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Commit 2a164d02 authored by Lawrence Rust's avatar Lawrence Rust Committed by Mauro Carvalho Chehab
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[media] Fix cx88 remote control input 



In the IR interrupt handler of cx88-input.c there's a 32-bit multiply
overflow which causes IR pulse durations to be incorrectly calculated.

This is a regression caused by commit 2997137b.

Cc: stable@kernel.org
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent b7534f00

drivers/media/video/cx88/cx88-input.c

+1 −1
Original line number Diff line number Diff line
@@ -524,7 +524,7 @@ void cx88_ir_irq(struct cx88_core *core) 
	for (todo = 32; todo > 0; todo -= bits) {

		ev.pulse = samples & 0x80000000 ? false : true;

		bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));

		ev.duration = (bits * NSEC_PER_SEC) / (1000 * ir_samplerate);

		ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;

		ir_raw_event_store_with_filter(ir->dev, &ev);

		samples <<= bits;

	}