diff options
| author | Su Hui | 2023-06-08 09:24:43 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-06-21 16:01:00 +0200 |
| commit | a5acbe4ea5d0847bfce1f12f4cd8780349ba652a (patch) | |
| tree | 0f4307099f49f70eb3c635bf8e59d68345810602 /drivers/gpu | |
| parent | 90748be0f4f386ad3143cd7538ef37647e1f6260 (diff) | |
drm/bridge: ti-sn65dsi86: Avoid possible buffer overflow
[ Upstream commit 95011f267c44a4d1f9ca1769e8a29ab2c559e004 ]
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
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu')
| -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 aeca9c066bf2..d16775c973c4 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)); |