[PATCH v1] virt: sev-guest: Convert to use jiffies macro

[Chen Yufan]

Use time_after macro instead of using
jiffies directly to handle wraparound.

Signed-off-by: Chen Yufan <chenyufan@xxxxxxxx>
---
 drivers/virt/coco/sev-guest/sev-guest.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c
index 6fc7884ea..937f655f2 100644
--- a/drivers/virt/coco/sev-guest/sev-guest.c
+++ b/drivers/virt/coco/sev-guest/sev-guest.c
@@ -24,6 +24,7 @@
 #include <linux/cleanup.h>
 #include <linux/uuid.h>
 #include <linux/configfs.h>
+#include <linux/jiffies.h>
 #include <uapi/linux/sev-guest.h>
 #include <uapi/linux/psp-sev.h>
 
@@ -400,7 +401,7 @@ static int __handle_guest_request(struct snp_guest_dev *snp_dev, u64 exit_code,
 	 * message sequence number on a different message.
 	 */
 	case -EAGAIN:
-		if (jiffies - req_start > SNP_REQ_MAX_RETRY_DURATION) {
+		if (time_after(jiffies, req_start + SNP_REQ_MAX_RETRY_DURATION)) {
 			rc = -ETIMEDOUT;
 			break;
 		}
-- 
2.39.0