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    SubjectRe: [PATCH 5.4 00/50] 5.4.149-rc1 review
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    Hello!

    On 9/24/21 7:43 AM, Greg Kroah-Hartman wrote:
    > This is the start of the stable review cycle for the 5.4.149 release.
    > There are 50 patches in this series, all will be posted as a response
    > to this one. If anyone has any issues with these being applied, please
    > let me know.
    >
    > Responses should be made by Sun, 26 Sep 2021 12:43:20 +0000.
    > Anything received after that time might be too late.
    >
    > The whole patch series can be found in one patch at:
    > https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.149-rc1.gz
    > or in the git tree and branch at:
    > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
    > and the diffstat can be found below.
    >
    > thanks,
    >
    > greg k-h

    Regressions detected.

    While building mxs_defconfig for arm with GCC 8, 9, 10 and 11, the following error was encountered:

    /builds/linux/arch/arm/mach-mxs/mach-mxs.c:285:26: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
    285 | static const struct gpio const tx28_gpios[] __initconst = {
    | ^~~~~
    /builds/linux/drivers/pwm/pwm-mxs.c: In function 'mxs_pwm_probe':
    /builds/linux/drivers/pwm/pwm-mxs.c:164:24: error: implicit declaration of function 'dev_err_probe'; did you mean 'device_reprobe'? [-Werror=implicit-function-declaration]
    164 | return dev_err_probe(&pdev->dev, ret, "failed to reset PWM\n");
    | ^~~~~~~~~~~~~
    | device_reprobe
    cc1: some warnings being treated as errors
    make[3]: *** [/builds/linux/scripts/Makefile.build:280: drivers/pwm/pwm-mxs.o] Error 1

    The same problem is seen withs Clang 10, 11, 12, 13 and nightly:

    /builds/linux/drivers/pwm/pwm-mxs.c:156:10: error: implicit declaration of function 'dev_err_probe' [-Werror,-Wimplicit-function-declaration]
    return dev_err_probe(&pdev->dev, ret, "failed to reset PWM\n");
    ^
    /builds/linux/drivers/pwm/pwm-mxs.c:156:10: note: did you mean 'device_reprobe'?
    /builds/linux/include/linux/device.h:1565:25: note: 'device_reprobe' declared here
    extern int __must_check device_reprobe(struct device *dev);
    ^
    1 error generated.
    make[3]: *** [/builds/linux/scripts/Makefile.build:262: drivers/pwm/pwm-mxs.o] Error 1

    This is also seen in other branches (from 4.4 to 5.4). To reproduce this build locally:

    tuxmake \
    --target-arch=arm \
    --kconfig=mxs_defconfig \
    --toolchain=gcc-11 \
    --runtime=podman \
    config default kernel xipkernel modules dtbs dtbs-legacy debugkernel headers

    or:

    tuxmake \
    --target-arch=arm \
    --kconfig=mxs_defconfig \
    --toolchain=clang-13 \
    --runtime=podman \
    config default kernel xipkernel modules dtbs dtbs-legacy debugkernel headers

    Greetings!

    Daniel Díaz
    daniel.diaz@linaro.org

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