| From 2a164d02dd34c6b49a3f0995900e0f8af102b804 Mon Sep 17 00:00:00 2001 |
| From: Lawrence Rust <lvr@softsystem.co.uk> |
| Date: Fri, 8 Apr 2011 09:50:45 -0300 |
| Subject: [media] Fix cx88 remote control input |
| |
| From: Lawrence Rust <lvr@softsystem.co.uk> |
| |
| commit 2a164d02dd34c6b49a3f0995900e0f8af102b804 upstream. |
| |
| 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 2997137be8eba. |
| |
| Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| |
| --- |
| drivers/media/video/cx88/cx88-input.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/media/video/cx88/cx88-input.c |
| +++ b/drivers/media/video/cx88/cx88-input.c |
| @@ -523,7 +523,7 @@ 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; |
| } |
