From: kernel test robot <lkp@intel.com>
To: Sebastian Reichel <sebastian.reichel@collabora.com>,
Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>, Ian Ray <ian.ray@ge.com>,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org
Subject: Re: [PATCHv3 5/5] misc: gehc-achc: new driver
Date: Fri, 28 May 2021 21:36:52 +0800 [thread overview]
Message-ID: <202105282107.8J6Ri01F-lkp@intel.com> (raw)
In-Reply-To: <20210528113346.37137-6-sebastian.reichel@collabora.com>
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Hi Sebastian,
I love your patch! Perhaps something to improve:
[auto build test WARNING on robh/for-next]
[also build test WARNING on char-misc/char-misc-testing v5.13-rc3]
[cannot apply to spi/for-next next-20210528]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Sebastian-Reichel/GE-Healthcare-PPD-firmware-upgrade-driver-for-ACHC/20210528-193816
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: mips-randconfig-r031-20210528 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 6505c630407c5feec818f0bb1c284f9eeebf2071)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://github.com/0day-ci/linux/commit/dac014da90e2715a80e4f7139ac40333cd3d4bec
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Sebastian-Reichel/GE-Healthcare-PPD-firmware-upgrade-driver-for-ACHC/20210528-193816
git checkout dac014da90e2715a80e4f7139ac40333cd3d4bec
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/spi/spidev.c:730:5: warning: no previous prototype for function 'spidev_probe' [-Wmissing-prototypes]
int spidev_probe(struct spi_device *spi)
^
drivers/spi/spidev.c:730:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int spidev_probe(struct spi_device *spi)
^
static
>> drivers/spi/spidev.c:793:5: warning: no previous prototype for function 'spidev_remove' [-Wmissing-prototypes]
int spidev_remove(struct spi_device *spi)
^
drivers/spi/spidev.c:793:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int spidev_remove(struct spi_device *spi)
^
static
2 warnings generated.
vim +/spidev_probe +730 drivers/spi/spidev.c
729
> 730 int spidev_probe(struct spi_device *spi)
731 {
732 struct spidev_data *spidev;
733 int status;
734 unsigned long minor;
735
736 /*
737 * spidev should never be referenced in DT without a specific
738 * compatible string, it is a Linux implementation thing
739 * rather than a description of the hardware.
740 */
741 WARN(spi->dev.of_node &&
742 of_device_is_compatible(spi->dev.of_node, "spidev"),
743 "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
744
745 spidev_probe_acpi(spi);
746
747 /* Allocate driver data */
748 spidev = kzalloc(sizeof(*spidev), GFP_KERNEL);
749 if (!spidev)
750 return -ENOMEM;
751
752 /* Initialize the driver data */
753 spidev->spi = spi;
754 spin_lock_init(&spidev->spi_lock);
755 mutex_init(&spidev->buf_lock);
756
757 INIT_LIST_HEAD(&spidev->device_entry);
758
759 /* If we can allocate a minor number, hook up this device.
760 * Reusing minors is fine so long as udev or mdev is working.
761 */
762 mutex_lock(&device_list_lock);
763 minor = find_first_zero_bit(minors, N_SPI_MINORS);
764 if (minor < N_SPI_MINORS) {
765 struct device *dev;
766
767 spidev->devt = MKDEV(SPIDEV_MAJOR, minor);
768 dev = device_create(spidev_class, &spi->dev, spidev->devt,
769 spidev, "spidev%d.%d",
770 spi->master->bus_num, spi->chip_select);
771 status = PTR_ERR_OR_ZERO(dev);
772 } else {
773 dev_dbg(&spi->dev, "no minor number available!\n");
774 status = -ENODEV;
775 }
776 if (status == 0) {
777 set_bit(minor, minors);
778 list_add(&spidev->device_entry, &device_list);
779 }
780 mutex_unlock(&device_list_lock);
781
782 spidev->speed_hz = spi->max_speed_hz;
783
784 if (status == 0)
785 spi_set_drvdata(spi, spidev);
786 else
787 kfree(spidev);
788
789 return status;
790 }
791 EXPORT_SYMBOL_GPL(spidev_probe);
792
> 793 int spidev_remove(struct spi_device *spi)
794 {
795 struct spidev_data *spidev = spi_get_drvdata(spi);
796
797 /* prevent new opens */
798 mutex_lock(&device_list_lock);
799 /* make sure ops on existing fds can abort cleanly */
800 spin_lock_irq(&spidev->spi_lock);
801 spidev->spi = NULL;
802 spin_unlock_irq(&spidev->spi_lock);
803
804 list_del(&spidev->device_entry);
805 device_destroy(spidev_class, spidev->devt);
806 clear_bit(MINOR(spidev->devt), minors);
807 if (spidev->users == 0)
808 kfree(spidev);
809 mutex_unlock(&device_list_lock);
810
811 return 0;
812 }
813 EXPORT_SYMBOL_GPL(spidev_remove);
814
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next prev parent reply other threads:[~2021-05-28 13:37 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-28 11:33 [PATCHv3 0/5] GE Healthcare PPD firmware upgrade driver for ACHC Sebastian Reichel
2021-05-28 11:33 ` [PATCHv3 1/5] spi: add ancillary device support Sebastian Reichel
2021-05-28 11:33 ` [PATCHv3 2/5] spi: dt-bindings: support devices with multiple chipselects Sebastian Reichel
2021-06-02 19:23 ` Rob Herring
2021-05-28 11:33 ` [PATCHv3 3/5] dt-bindings: misc: ge-achc: Convert to DT schema format Sebastian Reichel
2021-05-28 16:21 ` Rob Herring
2021-06-09 11:47 ` Mark Brown
2021-06-09 15:50 ` Sebastian Reichel
2021-05-28 11:33 ` [PATCHv3 4/5] ARM: dts: imx53-ppd: Fix ACHC entry Sebastian Reichel
2021-05-28 11:33 ` [PATCHv3 5/5] misc: gehc-achc: new driver Sebastian Reichel
2021-05-28 12:19 ` Greg Kroah-Hartman
2021-05-28 14:06 ` Sebastian Reichel
2021-05-28 14:56 ` Greg Kroah-Hartman
2021-05-28 13:36 ` kernel test robot [this message]
2021-05-28 14:33 ` kernel test robot
2021-05-28 15:04 ` kernel test robot
2021-06-09 12:42 ` Mark Brown
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