crypto: tegra: return error upon wait timeout

Return an error value from process_crypt_req if
wait_for_completion_timeout returns 0 in case of a timeout waiting
for crypto operation to complete.

Bug 200771660

Change-Id: Ie7597a053274cace6b930895e3f969622a813d76
Signed-off-by: Harinarayan Bhatta <hbhatta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/#/c/linux-nvidia/+/2596050
(cherry picked from commit f62687d53e0437b6138c02a4463acee21361cd26)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2599867
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Phoenix Jung <pjung@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/crypto/tegra-cryptodev.c b/drivers/crypto/tegra-cryptodev.c
index e9bc70cdb..43a060535 100644
--- a/drivers/crypto/tegra-cryptodev.c
+++ b/drivers/crypto/tegra-cryptodev.c
@@ -357,16 +357,22 @@ static int process_crypt_req(struct file *filp, struct tegra_crypto_ctx *ctx,
                         /* crypto driver is asynchronous */
                         ret = wait_for_completion_timeout(&tcrypt_complete.restart,
                                                 msecs_to_jiffies(5000));
-                        if (ret == 0)
+                        if (ret == 0) {
+                                pr_err("%scrypt timed out\n",
+                                        crypt_req->encrypt ? "en" : "de");
+                                ret = -ENODATA;
                                 goto process_req_buf_out;
+                        }
 
                         if (tcrypt_complete.req_err < 0) {
                                 ret = tcrypt_complete.req_err;
+                                pr_err("%scrypt failed (%d)\n",
+                                        crypt_req->encrypt ? "en" : "de", ret);
                                 goto process_req_buf_out;
                         }
                 } else if (ret < 0) {
-                        pr_debug("%scrypt failed (%d)\n",
-                                crypt_req->encrypt ? "en" : "de", ret);
+                        pr_err("%scrypt failed (%d)\n",
+                                        crypt_req->encrypt ? "en" : "de", ret);
                         goto process_req_buf_out;
                 }