kernel_samsung_a53x/drivers/gpu
Jonathan Marek 34b9267737 drm/msm/dsi: fix 32-bit signed integer extension in pclk_rate calculation
[ Upstream commit 358b762400bd94db2a14a72dfcef74c7da6bd845 ]

When (mode->clock * 1000) is larger than (1<<31), int to unsigned long
conversion will sign extend the int to 64 bits and the pclk_rate value
will be incorrect.

Fix this by making the result of the multiplication unsigned.

Note that above (1<<32) would still be broken and require more changes, but
its unlikely anyone will need that anytime soon.

Fixes: c4d8cfe516dc ("drm/msm/dsi: add implementation for helper functions")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/618434/
Link: https://lore.kernel.org/r/20241007050157.26855-2-jonathan@marek.ca
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-23 23:21:58 +01:00
..
arm gpu: exynos: Small Underclock 2024-11-18 18:58:02 +01:00
drm drm/msm/dsi: fix 32-bit signed integer extension in pclk_rate calculation 2024-11-23 23:21:58 +01:00
host1x gpu: host1x: Do not setup DMA for virtual devices 2024-11-19 11:32:44 +01:00
ipu-v3 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
trace Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vga Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00