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Wed, 26 Jun 2019 15:48:56 +0000 Received: from mout.gmx.net ([212.227.17.20]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hgAAH-0002yg-2E; Wed, 26 Jun 2019 15:48:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1561564113; bh=mWLTbdtxGfwZ13vnfxlQDfv6DzwTGycBEng3zNk/XaE=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date; b=KYHDR8XZmzxft+7qC8J8cyQ71BSi6JkTsAhWvd+vK2f+YjWqjT42uTfrjNGCcQfdV Z9gkAVPhUJWqXcu/GipMjVfx/QmxN65eJI1oHCOZ/vhkhzCqY9CuiJjHWnxF6jmydK 5QSqYnKAOWM3NXmd6pWkd6wlKwIFV9zX8+x8R0gE= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([37.4.249.111]) by mail.gmx.com (mrgmx102 [212.227.17.168]) with ESMTPSA (Nemesis) id 0LyS5K-1ibrK32soI-015u60; Wed, 26 Jun 2019 17:48:33 +0200 From: Stefan Wahren To: Eric Anholt , Greg Kroah-Hartman , Madhumitha Prabakaran Subject: [PATCH V2] staging: bcm2835-camera: Restore return behavior of ctrl_set_bitrate() Date: Wed, 26 Jun 2019 17:48:11 +0200 Message-Id: <1561564091-14248-1-git-send-email-wahrenst@gmx.net> X-Mailer: git-send-email 2.7.4 X-Provags-ID: V03:K1:oGZaaF0VyX9aU1B2KlshIgSdbA6j0aZLN7PhhBatNb+3vHD/bim IAE1eOdpYqQunHD6Pg0lTq7WJELowblFluMBHzPg8LdD02e6QUAOnsxpP9+ZsegmN4310bJ qbWyOk73ZUf0L+ErExAilg9x9ygGjCdTujEDRrk0vloZc12lmdHMEA8VQs/4HDu6WGeOoac M59q+7daHAsSTIgJrRUuA== X-UI-Out-Filterresults: notjunk:1;V03:K0:+5QZJxEbxD4=:fxpwesVoxYf61efHxmcTKK BddiAtw8+v4csO9cTNV4qSFAebPmgWlPv8KyLXPbOQdcjOl72FUcevKvhsznxi/uv5leFw9uX Sr99W78EPj3EmJmQT1KZ8GMPWcB/hQa1h/t4bhjHByFu4VQ2xaIdpsJfZlFcR2poK1E6dEFT6 jHlzWYjt2kP7anvsjMJvdSVILf9+ei6ysWz1aaMCKFLhxNUNmXH9onDdO8WOanGVr15zb+cVv N4ecxzj0SonMoADsz1UJqgwb8Pi5/me809KQd8pQ/GhKDeLPNwQPXJMMhRbyPgmg5bJVCRUgp MaMwDNiIn3qPl6t4jPx9uiSL5n47PAyt6vVlyufqp1lOr4EqgQFWp+2hknWJYJ8hzkBLgXrdZ gfNGAtlqG9MdHsJds/KNtpjNvF3iCuOWcIyBEGAYKZL78LQggOcIFSlHn+KZ9JU2t9jGJHKF7 0E7pkZuWJIQjaWnt7WTAiO/Pv3tNhKukGVQXG7OTxkwS3+BsXI+vBB+xtOP+syI1QFkP3h+5c 9HVQLB7CA73bkyul1AwmrHNV+OqITaTatTPFXsDojt54X59pz2G3SkQI5z8JZ2aq40Z3vwI6u lyMT+gPPFDx2aNm460FX8Gm+2BisA5xrkpjxb4KIDZvTRDCexntK3cadXRyX7GZQWc6poIcVf atWNWiKYv6KN6vA+lc2Ffl5FM8p7BFtkX4GA0GZ/XhMTvCqDtgxBdQ4sevKJ4riNMAvRuswrM BUrlhaRg3ElFPF3x+S73QaRmNmtv34L7puWW57WxrkKKSJS7Td0oZd1ktx6eAW1CA+I8RmOn3 A+rcm/ZfBf00TXqxsq3/t9h4mL3cP4KhBAxtyYg4z4yjuWt8AmXR6GfvTwCxk+qioygsV6KyY 6yh532oUizARrL8gUwZBauRwgH5rk7e2BWINY86y8vr3nSBzocuIFAekTK42reIsJ+qq9OSD5 IcQroenV1LixMtStvb6CiyHMHMqpxb+Buu+0bdl5qjKcUB4JxBA6KWMPC6Orj+Yf/GKaQlk+k VsgZBuZAUHsZFuULBdIsUg//MyQJ0q/13WL31BSqJX9SAMgHFgsGeDo4yAg4YSF2Mbh1EgZu7 a3+bklRX7SG3Ts= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190626_084853_443115_5EF1DFC7 X-CRM114-Status: GOOD ( 11.55 ) 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: devel@driverdev.osuosl.org, Stefan Wahren , Dave Stevenson , Dan Carpenter , linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" 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 The commit 52c4dfcead49 ("Staging: vc04_services: Cleanup in ctrl_set_bitrate()") changed the return behavior of ctrl_set_bitrate(). We cannot do this because of a bug in the firmware, which breaks probing of bcm2835-camera: bcm2835-v4l2: mmal_init: failed to set all camera controls: -3 Cleanup: Destroy video encoder Cleanup: Destroy image encoder Cleanup: Destroy video render Cleanup: Destroy camera bcm2835-v4l2: bcm2835_mmal_probe: mmal init failed: -3 bcm2835-camera: probe of bcm2835-camera failed with error -3 So restore the old behavior, add an explaining comment and a debug message to verify that the bug has been fixed in firmware. Fixes: 52c4dfcead49 ("Staging: vc04_services: Cleanup in ctrl_set_bitrate()") Signed-off-by: Stefan Wahren Acked-by: Dan Carpenter --- .../staging/vc04_services/bcm2835-camera/controls.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) Changes in V2: - add an explaining comment as suggest by Dan and Dave - add a debug message to verify the firmware behavior -- 2.7.4 diff --git a/drivers/staging/vc04_services/bcm2835-camera/controls.c b/drivers/staging/vc04_services/bcm2835-camera/controls.c index d60e378..c251164 100644 --- a/drivers/staging/vc04_services/bcm2835-camera/controls.c +++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c @@ -604,15 +604,28 @@ static int ctrl_set_bitrate(struct bm2835_mmal_dev *dev, struct v4l2_ctrl *ctrl, const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) { + int ret; struct vchiq_mmal_port *encoder_out; dev->capture.encode_bitrate = ctrl->val; encoder_out = &dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->output[0]; - return vchiq_mmal_port_parameter_set(dev->instance, encoder_out, - mmal_ctrl->mmal_id, &ctrl->val, - sizeof(ctrl->val)); + ret = vchiq_mmal_port_parameter_set(dev->instance, encoder_out, + mmal_ctrl->mmal_id, &ctrl->val, + sizeof(ctrl->val)); + + v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev, + "%s: After: mmal_ctrl:%p ctrl id:0x%x ctrl val:%d ret %d(%d)\n", + __func__, mmal_ctrl, ctrl->id, ctrl->val, ret, + (ret == 0 ? 0 : -EINVAL)); + + /* + * Older firmware versions (pre July 2019) have a bug in handling + * MMAL_PARAMETER_VIDEO_BIT_RATE that result in the call + * returning -MMAL_MSG_STATUS_EINVAL. So ignore errors from this call. + */ + return 0; } static int ctrl_set_bitrate_mode(struct bm2835_mmal_dev *dev,