From: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
To: outreachy-kernel@googlegroups.com,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
"Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Huang Rui" <ray.huang@amd.com>,
"VMware Graphics" <linux-graphics-maintainer@vmware.com>,
"Roland Scheidegger" <sroland@vmware.com>,
"Zack Rusin" <zackr@vmware.com>,
"Matthew Wilcox" <willy@infradead.org>
Cc: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
Subject: [PATCH v3] drm/amd/amdgpu: Replace drm_modeset_lock_all with drm_modeset_lock
Date: Mon, 26 Apr 2021 21:28:51 +0200 [thread overview]
Message-ID: <20210426192851.30155-1-fmdefrancesco@gmail.com> (raw)
drm_modeset_lock_all() is not needed here, so it is replaced with
drm_modeset_lock(). The crtc list around which we are looping never
changes, therefore the only lock we need is to protect access to
crtc->state.
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
Changes from v2: Drop file name from the Subject. Cc'ed all maintainers.
Changes from v1: Removed unnecessary braces around single statement
block.
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 671ec1002230..adfeec2b17c0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1439,17 +1439,15 @@ static int amdgpu_pmops_runtime_idle(struct device *dev)
if (amdgpu_device_has_dc_support(adev)) {
struct drm_crtc *crtc;
- drm_modeset_lock_all(drm_dev);
-
drm_for_each_crtc(crtc, drm_dev) {
- if (crtc->state->active) {
+ drm_modeset_lock(&crtc->mutex, NULL);
+ if (crtc->state->active)
ret = -EBUSY;
+ drm_modeset_unlock(&crtc->mutex);
+ if (ret < 0)
break;
- }
}
- drm_modeset_unlock_all(drm_dev);
-
} else {
struct drm_connector *list_connector;
struct drm_connector_list_iter iter;
--
2.31.1
next reply other threads:[~2021-04-26 19:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-26 19:28 Fabio M. De Francesco [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-04-26 19:19 [PATCH v3] drm/amd/amdgpu: Replace drm_modeset_lock_all with drm_modeset_lock Fabio M. De Francesco
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