diff options
| author | Nur Hussein | 2023-04-06 04:25:59 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-05-24 17:32:35 +0100 |
| commit | a6eb3aa0ec5b5078d02c48aad29f80c0a1a17974 (patch) | |
| tree | e0d728e4ab86390ef9923a3e0fcd57bc501a44f2 | |
| parent | a7f9c14aced359c065f2f3022de6de93e85da92c (diff) | |
drm/tegra: Avoid potential 32-bit integer overflow
[ Upstream commit 2429b3c529da29d4277d519bd66d034842dcd70c ]
In tegra_sor_compute_config(), the 32-bit value mode->clock is
multiplied by 1000, and assigned to the u64 variable pclk. We can avoid
a potential 32-bit integer overflow by casting mode->clock to u64 before
we do the arithmetic and assignment.
Signed-off-by: Nur Hussein <hussein@unixcat.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/tegra/sor.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 8af632740673..77723d5f1d3f 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -1153,7 +1153,7 @@ static int tegra_sor_compute_config(struct tegra_sor *sor, struct drm_dp_link *link) { const u64 f = 100000, link_rate = link->rate * 1000; - const u64 pclk = mode->clock * 1000; + const u64 pclk = (u64)mode->clock * 1000; u64 input, output, watermark, num; struct tegra_sor_params params; u32 num_syms_per_line; |