Attachment 33379 Details for Bug 25506 – use udelay again.

[patch] use udelay again.

0001-drm-radeon-kms-use-udelay-for-short-delays.patch (text/plain), 1.02 KB, created by Dave Airlie on 2010-02-17 15:43:08 UTC

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Creator: Dave Airlie

Created: 2010-02-17 15:43:08 UTC

Size: 1.02 KB

patch

obsolete

>From b1bd3bb9f2f5522415497a075313c8a2ba1cc16c Mon Sep 17 00:00:00 2001
>From: Dave Airlie <airlied@redhat.com>
>Date: Sun, 31 Jan 2010 07:07:14 +1000
>Subject: [PATCH] drm/radeon/kms: use udelay for short delays
>
>For usec delays use udelay instead of scheduling, this should
>allow reclocking to happen faster.
>
>Signed-off-by: Dave Airlie <airlied@redhat.com>
>---
> drivers/gpu/drm/radeon/atom.c |    3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
>index 2a3df55..592ce91 100644
>--- a/drivers/gpu/drm/radeon/atom.c
>+++ b/drivers/gpu/drm/radeon/atom.c
>@@ -643,7 +643,8 @@ static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
> 	uint8_t count = U8((*ptr)++);
> 	SDEBUG("   count: %d\n", count);
> 	if (arg == ATOM_UNIT_MICROSEC)
>-		schedule_timeout_uninterruptible(usecs_to_jiffies(count));
>+		udelay(count);
>+	//	schedule_timeout_uninterruptible(usecs_to_jiffies(count));
> 	else
> 		schedule_timeout_uninterruptible(msecs_to_jiffies(count));
> }
>-- 
>1.6.5.2
>

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