linux-kernel - [PATCH] macintosh/mediabay: Convert to kthread API.

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Message-Id: <11769695954018-git-send-email-ebiederm@xmission.com>
Date:	Thu, 19 Apr 2007 01:58:50 -0600
From:	"Eric W. Biederman" <ebiederm@...ssion.com>
To:	"<Andrew Morton" <akpm@...l.org>
Cc:	<containers@...ts.osdl.org>, Oleg Nesterov <oleg@...sign.ru>,
	Christoph Hellwig <hch@...radead.org>,
	<linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>
Subject: [PATCH] macintosh/mediabay: Convert to kthread API.

From: Eric W. Biederman <ebiederm@...ssion.com>

This patch modifies the startup of the media_bay_task
to use kthread_run and not a combination of kernel_thread,
deamonize and sigfillset.

In addition since we now always want to ignore signals
the MB_IGNORE_SIGNALS define is removed along with the
test for signal_pending.

The result is slightly simpler code that is more
maintainable.

Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>
---
 drivers/macintosh/mediabay.c |   11 ++---------
 1 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
index c803d2b..90c853e 100644
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -20,6 +20,7 @@
 #include <linux/stddef.h>
 #include <linux/init.h>
 #include <linux/ide.h>
+#include <linux/kthread.h>
 #include <asm/prom.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
@@ -35,7 +36,6 @@
 
 
 #define MB_DEBUG
-#define MB_IGNORE_SIGNALS
 
 #ifdef MB_DEBUG
 #define MBDBG(fmt, arg...)	printk(KERN_INFO fmt , ## arg)
@@ -622,11 +622,6 @@ static int media_bay_task(void *x)
 {
 	int	i;
 
-	strcpy(current->comm, "media-bay");
-#ifdef MB_IGNORE_SIGNALS
-	sigfillset(&current->blocked);
-#endif
-
 	for (;;) {
 		for (i = 0; i < media_bay_count; ++i) {
 			down(&media_bays[i].lock);
@@ -636,8 +631,6 @@ static int media_bay_task(void *x)
 		}
 
 		msleep_interruptible(MB_POLL_DELAY);
-		if (signal_pending(current))
-			return 0;
 	}
 }
 
@@ -699,7 +692,7 @@ static int __devinit media_bay_attach(struct macio_dev *mdev, const struct of_de
 
 	/* Startup kernel thread */
 	if (i == 0)
-		kernel_thread(media_bay_task, NULL, CLONE_KERNEL);
+		kthread_run(media_bay_task, NULL, "media-bay");
 
 	return 0;
 
-- 
1.5.0.g53756

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