Quoting maitreye (2021-07-21 16:19:40)
> From: Maitreyee Rao <maitr...@codeaurora.org>
>
> Add trace points across the MSM DP driver to help debug
> interop issues.
>
> Changes in v4:
> - Changed goto statement and used if else-if
I think drm likes to see all the changelog here to see patch evolution.
>
> Signed-off-by: Maitreyee Rao <maitr...@codeaurora.org>
> ---
> diff --git a/drivers/gpu/drm/msm/dp/dp_link.c
> b/drivers/gpu/drm/msm/dp/dp_link.c
> index be986da..8c98ab7 100644
> --- a/drivers/gpu/drm/msm/dp/dp_link.c
> +++ b/drivers/gpu/drm/msm/dp/dp_link.c
> @@ -1036,43 +1036,28 @@ int dp_link_process_request(struct dp_link *dp_link)
>
> if (link->request.test_requested == DP_TEST_LINK_EDID_READ) {
> dp_link->sink_request |= DP_TEST_LINK_EDID_READ;
> - return ret;
> }
> -
> - ret = dp_link_process_ds_port_status_change(link);
> - if (!ret) {
> + else if (!(ret = dp_link_process_ds_port_status_change(link))) {
> dp_link->sink_request |= DS_PORT_STATUS_CHANGED;
> - return ret;
> }
> -
> - ret = dp_link_process_link_training_request(link);
> - if (!ret) {
> + else if (!(ret = dp_link_process_link_training_request(link))) {
> dp_link->sink_request |= DP_TEST_LINK_TRAINING;
> - return ret;
> }
> -
> - ret = dp_link_process_phy_test_pattern_request(link);
> - if (!ret) {
> + else if (!(ret = dp_link_process_phy_test_pattern_request(link))) {
> dp_link->sink_request |= DP_TEST_LINK_PHY_TEST_PATTERN;
> - return ret;
> - }
> -
> - ret = dp_link_process_link_status_update(link);
> - if (!ret) {
> + }
> + else if (!(ret = dp_link_process_link_status_update(link))) {
The kernel coding style is to leave the brackets on the same line
if (condition) {
} else if (conditon) {
}
See Documentation/process/coding-style.rst
Also, the if (!(ret = dp_link_...)) style is really hard to read. Maybe
apply this patch before?
----8<----
diff --git a/drivers/gpu/drm/msm/dp/dp_link.c b/drivers/gpu/drm/msm/dp/dp_link.c
index 1195044a7a3b..408cddd90f0f 100644
--- a/drivers/gpu/drm/msm/dp/dp_link.c
+++ b/drivers/gpu/drm/msm/dp/dp_link.c
@@ -1027,41 +1027,22 @@ int dp_link_process_request(struct dp_link *dp_link)
if (link->request.test_requested == DP_TEST_LINK_EDID_READ) {
dp_link->sink_request |= DP_TEST_LINK_EDID_READ;
- return ret;
- }
-
- ret = dp_link_process_ds_port_status_change(link);
- if (!ret) {
+ } else if (!dp_link_process_ds_port_status_change(link)) {
dp_link->sink_request |= DS_PORT_STATUS_CHANGED;
- return ret;
- }
-
- ret = dp_link_process_link_training_request(link);
- if (!ret) {
+ } else if (!dp_link_process_link_training_request(link)) {
dp_link->sink_request |= DP_TEST_LINK_TRAINING;
- return ret;
- }
-
- ret = dp_link_process_phy_test_pattern_request(link);
- if (!ret) {
+ } else if (!dp_link_process_phy_test_pattern_request(link)) {
dp_link->sink_request |= DP_TEST_LINK_PHY_TEST_PATTERN;
- return ret;
- }
-
- ret = dp_link_process_link_status_update(link);
- if (!ret) {
+ } else if (!dp_link_process_link_status_update(link)) {
dp_link->sink_request |= DP_LINK_STATUS_UPDATED;
- return ret;
- }
-
- if (dp_link_is_video_pattern_requested(link)) {
- ret = 0;
- dp_link->sink_request |= DP_TEST_LINK_VIDEO_PATTERN;
- }
+ } else {
+ if (dp_link_is_video_pattern_requested(link))
+ dp_link->sink_request |= DP_TEST_LINK_VIDEO_PATTERN;
- if (dp_link_is_audio_pattern_requested(link)) {
- dp_link->sink_request |= DP_TEST_LINK_AUDIO_PATTERN;
- return -EINVAL;
+ if (dp_link_is_audio_pattern_requested(link)) {
+ dp_link->sink_request |= DP_TEST_LINK_AUDIO_PATTERN;
+ ret = -EINVAL;
+ }
}
return ret;
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