diff options
| author | Su Hui <suhui@nfschina.com> | 2023-06-08 09:24:43 +0800 |
|---|---|---|
| committer | Douglas Anderson <dianders@chromium.org> | 2023-06-13 11:00:56 -0700 |
| commit | 95011f267c44a4d1f9ca1769e8a29ab2c559e004 (patch) | |
| tree | 5acc2a41ca3a8893a98ae7560c6dfb02fab38fe5 | |
| parent | 11d24327c2d7ad7f24fcc44fb00e1fa91ebf6525 (diff) | |
| download | linux-95011f267c44a4d1f9ca1769e8a29ab2c559e004.tar.gz | |
drm/bridge: ti-sn65dsi86: Avoid possible buffer overflow
Smatch error:buffer overflow 'ti_sn_bridge_refclk_lut' 5 <= 5.
Fixes: cea86c5bb442 ("drm/bridge: ti-sn65dsi86: Implement the pwm_chip")
Signed-off-by: Su Hui <suhui@nfschina.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230608012443.839372-1-suhui@nfschina.com
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-sn65dsi86.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 7a748785c5459..4676cf2900dfd 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -298,6 +298,10 @@ static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata) if (refclk_lut[i] == refclk_rate) break; + /* avoid buffer overflow and "1" is the default rate in the datasheet. */ + if (i >= refclk_lut_size) + i = 1; + regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, REFCLK_FREQ_MASK, REFCLK_FREQ(i)); |