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drm/vc4: hdmi: Fixed possible integer overflow

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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>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/PA4P189MB1421E63C0FF3EBF234A80AB38BA79@PA4P189MB1421.EURP189.PROD.OUTLOOK.COM
This commit is contained in:
Saud Farooqui 2022-06-09 23:50:31 +05:00 committed by Maxime Ripard
parent be33d52ef5
commit 5f940e528d
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GPG Key ID: E3EF0D6F671851C5
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/vc4/vc4_hdmi.c
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@ -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;