6.6-stable review patch. If anyone has any objections, please let me know.
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From: I Hsin Cheng richard120310@gmail.com
commit eb0851e14432f3b87c77b704c835ac376deda03a upstream.
Coverity scan reported the usage of "mode->clock * 1000" may lead to integer overflow. Use "1000ULL" instead of "1000" when utilizing it to avoid potential integer overflow issue.
Link: https://scan5.scan.coverity.com/#/project-view/10074/10063?selectedIssue=164... Signed-off-by: I Hsin Cheng richard120310@gmail.com Reviewed-by: Martin Blumenstingl martin.blumenstingl@googlemail.com Fixes: 1017560164b6 ("drm/meson: use unsigned long long / Hz for frequency types") Link: https://lore.kernel.org/r/20250505184338.678540-1-richard120310@gmail.com Signed-off-by: Neil Armstrong neil.armstrong@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/meson/meson_encoder_hdmi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c +++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c @@ -75,7 +75,7 @@ static void meson_encoder_hdmi_set_vclk( unsigned long long venc_freq; unsigned long long hdmi_freq;
- vclk_freq = mode->clock * 1000; + vclk_freq = mode->clock * 1000ULL;
/* For 420, pixel clock is half unlike venc clock */ if (encoder_hdmi->output_bus_fmt == MEDIA_BUS_FMT_UYYVYY8_0_5X24) @@ -123,7 +123,7 @@ static enum drm_mode_status meson_encode struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge); struct meson_drm *priv = encoder_hdmi->priv; bool is_hdmi2_sink = display_info->hdmi.scdc.supported; - unsigned long long clock = mode->clock * 1000; + unsigned long long clock = mode->clock * 1000ULL; unsigned long long phy_freq; unsigned long long vclk_freq; unsigned long long venc_freq;