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Subject[PATCH] drm/vc4: hdmi: Fixed possible integer overflow
Date
Multiplying ints and saving it in unsigned long long
could lead to integer overflow before being type casted to
unsigned long long.

Addresses-Coverity: 1505113: Unintentional integer overflow.

Signed-off-by: Saud Farooqui <farooqui_saud@hotmail.com>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 823d812f4982..ce9d16666d91 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1481,7 +1481,7 @@ vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
unsigned int bpc,
enum vc4_hdmi_output_format fmt)
{
- unsigned long long clock = mode->clock * 1000;
+ unsigned long long clock = mode->clock * 1000ULL;

if (mode->flags & DRM_MODE_FLAG_DBLCLK)
clock = clock * 2;
--
2.25.1
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