lkml.org 
[lkml]   [2017]   [Apr]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/1] drm/radeon: check return value of radeon_ring_lock
Date
From: Pan Bian <bianpan2016@163.com>

Function radeon_ring_lock() returns an errno on failure, and its return
value should be validated. However, in functions r420_cp_errata_init()
and r420_cp_errata_fini(), its return value is not checked. This patch
adds the checks.

Signed-off-by: Pan Bian <bianpan2016@163.com>
---
drivers/gpu/drm/radeon/r420.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c
index 2828605..a8c2b37 100644
--- a/drivers/gpu/drm/radeon/r420.c
+++ b/drivers/gpu/drm/radeon/r420.c
@@ -215,7 +215,8 @@ static void r420_cp_errata_init(struct radeon_device *rdev)
* of the CP init, apparently.
*/
radeon_scratch_get(rdev, &rdev->config.r300.resync_scratch);
- radeon_ring_lock(rdev, ring, 8);
+ if (radeon_ring_lock(rdev, ring, 8))
+ return;
radeon_ring_write(ring, PACKET0(R300_CP_RESYNC_ADDR, 1));
radeon_ring_write(ring, rdev->config.r300.resync_scratch);
radeon_ring_write(ring, 0xDEADBEEF);
@@ -229,7 +230,8 @@ static void r420_cp_errata_fini(struct radeon_device *rdev)
/* Catch the RESYNC we dispatched all the way back,
* at the very beginning of the CP init.
*/
- radeon_ring_lock(rdev, ring, 8);
+ if (radeon_ring_lock(rdev, ring, 8))
+ return;
radeon_ring_write(ring, PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
radeon_ring_write(ring, R300_RB3D_DC_FINISH);
radeon_ring_unlock_commit(rdev, ring, false);
--
1.9.1

\
 
 \ /
  Last update: 2017-04-23 15:39    [W:0.043 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site