staging: pi433: enforce tx_cfg to be set before any message can be sent

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this driver relies on exposing a char device to userspace to tx
messages. Every message can be sent using different trasmitter settings
such so the tx_cfg must be written before sending any messages.
Failing to do so will cause the message to fail silently depending on
printk/dynamic_debug settings which makes it hard to troubleshoot.

This patch add a control variable that will get initialized once tx_cfg
is set for the fd used when interacting with the char device.

Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Link: https://lore.kernel.org/r/20220114221643.GA7843@mail.google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Paulo Miguel Almeida 2022-01-15 11:16:43 +13:00 • committed by Greg Kroah-Hartman

parent 39ddef5681

commit ce514dadc6

1 changed files with 14 additions and 2 deletions

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drivers/staging/pi433/pi433_if.c

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