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author | Nur Hussein <hussein@unixcat.org> | 2023-04-06 04:25:59 +0800 |
---|---|---|
committer | Thierry Reding <treding@nvidia.com> | 2023-04-06 14:02:33 +0200 |
commit | 2429b3c529da29d4277d519bd66d034842dcd70c (patch) | |
tree | d4d9285d158e44b0b0238ac30f1e3ceed206e5dd /drivers/gpu/drm/tegra/sor.c | |
parent | 71ec16f45ef8d10e20c58e85f7d3644e324d3c13 (diff) |
drm/tegra: Avoid potential 32-bit integer overflow
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>
Diffstat (limited to 'drivers/gpu/drm/tegra/sor.c')
-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 cd25f409979c..8d910695775c 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; |