pinctrl: qcom: Check qcom_scm_io_readl() return value in msm_gpio_irq_set_type()

In msm_gpio_irq_set_type(), when pctrl->intr_target_use_scm is set, the
return value of qcom_scm_io_readl(addr, &val) is ignored.  If the SCM read
fails, val remains uninitialised and its stack contents are modified and
written back to the hardware register via qcom_scm_io_writel().

Check the return value of qcom_scm_io_readl() before modifying and writing
back val.

Fixes: 13bec8d49bdf ("pinctrl: qcom: use scm_call to route GPIO irq to Apps")
Closes: https://sashiko.dev/#/bug/linux-a5545ffd-48cc-4856-94cc-4b2dd7968f50
Cc: stable@vger.kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>

0 files changed, 0 insertions, 0 deletions