linux-kernel - [PATCH v2] drm/imagination: Convert to use time

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Message-Id: <20240823085341.8081-1-chenyufan@vivo.com>
Date: Fri, 23 Aug 2024 16:53:40 +0800
From: Chen Yufan <chenyufan@...o.com>
To: Frank Binns <frank.binns@...tec.com>,
	Matt Coster <matt.coster@...tec.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Donald Robson <donald.robson@...tec.com>,
	Sarah Walker <sarah.walker@...tec.com>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Cc: opensource.kernel@...o.com,
	Chen Yufan <chenyufan@...o.com>
Subject: [PATCH v2] drm/imagination: Convert to use time_before macro

Use time_*() macros instead of using
jiffies directly to handle overflow issues.

Fixes: cc1aeedb98ad ("drm/imagination: Convert to use time_before macro")
Signed-off-by: Chen Yufan <chenyufan@...o.com>
---
The modifications made compared to the previous version are as follows:
1. Change the prefix of subject.
2. Add fixes.
3. Drop the cast of RESERVE_SLOT_TIMEOUT.
---
 drivers/gpu/drm/imagination/pvr_ccb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/imagination/pvr_ccb.c b/drivers/gpu/drm/imagination/pvr_ccb.c
index 4deeac7ed..2bbdc05a3 100644
--- a/drivers/gpu/drm/imagination/pvr_ccb.c
+++ b/drivers/gpu/drm/imagination/pvr_ccb.c
@@ -321,7 +321,7 @@ static int pvr_kccb_reserve_slot_sync(struct pvr_device *pvr_dev)
 	bool reserved = false;
 	u32 retries = 0;
 
-	while ((jiffies - start_timestamp) < (u32)RESERVE_SLOT_TIMEOUT ||
+	while (time_before(jiffies, start_timestamp + RESERVE_SLOT_TIMEOUT) ||
 	       retries < RESERVE_SLOT_MIN_RETRIES) {
 		reserved = pvr_kccb_try_reserve_slot(pvr_dev);
 		if (reserved)
-- 
2.39.0