diff options
Diffstat (limited to 'drivers/crypto/ccp/platform-access.c')
| -rw-r--r-- | drivers/crypto/ccp/platform-access.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/crypto/ccp/platform-access.c b/drivers/crypto/ccp/platform-access.c index 94367bc49e..1b8ed33897 100644 --- a/drivers/crypto/ccp/platform-access.c +++ b/drivers/crypto/ccp/platform-access.c @@ -118,9 +118,16 @@ int psp_send_platform_access_msg(enum psp_platform_access_msg msg, goto unlock; } - /* Store the status in request header for caller to investigate */ + /* + * Read status from PSP. If status is non-zero, it indicates an error + * occurred during "processing" of the command. + * If status is zero, it indicates the command was "processed" + * successfully, but the result of the command is in the payload. + * Return both cases to the caller as -EIO to investigate. + */ cmd_reg = ioread32(cmd); - req->header.status = FIELD_GET(PSP_CMDRESP_STS, cmd_reg); + if (FIELD_GET(PSP_CMDRESP_STS, cmd_reg)) + req->header.status = FIELD_GET(PSP_CMDRESP_STS, cmd_reg); if (req->header.status) { ret = -EIO; goto unlock; |