From: "Fabio M. De Francesco" <fmdefrancesco@gmail.com> To: outreachy-kernel@googlegroups.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Christian Koenig <christian.koenig@amd.com>, Huang Rui <ray.huang@amd.com>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, Matthew Wilcox <willy@infradead.org> Cc: "Fabio M. De Francesco" <fmdefrancesco@gmail.com> Subject: [PATCH v2] drm/amd/amdgpu/amdgpu_drv.c: Replace drm_modeset_lock_all with drm_modeset_lock Date: Thu, 22 Apr 2021 20:39:19 +0200 [thread overview] Message-ID: <20210422183919.14959-1-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 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
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From: "Fabio M. De Francesco" <fmdefrancesco@gmail.com> To: outreachy-kernel@googlegroups.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Christian Koenig <christian.koenig@amd.com>, Huang Rui <ray.huang@amd.com>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, Matthew Wilcox <willy@infradead.org> Cc: "Fabio M. De Francesco" <fmdefrancesco@gmail.com> Subject: [PATCH v2] drm/amd/amdgpu/amdgpu_drv.c: Replace drm_modeset_lock_all with drm_modeset_lock Date: Thu, 22 Apr 2021 20:39:19 +0200 [thread overview] Message-ID: <20210422183919.14959-1-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 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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
next reply other threads:[~2021-04-22 18:39 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-22 18:39 Fabio M. De Francesco [this message] 2021-04-22 18:39 ` [PATCH v2] drm/amd/amdgpu/amdgpu_drv.c: Replace drm_modeset_lock_all with drm_modeset_lock Fabio M. De Francesco
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