[PATCH 7/8] msm: scm: Add logging of actual return code from scm call

[Stephen Boyd]

From: Olav Haugan <ohaugan at codeaurora.org>

When an error occurs during an scm call the error returned is
remapped so we lose the original error code. This means that
when an error occurs we have no idea what actually failed within
the secure environment.

Add a logging statement that will log the actual error code from
scm call allowing us to easily determine what caused the error
to occur.

Signed-off-by: Olav Haugan <ohaugan at codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd at codeaurora.org>
---
 arch/arm/mach-qcom/scm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-qcom/scm.c b/arch/arm/mach-qcom/scm.c
index 7c62c03324f4..cfd4717aec78 100644
--- a/arch/arm/mach-qcom/scm.c
+++ b/arch/arm/mach-qcom/scm.c
@@ -152,6 +152,7 @@ static inline void *scm_get_response_buffer(const struct scm_response *rsp)
 
 static int scm_remap_error(int err)
 {
+	pr_err("scm_call failed with error code %d\n", err);
 	switch (err) {
 	case SCM_ERROR:
 		return -EIO;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation