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[158.248.194.18]) by smtp.gmail.com with ESMTPSA id d21sm4057995lfc.73.2019.07.18.09.15.30 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 18 Jul 2019 09:15:31 -0700 (PDT) From: Sam Ravnborg To: dri-devel@lists.freedesktop.org, Intel Graphics Development Subject: [PATCH v1 05/11] drm/vblank: drop use of DRM_WAIT_ON() Date: Thu, 18 Jul 2019 18:15:01 +0200 Message-Id: <20190718161507.2047-6-sam@ravnborg.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190718161507.2047-1-sam@ravnborg.org> References: <20190718161507.2047-1-sam@ravnborg.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190718_091534_009385_AF96F885 X-CRM114-Status: GOOD ( 13.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Liviu Dudau , Lionel Landwerlin , Chris Wilson , Eric Anholt , Sam Ravnborg , Rob Herring , Maxime Ripard , CK Hu , Thierry Reding , Daniel Vetter , Chunming Zhou , Jani Nikula , Maarten Lankhorst , linux-mediatek@lists.infradead.org, Stefan Agner , Matthias Brugger , Sean Paul , linux-arm-kernel@lists.infradead.org, Boris Brezillon , Thomas Zimmermann , Rob Clark , =?utf-8?q?Noralf_Tr=C3=B8nnes?= , Philipp Zabel , =?utf-8?q?Christian_K=C3=B6nig?= Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP DRM_WAIT_ON() is from the deprecated drm_os_linux header and the modern replacement is the wait_event_*. The return values differ, so a conversion is needed to keep the original interface towards userspace. Introduced a switch/case to make code obvious and to allow different debug prints depending on the result. Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Reviewed-by: Sean Paul --- drivers/gpu/drm/drm_vblank.c | 29 ++++++++++++++++++++--------- 1 file changed, 20 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c index 603ab105125d..8e9ac187500e 100644 --- a/drivers/gpu/drm/drm_vblank.c +++ b/drivers/gpu/drm/drm_vblank.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include "drm_internal.h" @@ -1672,19 +1671,31 @@ int drm_wait_vblank_ioctl(struct drm_device *dev, void *data, if (req_seq != seq) { DRM_DEBUG("waiting on vblank count %llu, crtc %u\n", req_seq, pipe); - DRM_WAIT_ON(ret, vblank->queue, 3 * HZ, - vblank_passed(drm_vblank_count(dev, pipe), - req_seq) || - !READ_ONCE(vblank->enabled)); + ret = wait_event_interruptible_timeout(vblank->queue, + vblank_passed(drm_vblank_count(dev, pipe), req_seq) || + !READ_ONCE(vblank->enabled), + msecs_to_jiffies(3000)); } - if (ret != -EINTR) { + switch (ret) { + case 0: + /* timeout */ + ret = -EBUSY; drm_wait_vblank_reply(dev, pipe, &vblwait->reply); - - DRM_DEBUG("crtc %d returning %u to client\n", + DRM_DEBUG("timeout waiting for vblank. crtc %d returning %u to client\n", pipe, vblwait->reply.sequence); - } else { + break; + case -ERESTARTSYS: + /* interrupted by signal */ + ret = -EINTR; DRM_DEBUG("crtc %d vblank wait interrupted by signal\n", pipe); + break; + default: + ret = 0; + drm_wait_vblank_reply(dev, pipe, &vblwait->reply); + DRM_DEBUG("crtc %d returning %u to client\n", + pipe, vblwait->reply.sequence); + break; } done: