linux-kernel - [PATCH 7/16] drivers/scsi/gdth.c: use WARN

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Message-Id: <1351940317-14812-8-git-send-email-Julia.Lawall@lip6.fr>
Date:	Sat,  3 Nov 2012 11:58:28 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Achim Leubner <achim_leubner@...ptec.com>
Cc:	kernel-janitors@...r.kernel.org,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/16] drivers/scsi/gdth.c: use WARN

From: Julia Lawall <Julia.Lawall@...6.fr>

Use WARN rather than printk followed by WARN_ON(1), for conciseness.

If (count) is also merged into WARN, for further conciseness.

A simplified version of the semantic patch that makes part of this
transformation is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression list es;
@@

-printk(
+WARN(1,
  es);
-WARN_ON(1);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/scsi/gdth.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 5d72274..0dbcb27 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -2318,11 +2318,10 @@ static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
                 break;
             buffer += cpnow;
         }
-    } else if (count) {
-        printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
-               ha->hanum);
-        WARN_ON(1);
     }
+	else
+		WARN(count, "GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
+			     ha->hanum);
 }
 
 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
--
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