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[98.203.232.209]) by smtp.gmail.com with ESMTPSA id t25sm54655244pgo.9.2016.11.29.15.57.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 29 Nov 2016 15:57:15 -0800 (PST) From: Kevin Hilman To: linux-media@vger.kernel.org Cc: Hans Verkuil , Laurent Pinchart , Sakari Ailus , linux-arm-kernel@lists.infradead.org, Sekhar Nori , Rob Herring , devicetree@vger.kernel.org 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> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20161129235712.29846-1-khilman@baylibre.com> References: <20161129235712.29846-1-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: 2016.11.29.235118 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_1100_1199 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, __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_NO_NAME 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 | 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;