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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:47:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:47:48 +0000
commita1865fbd182b17f2d2f465f557af5b45501c5f1c (patch)
tree59da519ef2e59c763bb8efdbe67bc348cf833767 /drivers/crypto/ccp/platform-access.c
parentAdding upstream version 6.7.9. (diff)
downloadlinux-a1865fbd182b17f2d2f465f557af5b45501c5f1c.tar.xz
linux-a1865fbd182b17f2d2f465f557af5b45501c5f1c.zip
Adding upstream version 6.7.12.upstream/6.7.12
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/crypto/ccp/platform-access.c')
-rw-r--r--drivers/crypto/ccp/platform-access.c11
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;