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| author | Robert Foss <robert.foss@linaro.org> | 2021-08-18 20:13:17 +0300 |
|---|---|---|
| committer | Robert Foss <robert.foss@linaro.org> | 2021-08-18 21:56:39 +0300 |
| commit | 7f16d0f3b8e2d13f940e944cd17044ca8eeb8b32 (patch) | |
| tree | 8a14d534913ec313f96662786ba48fe647df25e9 | |
| parent | 6fa701d13ae6925f267185b2469e49f384e450ec (diff) | |
| download | linux-7f16d0f3b8e2d13f940e944cd17044ca8eeb8b32.tar.xz | |
drm/bridge: anx7625: Propagate errors from sp_tx_rst_aux()
The return value of sp_tx_rst_aux() is not propagated, which means
both compiler warnings and potential errors not being handled.
Fixes: 8bdfc5dae4e3 ("drm/bridge: anx7625: Add anx7625 MIPI DSI/DPI to DP")
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210818171318.1848272-1-robert.foss@linaro.org
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/anx7625.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index 14d73fb1dd15..ea414cd349b5 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -720,7 +720,7 @@ static int edid_read(struct anx7625_data *ctx, ret = sp_tx_aux_rd(ctx, 0xf1); if (ret) { - sp_tx_rst_aux(ctx); + ret = sp_tx_rst_aux(ctx); DRM_DEV_DEBUG_DRIVER(dev, "edid read fail, reset!\n"); } else { ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, @@ -735,7 +735,7 @@ static int edid_read(struct anx7625_data *ctx, if (cnt > EDID_TRY_CNT) return -EIO; - return 0; + return ret; } static int segments_edid_read(struct anx7625_data *ctx, @@ -785,7 +785,7 @@ static int segments_edid_read(struct anx7625_data *ctx, if (cnt > EDID_TRY_CNT) return -EIO; - return 0; + return ret; } static int sp_tx_edid_read(struct anx7625_data *ctx, @@ -887,7 +887,11 @@ static int sp_tx_edid_read(struct anx7625_data *ctx, } /* Reset aux channel */ - sp_tx_rst_aux(ctx); + ret = sp_tx_rst_aux(ctx); + if (ret < 0) { + DRM_DEV_ERROR(dev, "Failed to reset aux channel!\n"); + return ret; + } return (blocks_num + 1); } |