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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-27 16:35:44 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-27 16:35:44 +0100 |
| commit | 3f0bb496ee41d0eb99d308768c9f8593cbd3eb9f (patch) | |
| tree | c56b697a7e818e91974d951872781bfd9b3af5b5 /drivers/gpu/drm/msm/dp/dp_aux.c | |
| parent | d7fbdc575b33c374ce88ccfe3ab364f7eb240f8a (diff) | |
| parent | 9c33eef84e3110963d6f41d87d63bc40d716eb1f (diff) | |
| download | linux-3f0bb496ee41d0eb99d308768c9f8593cbd3eb9f.tar.bz2 | |
Merge branches 'thermal-tools' and 'thermal-int340x'
Merge tmon fix and int340x driver improvement for 5.17-rc1.
* thermal-tools:
thermal: tools: tmon: remove unneeded local variable
* thermal-int340x:
thermal: int340x: Use struct_group() for memcpy() region
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_aux.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_aux.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_aux.c b/drivers/gpu/drm/msm/dp/dp_aux.c index eb40d8413bca..6d36f63c3338 100644 --- a/drivers/gpu/drm/msm/dp/dp_aux.c +++ b/drivers/gpu/drm/msm/dp/dp_aux.c @@ -33,6 +33,7 @@ struct dp_aux_private { bool read; bool no_send_addr; bool no_send_stop; + bool initted; u32 offset; u32 segment; @@ -331,6 +332,10 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux, } mutex_lock(&aux->mutex); + if (!aux->initted) { + ret = -EIO; + goto exit; + } dp_aux_update_offset_and_segment(aux, msg); dp_aux_transfer_helper(aux, msg, true); @@ -380,6 +385,8 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux, } aux->cmd_busy = false; + +exit: mutex_unlock(&aux->mutex); return ret; @@ -431,8 +438,13 @@ void dp_aux_init(struct drm_dp_aux *dp_aux) aux = container_of(dp_aux, struct dp_aux_private, dp_aux); + mutex_lock(&aux->mutex); + dp_catalog_aux_enable(aux->catalog, true); aux->retry_cnt = 0; + aux->initted = true; + + mutex_unlock(&aux->mutex); } void dp_aux_deinit(struct drm_dp_aux *dp_aux) @@ -441,7 +453,12 @@ void dp_aux_deinit(struct drm_dp_aux *dp_aux) aux = container_of(dp_aux, struct dp_aux_private, dp_aux); + mutex_lock(&aux->mutex); + + aux->initted = false; dp_catalog_aux_enable(aux->catalog, false); + + mutex_unlock(&aux->mutex); } int dp_aux_register(struct drm_dp_aux *dp_aux) |