From 0b4e4c4bbd68469329e17368dfe8ef4297298b96 Mon Sep 17 00:00:00 2001
From: Yu Zhe <yuzhe@nfschina.com>
Date: Thu, 28 Jul 2022 11:30:26 +0800
Subject: drm/amdkfd: use time_is_before_jiffies(a + b) to replace "jiffies - a
 > b"
Git-commit: dcfe584b00f1d6dcbeeb769b939f53a3c4f04143
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849

time_is_before_jiffies deals with timer wrapping correctly.

Signed-off-by: Yu Zhe <yuzhe@nfschina.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c b/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c
index a9466d154395..34772fe74296 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c
@@ -146,7 +146,7 @@ static void interrupt_wq(struct work_struct *work)
 	struct kfd_dev *dev = container_of(work, struct kfd_dev,
 						interrupt_work);
 	uint32_t ih_ring_entry[KFD_MAX_RING_ENTRY_SIZE];
-	long start_jiffies = jiffies;
+	unsigned long start_jiffies = jiffies;
 
 	if (dev->device_info.ih_ring_entry_size > sizeof(ih_ring_entry)) {
 		dev_err_once(dev->adev->dev, "Ring entry too small\n");
@@ -156,7 +156,7 @@ static void interrupt_wq(struct work_struct *work)
 	while (dequeue_ih_ring_entry(dev, ih_ring_entry)) {
 		dev->device_info.event_interrupt_class->interrupt_wq(dev,
 								ih_ring_entry);
-		if (jiffies - start_jiffies > HZ) {
+		if (time_is_before_jiffies(start_jiffies + HZ)) {
 			/* If we spent more than a second processing signals,
 			 * reschedule the worker to avoid soft-lockup warnings
 			 */
-- 
2.38.1