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[79.52.107.152]) by smtp.gmail.com with ESMTPSA id k19sm11878059ejk.117.2021.04.26.12.19.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Apr 2021 12:19:56 -0700 (PDT) From: "Fabio M. De Francesco" To: outreachy-kernel@googlegroups.com, dri-devel@lists.fredesktop.org, linux-kernel@vger.kernel.org, Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , David Airlie , Daniel Vetter , Huang Rui , VMware Graphics , Roland Scheidegger , Zack Rusin , Matthew Wilcox Cc: "Fabio M. De Francesco" Subject: [PATCH v3] drm/amd/amdgpu: Replace drm_modeset_lock_all with drm_modeset_lock Date: Mon, 26 Apr 2021 21:19:52 +0200 Message-Id: <20210426191952.24385-1-fmdefrancesco@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Suggested-by: Matthew Wilcox Signed-off-by: Fabio M. De Francesco Reviewed-by: Matthew Wilcox (Oracle) --- 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