linux-kernel - Re: [PATCH 3/3] drivers/scsi/NCR5380.c: Replacing yield() with a better alternative

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Date:	Thu, 12 Oct 2006 09:59:04 +0530
From:	Amol Lad <amol@...ismonetworks.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux kernel <linux-kernel@...r.kernel.org>,
	James.Bottomley@...eleye.com,
	kernel Janitors <kernel-janitors@...ts.osdl.org>
Subject: Re: [PATCH 3/3] drivers/scsi/NCR5380.c: Replacing yield() with a
	better alternative


> You want cond_resched() for this driver as its polling the hardware for
> a change that should occur very soon. (Actually you want to throw the
> hardware in the bin)
> 

Replaced schedule_timeout_interruptible() with cond_resched()

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/scsi/NCR5380.c linux-2.6.19-rc1/drivers/scsi/NCR5380.c
--- linux-2.6.19-rc1-orig/drivers/scsi/NCR5380.c	2006-09-21 10:15:39.000000000 +0530
+++ linux-2.6.19-rc1/drivers/scsi/NCR5380.c	2006-10-11 17:57:02.000000000 +0530
@@ -347,7 +347,7 @@ static int NCR5380_poll_politely(struct 
 		if((r & bit) == val)
 			return 0;
 		if(!in_interrupt())
-			yield();
+			cond_resched();
 		else
 			cpu_relax();
 	}


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