firmware: zynqmp: Report error when xilinx_pm_request called from EL3
Function should report error when called in EL3 context. Also report it as
error instead 0 (success).
Reported-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
index adcef15..4911734 100644
--- a/drivers/firmware/firmware-zynqmp.c
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -156,8 +156,10 @@
*/
struct pt_regs regs;
- if (current_el() == 3)
- return 0;
+ if (current_el() == 3) {
+ printf("%s: Can't call SMC from EL3 context\n", __func__);
+ return -EPERM;
+ }
regs.regs[0] = PM_SIP_SVC | api_id;
regs.regs[1] = ((u64)arg1 << 32) | arg0;