leds: st1202: Validate pattern input before stopping the sequence

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Input validation for pattern duration is performed inside the write
loop, after the pattern sequence has already been stopped. If
validation fails mid-loop the chip is left with the sequence stopped
and partially written pattern data, with no recovery.

Move all input validation before the mutex and before any hardware
interaction, so an invalid input leaves the chip state unchanged.

Signed-off-by: Manuel Fombuena <fombuena@outlook.com>
Assisted-by: Claude:claude-sonnet-4-6
Link: https://patch.msgid.link/GV1PR08MB84975929B6ED7CDFBCEB7D76C5F52@GV1PR08MB8497.eurprd08.prod.outlook.com
Signed-off-by: Lee Jones <lee@kernel.org>

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Manuel Fombuena 2026-07-02 23:28:20 +01:00 • committed by Lee Jones

parent 9c019a8cb9

commit fd2529ba8f

1 changed files with 6 additions and 4 deletions

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drivers/leds/leds-st1202.c

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