From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liviu Dudau Subject: [PATCH 1/2] drm: mali-dp: Clear the config_valid flag before using it in wait_event. Date: Fri, 29 Jul 2016 15:44:15 +0100 Message-ID: <20160729144416.2860-2-Liviu.Dudau@arm.com> References: <20160729144416.2860-1-Liviu.Dudau@arm.com> Return-path: In-Reply-To: <20160729144416.2860-1-Liviu.Dudau@arm.com> Sender: linux-kernel-owner@vger.kernel.org To: David Airlie , Mali DP Maintainers , Daniel Vetter Cc: DRI devel , LKML , Brian Starkey List-Id: dri-devel@lists.freedesktop.org config_valid variable is used to signal the activation of the CVAL request when the vsync interrupt has fired. malidp_set_and_wait_config_valid() uses the variable in wait_event_interruptible_timeout without clearing it first, so the wait is skipped. Cc: Brian Starkey Signed-off-by: Liviu Dudau --- drivers/gpu/drm/arm/malidp_drv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index 82171d2..87c9249 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -42,6 +42,7 @@ static int malidp_set_and_wait_config_valid(struct drm_device *drm) struct malidp_hw_device *hwdev = malidp->dev; int ret; + atomic_set(&malidp->config_valid, 0); hwdev->set_config_valid(hwdev); /* don't wait for config_valid flag if we are in config mode */ if (hwdev->in_config_mode(hwdev)) -- 2.9.0