lan743x: replace polling loop by wait_event_timeout()

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The driver's ISR sends a 'software interrupt' event to the probe()
thread using the following method:
- probe(): write 0 to flag, enable s/w interrupt
- probe(): poll on flag, relax using usleep_range()
- ISR    : write 1 to flag

Replace with wake_up() / wait_event_timeout(). Besides being easier
to get right, this abstraction has better timing and memory
consistency properties.

Tested-by: Sven Van Asbroeck <thesven73@gmail.com> # lan7430
Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com>
Link: https://lore.kernel.org/r/20201123191529.14908-2-TheSven73@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Sven Van Asbroeck 2020-11-23 14:15:29 -05:00 • committed by Jakub Kicinski

parent c31799bae8

commit 470dfd808a

2 changed files with 15 additions and 16 deletions

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28

drivers/net/ethernet/microchip/lan743x_main.c

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3

drivers/net/ethernet/microchip/lan743x_main.h

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