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SubjectRe: [PATCH] [media] ov5645: I2C address change (fwd)
Hello,

It seems that an unlock is missing on line 764.

julia

---------- Forwarded message ----------
Date: Wed, 4 Oct 2017 05:59:09 +0800
From: kbuild test robot <fengguang.wu@intel.com>
To: kbuild@01.org
Cc: Julia Lawall <julia.lawall@lip6.fr>
Subject: Re: [PATCH] [media] ov5645: I2C address change

CC: kbuild-all@01.org
In-Reply-To: <1506950925-13924-1-git-send-email-todor.tomov@linaro.org>
TO: Todor Tomov <todor.tomov@linaro.org>
CC: mchehab@kernel.org, sakari.ailus@linux.intel.com, hansverk@cisco.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Todor Tomov <todor.tomov@linaro.org>
CC: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Todor Tomov <todor.tomov@linaro.org>

Hi Todor,

[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on v4.14-rc3 next-20170929]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Todor-Tomov/ov5645-I2C-address-change/20171003-234231
base: git://linuxtv.org/media_tree.git master
:::::: branch date: 6 hours ago
:::::: commit date: 6 hours ago

>> drivers/media/i2c/ov5645.c:806:1-7: preceding lock on line 760

# https://github.com/0day-ci/linux/commit/c222075023642217170e2ef95f48efef079f9bcd
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout c222075023642217170e2ef95f48efef079f9bcd
vim +806 drivers/media/i2c/ov5645.c

9cae9722 Todor Tomov 2017-04-11 747
9cae9722 Todor Tomov 2017-04-11 748 static int ov5645_s_power(struct v4l2_subdev *sd, int on)
9cae9722 Todor Tomov 2017-04-11 749 {
9cae9722 Todor Tomov 2017-04-11 750 struct ov5645 *ov5645 = to_ov5645(sd);
9cae9722 Todor Tomov 2017-04-11 751 int ret = 0;
9cae9722 Todor Tomov 2017-04-11 752
9cae9722 Todor Tomov 2017-04-11 753 mutex_lock(&ov5645->power_lock);
9cae9722 Todor Tomov 2017-04-11 754
9cae9722 Todor Tomov 2017-04-11 755 /* If the power count is modified from 0 to != 0 or from != 0 to 0,
9cae9722 Todor Tomov 2017-04-11 756 * update the power state.
9cae9722 Todor Tomov 2017-04-11 757 */
9cae9722 Todor Tomov 2017-04-11 758 if (ov5645->power_count == !on) {
9cae9722 Todor Tomov 2017-04-11 759 if (on) {
c2220750 Todor Tomov 2017-10-02 @760 mutex_lock(&ov5645_lock);
c2220750 Todor Tomov 2017-10-02 761
9cae9722 Todor Tomov 2017-04-11 762 ret = ov5645_set_power_on(ov5645);
9cae9722 Todor Tomov 2017-04-11 763 if (ret < 0)
9cae9722 Todor Tomov 2017-04-11 764 goto exit;
9cae9722 Todor Tomov 2017-04-11 765
c2220750 Todor Tomov 2017-10-02 766 ret = ov5645_write_reg_to(ov5645, 0x3100,
c2220750 Todor Tomov 2017-10-02 767 ov5645->i2c_client->addr, 0x78);
c2220750 Todor Tomov 2017-10-02 768 if (ret < 0) {
c2220750 Todor Tomov 2017-10-02 769 dev_err(ov5645->dev,
c2220750 Todor Tomov 2017-10-02 770 "could not change i2c address\n");
c2220750 Todor Tomov 2017-10-02 771 ov5645_set_power_off(ov5645);
c2220750 Todor Tomov 2017-10-02 772 mutex_unlock(&ov5645_lock);
c2220750 Todor Tomov 2017-10-02 773 goto exit;
c2220750 Todor Tomov 2017-10-02 774 }
c2220750 Todor Tomov 2017-10-02 775
c2220750 Todor Tomov 2017-10-02 776 mutex_unlock(&ov5645_lock);
c2220750 Todor Tomov 2017-10-02 777
9cae9722 Todor Tomov 2017-04-11 778 ret = ov5645_set_register_array(ov5645,
9cae9722 Todor Tomov 2017-04-11 779 ov5645_global_init_setting,
9cae9722 Todor Tomov 2017-04-11 780 ARRAY_SIZE(ov5645_global_init_setting));
9cae9722 Todor Tomov 2017-04-11 781 if (ret < 0) {
9cae9722 Todor Tomov 2017-04-11 782 dev_err(ov5645->dev,
9cae9722 Todor Tomov 2017-04-11 783 "could not set init registers\n");
9cae9722 Todor Tomov 2017-04-11 784 ov5645_set_power_off(ov5645);
9cae9722 Todor Tomov 2017-04-11 785 goto exit;
9cae9722 Todor Tomov 2017-04-11 786 }
9cae9722 Todor Tomov 2017-04-11 787
9cae9722 Todor Tomov 2017-04-11 788 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
9cae9722 Todor Tomov 2017-04-11 789 OV5645_SYSTEM_CTRL0_STOP);
9cae9722 Todor Tomov 2017-04-11 790 if (ret < 0) {
9cae9722 Todor Tomov 2017-04-11 791 ov5645_set_power_off(ov5645);
9cae9722 Todor Tomov 2017-04-11 792 goto exit;
9cae9722 Todor Tomov 2017-04-11 793 }
9cae9722 Todor Tomov 2017-04-11 794 } else {
9cae9722 Todor Tomov 2017-04-11 795 ov5645_set_power_off(ov5645);
9cae9722 Todor Tomov 2017-04-11 796 }
9cae9722 Todor Tomov 2017-04-11 797 }
9cae9722 Todor Tomov 2017-04-11 798
9cae9722 Todor Tomov 2017-04-11 799 /* Update the power count. */
9cae9722 Todor Tomov 2017-04-11 800 ov5645->power_count += on ? 1 : -1;
9cae9722 Todor Tomov 2017-04-11 801 WARN_ON(ov5645->power_count < 0);
9cae9722 Todor Tomov 2017-04-11 802
9cae9722 Todor Tomov 2017-04-11 803 exit:
9cae9722 Todor Tomov 2017-04-11 804 mutex_unlock(&ov5645->power_lock);
9cae9722 Todor Tomov 2017-04-11 805
9cae9722 Todor Tomov 2017-04-11 @806 return ret;
9cae9722 Todor Tomov 2017-04-11 807 }
9cae9722 Todor Tomov 2017-04-11 808

:::::: The code at line 806 was first introduced by commit
:::::: 9cae97221aabfb3ca5daaa424a66c9d8eee1ff59 [media] media: Add a driver for the ov5645 camera sensor

:::::: TO: Todor Tomov <todor.tomov@linaro.org>
:::::: CC: Mauro Carvalho Chehab <mchehab@s-opensource.com>

---
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