From: Guru Das Srinagesh quic_gurus@quicinc.com
stable inclusion from stable-5.10.80 commit b41c528b14fe7aa3d2453e2b53143e4f19096608 bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 38212b2a8a6fc4c3a6fa99d7445b833bedc9a67c ]
Since __qcom_scm_is_call_available() returns bool, have it return false instead of -EINVAL if an invalid SMC convention is detected.
This fixes the Smatch static checker warning:
drivers/firmware/qcom_scm.c:255 __qcom_scm_is_call_available() warn: signedness bug returning '(-22)'
Fixes: 9d11af8b06a8 ("firmware: qcom_scm: Make __qcom_scm_is_call_available() return bool") Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Guru Das Srinagesh quic_gurus@quicinc.com Reviewed-by: Stephen Boyd swboyd@chromium.org Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Link: https://lore.kernel.org/r/1633982414-28347-1-git-send-email-quic_gurus@quici... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Reviewed-by: Weilong Chen chenweilong@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/firmware/qcom_scm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index c5b20bdc08e9..e10a99860ca4 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -252,7 +252,7 @@ static bool __qcom_scm_is_call_available(struct device *dev, u32 svc_id, break; default: pr_err("Unknown SMC convention being used\n"); - return -EINVAL; + return false; }
ret = qcom_scm_call(dev, &desc, &res);