From: kbuild test robot <lkp@intel.com>
To: Vladimir Zapolskiy <vz@mleia.com>
Cc: kbuild-all@01.org, Lee Jones <lee.jones@linaro.org>,
Linus Walleij <linus.walleij@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Wolfram Sang <wsa@the-dreams.de>,
devicetree@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Subject: Re: [PATCH 4/7] mfd: ds90ux9xx: add TI DS90Ux9xx de-/serializer MFD driver
Date: Tue, 9 Oct 2018 12:08:27 +0800 [thread overview]
Message-ID: <201810091225.bXf3OJJ8%fengguang.wu@intel.com> (raw)
In-Reply-To: <20181008211205.2900-5-vz@mleia.com>
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Hi Vladimir,
I love your patch! Perhaps something to improve:
[auto build test WARNING on ljones-mfd/for-mfd-next]
[also build test WARNING on v4.19-rc7 next-20181008]
[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/Vladimir-Zapolskiy/mfd-pinctrl-add-initial-support-of-TI-DS90Ux9xx-ICs/20181009-090135
base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings
All warnings (new ones prefixed by >>):
drivers/mfd/ds90ux9xx-core.c: In function 'ds90ux9xx_probe':
>> drivers/mfd/ds90ux9xx-core.c:789:4: warning: 'id_code' may be used uninitialized in this function [-Wmaybe-uninitialized]
dev_err(ds90ux9xx->dev,
^~~~~~~~~~~~~~~~~~~~~~~
drivers/mfd/ds90ux9xx-core.c:755:14: note: 'id_code' was declared here
const char *id_code;
^~~~~~~
vim +/id_code +789 drivers/mfd/ds90ux9xx-core.c
749
750 static int ds90ux9xx_read_ic_type(struct i2c_client *client,
751 struct ds90ux9xx *ds90ux9xx)
752 {
753 u8 device_id[DEVICE_ID_LEN + 1] = { 0 };
754 const struct i2c_device_id *id;
755 const char *id_code;
756 unsigned int i;
757 int ret;
758
759 ret = regmap_raw_read(ds90ux9xx->regmap, SER_DES_DEVICE_ID_REG,
760 device_id, DEVICE_ID_LEN);
761 if (ret < 0) {
762 dev_err(ds90ux9xx->dev, "Failed to read device id: %d\n", ret);
763 return ret;
764 }
765
766 id = i2c_match_id(ds90ux9xx_ids, client);
767 if (id) {
768 id_code = ds90ux9xx_devices[id->driver_data].id;
769 if (!strncmp(device_id, id_code, DEVICE_ID_LEN)) {
770 ds90ux9xx->dev_id = id->driver_data;
771 return 0;
772 }
773 }
774
775 /* DS90UH925 device quirk */
776 if (!memcmp(device_id, "\0\0\0\0\0\0", DEVICE_ID_LEN)) {
777 if (id && id->driver_data != TI_DS90UH925)
778 dev_err(ds90ux9xx->dev,
779 "Device ID returned all zeroes, assuming device is DS90UH925\n");
780 ds90ux9xx->dev_id = TI_DS90UH925;
781 return 0;
782 }
783
784 for (i = 0; i < ARRAY_SIZE(ds90ux9xx_devices); i++) {
785 if (strncmp(device_id, ds90ux9xx_devices[i].id, DEVICE_ID_LEN))
786 continue;
787
788 if (id)
> 789 dev_err(ds90ux9xx->dev,
790 "Mismatch between probed device ID [%s] and HW device ID [%s]\n",
791 id_code, device_id);
792
793 ds90ux9xx->dev_id = i;
794 return 0;
795 }
796
797 dev_err(ds90ux9xx->dev, "Device ID [%s] is not supported\n", device_id);
798
799 return -ENODEV;
800 }
801
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2018-10-09 4:09 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-08 21:11 [PATCH 0/7] mfd/pinctrl: add initial support of TI DS90Ux9xx ICs Vladimir Zapolskiy
2018-10-08 21:11 ` [PATCH 1/7] dt-bindings: mfd: ds90ux9xx: add description " Vladimir Zapolskiy
2018-10-09 0:13 ` Marek Vasut
2018-10-09 11:11 ` Vladimir Zapolskiy
2018-10-09 20:55 ` Vladimir Zapolskiy
2018-10-09 21:03 ` Marek Vasut
2018-10-10 8:41 ` Linus Walleij
2018-10-12 11:44 ` Laurent Pinchart
2018-10-13 14:28 ` Vladimir Zapolskiy
2018-10-16 12:30 ` Laurent Pinchart
2018-10-30 16:43 ` Luca Ceresoli
2018-10-30 23:40 ` Vladimir Zapolskiy
2018-10-08 21:12 ` [PATCH 2/7] dt-bindings: mfd: ds90ux9xx: add description of TI DS90Ux9xx I2C bridge Vladimir Zapolskiy
2018-10-12 11:54 ` Laurent Pinchart
2018-10-30 16:43 ` Luca Ceresoli
2018-10-31 20:12 ` Vladimir Zapolskiy
2018-11-03 21:00 ` Luca Ceresoli
2018-11-03 22:07 ` Vladimir Zapolskiy
2018-10-08 21:12 ` [PATCH 3/7] dt-bindings: pinctrl: ds90ux9xx: add description of TI DS90Ux9xx pinmux Vladimir Zapolskiy
2018-10-10 8:45 ` Linus Walleij
2018-10-17 15:02 ` Rob Herring
2018-10-12 12:01 ` Laurent Pinchart
2018-10-13 13:47 ` Vladimir Zapolskiy
2018-10-16 12:48 ` Laurent Pinchart
2018-10-30 16:44 ` Luca Ceresoli
2018-10-31 20:31 ` Vladimir Zapolskiy
2018-10-08 21:12 ` [PATCH 4/7] mfd: ds90ux9xx: add TI DS90Ux9xx de-/serializer MFD driver Vladimir Zapolskiy
2018-10-09 4:08 ` kbuild test robot [this message]
2018-10-09 11:14 ` Vladimir Zapolskiy
2018-10-12 6:03 ` Lee Jones
2018-10-12 7:41 ` Vladimir Zapolskiy
2018-10-12 8:39 ` Lee Jones
2018-10-12 9:20 ` Kieran Bingham
2018-10-12 10:58 ` Vladimir Zapolskiy
2018-10-12 11:34 ` Lee Jones
2018-10-12 14:13 ` Vladimir Zapolskiy
2018-10-12 14:25 ` Lee Jones
2018-10-12 11:47 ` Kieran Bingham
2018-10-12 13:01 ` Laurent Pinchart
2018-10-12 13:59 ` Vladimir Zapolskiy
2018-10-16 13:08 ` Laurent Pinchart
2018-10-23 8:16 ` Vladimir Zapolskiy
2018-10-30 16:44 ` Luca Ceresoli
2018-10-13 15:10 ` Vladimir Zapolskiy
2018-10-16 13:12 ` Laurent Pinchart
2018-10-16 18:32 ` Vladimir Zapolskiy
2018-10-13 12:33 ` Vladimir Zapolskiy
2018-10-12 11:24 ` Vladimir Zapolskiy
2018-10-12 11:43 ` Lee Jones
2018-10-12 14:23 ` Vladimir Zapolskiy
2018-10-12 13:07 ` Laurent Pinchart
2018-10-08 21:12 ` [PATCH 5/7] mfd: ds90ux9xx: add I2C bridge/alias and link connection driver Vladimir Zapolskiy
2018-10-12 6:04 ` Lee Jones
2018-10-12 7:32 ` Vladimir Zapolskiy
2018-10-12 9:03 ` Lee Jones
2018-10-12 13:12 ` Laurent Pinchart
2018-10-12 14:36 ` Vladimir Zapolskiy
2018-10-16 14:06 ` Laurent Pinchart
2018-10-08 21:12 ` [PATCH 6/7] pinctrl: ds90ux9xx: add TI DS90Ux9xx pinmux and GPIO controller driver Vladimir Zapolskiy
2018-10-10 9:04 ` Linus Walleij
2018-10-08 21:12 ` [PATCH 7/7] MAINTAINERS: add entry for TI DS90Ux9xx FPD-Link III drivers Vladimir Zapolskiy
2018-10-12 11:34 ` [PATCH 0/7] mfd/pinctrl: add initial support of TI DS90Ux9xx ICs Laurent Pinchart
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