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[98.203.232.209]) by smtp.gmail.com with ESMTPSA id w5sm20508154pfl.31.2016.11.18.16.32.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 18 Nov 2016 16:32:10 -0800 (PST) From: Kevin Hilman To: linux-media@vger.kernel.org, Hans Verkuil Cc: devicetree@vger.kernel.org, Sekhar Nori , Axel Haslam , =?UTF-8?q?Bartosz=20Go=C5=82aszewski?= , Alexandre Bailon , David Lechner Subject: [PATCH 2/4] [media] davinci: vpif_capture: don't lock over s_stream Date: Fri, 18 Nov 2016 16:32:06 -0800 Message-Id: <20161119003208.10550-2-khilman@baylibre.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20161119003208.10550-1-khilman@baylibre.com> References: <20161119003208.10550-1-khilman@baylibre.com> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2016.11.19.2716 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1200_1299 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, DATE_TZ_NA 0, DKIM_SIGNATURE 0, IN_REP_TO 0, LEGITIMATE_NEGATE 0, LEGITIMATE_SIGNS 0, MSG_THREAD 0, MULTIPLE_REAL_RCPTS 0, NO_URI_HTTPS 0, REFERENCES 0, SINGLE_URI_IN_BODY 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CC_NAME 0, __CC_NAME_DIFF_FROM_ACC 0, __CC_REAL_NAMES 0, __CP_MEDIA_BODY 0, __CP_URI_IN_BODY 0, __CTE 0, __FROM_DOMAIN_IN_ANY_CC2 0, __FROM_DOMAIN_IN_RCPT 0, __HAS_CC_HDR 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MIME_TEXT_P 0, __MIME_TEXT_P1 0, __MIME_VERSION 0, __MULTIPLE_RCPTS_CC_X2 0, __NO_HTML_TAG_RAW 0, __REFERENCES 0, __SANE_MSGID 0, __SINGLE_URI_TEXT 0, __TO_MALFORMED_2 0, __TO_NAME 0, __TO_NAME_DIFF_FROM_ACC 0, __TO_NO_NAME 0, __TO_REAL_NAMES 0, __URI_IN_BODY 0, __URI_NO_WWW 0, __URI_NS , __URI_WITH_PATH 0, __YOUTUBE_RCVD 0' 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 | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c index 79cef74e164f..becc3e63b472 100644 --- a/drivers/media/platform/davinci/vpif_capture.c +++ b/drivers/media/platform/davinci/vpif_capture.c @@ -193,12 +193,16 @@ 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); if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) { vpif_dbg(1, debug, "stream on failed in subdev\n"); goto err; } + spin_lock_irqsave(&common->irqlock, flags); + /* Call vpif_set_params function to set the parameters and addresses */ ret = vpif_set_video_params(vpif, ch->channel_id); if (ret < 0) {