From: "Gustavo A. R. Silva" <gustavo-L1vi/lXTdts+Va1GwOuvDg@public.gmane.org>
To: Signed-off-by-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org,
"Roman Li" <Roman.Li-5C7GfCeVMHo@public.gmane.org>,
"Alex Deucher" <alexander.deucher-5C7GfCeVMHo@public.gmane.org>,
"Christian König" <christian.koenig-5C7GfCeVMHo@public.gmane.org>,
"David (ChunMing) Zhou"
<David1.Zhou-5C7GfCeVMHo@public.gmane.org>,
"David Airlie" <airlied-cv59FeDIM0c@public.gmane.org>
Cc: "Gustavo A. R. Silva"
<gustavo-L1vi/lXTdts+Va1GwOuvDg@public.gmane.org>,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] drm/amd/display: fix type of variable
Date: Fri, 15 Jun 2018 08:32:28 -0500 [thread overview]
Message-ID: <20180615133228.GA28677@embeddedor.com> (raw)
Currently, the maximum value that *counter* can reach is 255, and
code at line 150: while (counter < 1000) { implies a bigger value
could be expected.
Fix this by changing the type of variable *counter* from uint8_t
to uint16_t.
Addresses-Coverity-ID: 1470030 ("Operands don't affect result")
Fixes: 2b6199a1d1b7 ("drm/amd/display: replace msleep with udelay in fbc path")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c
index e2994d3..111c492 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c
@@ -143,7 +143,7 @@ static void wait_for_fbc_state_changed(
struct dce110_compressor *cp110,
bool enabled)
{
- uint8_t counter = 0;
+ uint16_t counter = 0;
uint32_t addr = mmFBC_STATUS;
uint32_t value;
--
2.7.4
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next reply other threads:[~2018-06-15 13:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-15 13:32 Gustavo A. R. Silva [this message]
2018-06-15 16:39 ` [PATCH] drm/amd/display: fix type of variable Alex Deucher
2018-06-15 16:39 ` Alex Deucher
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