = rpmh_drv_match,
+                 .suppress_bind_attrs = true,
        },
 };