linux-kernel - Re: [PATCH v1 1/2] selftests: gpio: gpio-sim: Fix BUG: test FAILED due to recent change

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Date:   Thu, 11 May 2023 14:43:03 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-gpio@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bamvor Jian Zhang <bamv2005@...il.com>,
        Shuah Khan <shuah@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mirsad Todorovac <mirsad.todorovac@....unizg.hr>
Subject: Re: [PATCH v1 1/2] selftests: gpio: gpio-sim: Fix BUG: test FAILED
 due to recent change

On Tue, Apr 11, 2023 at 7:15 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> From: Mirsad Todorovac <mirsad.todorovac@....unizg.hr>
>
> According to Mirsad the gpio-sim.sh test appears to FAIL in a wrong way
> due to missing initialisation of shell variables:
>
>  4.2. Bias settings work correctly
>  cat: /sys/devices/platform/gpio-sim.0/gpiochip18/sim_gpio0/value: No such file or directory
>  ./gpio-sim.sh: line 393: test: =: unary operator expected
>  bias setting does not work
>  GPIO gpio-sim test FAIL
>
> After this change the test passed:
>
>  4.2. Bias settings work correctly
>  GPIO gpio-sim test PASS
>
> His testing environment is AlmaLinux 8.7 on Lenovo desktop box with
> the latest Linux kernel based on v6.2:
>
>   Linux 6.2.0-mglru-kmlk-andy-09238-gd2980d8d8265 x86_64
>
> Suggested-by: Mirsad Todorovac <mirsad.todorovac@....unizg.hr>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  tools/testing/selftests/gpio/gpio-sim.sh | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/tools/testing/selftests/gpio/gpio-sim.sh b/tools/testing/selftests/gpio/gpio-sim.sh
> index 9f539d454ee4..fa2ce2b9dd5f 100755
> --- a/tools/testing/selftests/gpio/gpio-sim.sh
> +++ b/tools/testing/selftests/gpio/gpio-sim.sh
> @@ -389,6 +389,9 @@ create_chip chip
>  create_bank chip bank
>  set_num_lines chip bank 8
>  enable_chip chip
> +DEVNAME=`configfs_dev_name chip`
> +CHIPNAME=`configfs_chip_name chip bank`
> +SYSFS_PATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio0/value"
>  $BASE_DIR/gpio-mockup-cdev -b pull-up /dev/`configfs_chip_name chip bank` 0
>  test `cat $SYSFS_PATH` = "1" || fail "bias setting does not work"
>  remove_chip chip
> --
> 2.40.0.1.gaa8946217a0b
>

Queued for fixes. Thanks!

Bart