From: Roel Kluin <12o3l@tiscali.nl>
Date: Fri, 25 Apr 2008 03:37:54 +0000 (+0800)
Subject: pata_bf54x: decrease count first.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f9d42491723dbb77bdc9b9dc7e096ea57d535992;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

pata_bf54x: decrease count first.

When count reaches 0 the postfix decrement still subtracts (to -1),
so bfin_reset_controller() returns as if the busy flag was cleared
while it was not.

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
index e4cf73c4b70b..a75de0684c15 100644
--- a/drivers/ata/pata_bf54x.c
+++ b/drivers/ata/pata_bf54x.c
@@ -1417,7 +1417,7 @@ static int bfin_reset_controller(struct ata_host *host)
 	count = 10000000;
 	do {
 		status = read_atapi_register(base, ATA_REG_STATUS);
-	} while (count-- && (status & ATA_BUSY));
+	} while (--count && (status & ATA_BUSY));
 
 	/* Enable only ATAPI Device interrupt */
 	ATAPI_SET_INT_MASK(base, 1);