linux-kernel - [PATCH] drivers/mmc/mmc.c: Replacing yield() with a better alternative

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Message-Id: <1160570743.19143.307.camel@amol.verismonetworks.com>
Date:	Wed, 11 Oct 2006 18:15:43 +0530
From:	Amol Lad <amol@...ismonetworks.com>
To:	linux kernel <linux-kernel@...r.kernel.org>
Cc:	kernel Janitors <kernel-janitors@...ts.osdl.org>
Subject: [PATCH] drivers/mmc/mmc.c: Replacing yield() with a better
	alternative

In 2.6, the semantics of calling yield() changed from "sleep for a
bit" to "I really don't want to run for a while".  This matches POSIX
better, but there's a lot of drivers still using yield() when they mean
cond_resched(), schedule() or even schedule_timeout().

For this driver cond_resched() seems to be a better
alternative

Tested compile only

Signed-off-by: Amol Lad <amol@...ismonetworks.com>
---
diff -uprN -X linux-2.6.19-rc1-orig/Documentation/dontdiff linux-2.6.19-rc1-orig/drivers/mmc/mmc.c linux-2.6.19-rc1/drivers/mmc/mmc.c
--- linux-2.6.19-rc1-orig/drivers/mmc/mmc.c	2006-10-05 14:00:46.000000000 +0530
+++ linux-2.6.19-rc1/drivers/mmc/mmc.c	2006-10-11 17:57:02.000000000 +0530
@@ -454,7 +454,7 @@ static void mmc_deselect_cards(struct mm
 static inline void mmc_delay(unsigned int ms)
 {
 	if (ms < HZ / 1000) {
-		yield();
+		cond_resched();
 		mdelay(ms);
 	} else {
 		msleep_interruptible (ms);


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