From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: [PATCH v4 1/4] [media] davinci: vpif_capture: don't lock over s_stream Date: Tue, 29 Nov 2016 15:57:09 -0800 Message-ID: <20161129235712.29846-2-khilman@baylibre.com> References: <20161129235712.29846-1-khilman@baylibre.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20161129235712.29846-1-khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Hans Verkuil , Laurent Pinchart , Sakari Ailus , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Sekhar Nori , Rob Herring , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org Video capture subdevs may be over I2C and may sleep during xfer, so we cannot do IRQ-disabled locking when calling the subdev. Signed-off-by: Kevin Hilman --- drivers/media/platform/davinci/vpif_capture.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c index 5104cc0ee40e..9f8f41c0f251 100644 --- a/drivers/media/platform/davinci/vpif_capture.c +++ b/drivers/media/platform/davinci/vpif_capture.c @@ -193,7 +193,10 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count) } } + spin_unlock_irqrestore(&common->irqlock, flags); ret = v4l2_subdev_call(ch->sd, video, s_stream, 1); + spin_lock_irqsave(&common->irqlock, flags); + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) { vpif_dbg(1, debug, "stream on failed in subdev\n"); goto err; -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html