linux-kernel - [PATCH]: Fix Ultrastor asm snippet

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Message-ID: <20110518150605.GA25262@const.bordeaux.inria.fr>
Date:	Wed, 18 May 2011 17:06:05 +0200
From:	Samuel Thibault <samuel.thibault@...-lyon.org>
To:	James.Bottomley@...e.de
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: [PATCH]: Fix Ultrastor asm snippet

Commit 1292500b replaced

"=m" (*field) : "1" (*field)

with

"=m" (*field) :

with comment "The following patch fixes it by using the '+' operator on
the (*field) operand, marking it as read-write to gcc."
'+' was actually forgotten.  This really puts it.

Signed-off-by: Samuel Thibault <samuel.thibault@...-lyon.org>

diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c
index 0571ef9..dc076e0 100644
--- a/drivers/scsi/ultrastor.c
+++ b/drivers/scsi/ultrastor.c
@@ -306,7 +306,7 @@ static inline int find_and_clear_bit_16(unsigned long *field)
 	"0: bsfw %1,%w0\n\t"
 	"btr %0,%1\n\t"
 	"jnc 0b"
-	: "=&r" (rv), "=m" (*field) :);
+	: "=&r" (rv), "+m" (*field) :);
 
   return rv;
 }
--
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