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| author | Lukas Wunner <lukas@wunner.de> | 2022-09-11 12:24:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-22 17:10:45 +0300 |
| commit | e2752ae3cfc9a486c5af38b302615705992c3a78 (patch) | |
| tree | 60ca60c73b7c7605dc6d50fe5f933513e787363e /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | ed9f4bb39624af6461774812888847a7d3f7f8b1 (diff) | |
| download | linux-e2752ae3cfc9a486c5af38b302615705992c3a78.tar.xz | |
serial: omap: Disallow RS-485 if rts-gpio is not specified
The serial-omap driver requires an rts-gpio for RS-485 to work.
Historically it has allowed enabling RS-485 even if no rts-gpio was
specified in the device tree.
That doesn't make any sense, so disable RS-485 on probe if rts-gpio is
missing and disallow user space from enabling it.
Three NULL pointer checks for up->rts_gpiod can be dropped as a result,
simplifying the driver slightly.
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/f191dcca0d8ea03598c463fc0d3fba8941ff2275.1662888075.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions