diff options
| author | Karol Przybylski <karprzy7@gmail.com> | 2024-12-15 13:53:55 +0100 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> | 2024-12-16 12:03:30 +0200 |
| commit | 67a615c5cb6dc33ed35492dc0d67e496cbe8de68 (patch) | |
| tree | 09c6b4b0cd141e317d659d99a7e5a423e1efb8d5 | |
| parent | 0ca953ac226eaffbe1a795f5e517095a8d494921 (diff) | |
drm: zynqmp_dp: Fix integer overflow in zynqmp_dp_rate_get()drm-misc-next-2024-12-16
This patch fixes a potential integer overflow in the zynqmp_dp_rate_get()
The issue comes up when the expression
drm_dp_bw_code_to_link_rate(dp->test.bw_code) * 10000 is evaluated using 32-bit
Now the constant is a compatible 64-bit type.
Resolves coverity issues: CID 1636340 and CID 1635811
Cc: stable@vger.kernel.org
Fixes: 28edaacb821c ("drm: zynqmp_dp: Add debugfs interface for compliance testing")
Signed-off-by: Karol Przybylski <karprzy7@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/stable/20241212095057.1015146-1-karprzy7%40gmail.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241215125355.938953-1-karprzy7@gmail.com
| -rw-r--r-- | drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c index 25c5dc61ee88..56a261a40ea3 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c @@ -2190,7 +2190,7 @@ static int zynqmp_dp_rate_get(void *data, u64 *val) struct zynqmp_dp *dp = data; mutex_lock(&dp->lock); - *val = drm_dp_bw_code_to_link_rate(dp->test.bw_code) * 10000; + *val = drm_dp_bw_code_to_link_rate(dp->test.bw_code) * 10000ULL; mutex_unlock(&dp->lock); return 0; } |