From: matthias.kaehlcke@gmail.com
To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org
Cc: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Subject: [patch 2/3] MBCS: Convert dmawritelock to mutex
Date: Wed, 24 Oct 2007 19:09:33 +0200 [thread overview]
Message-ID: <20071024170933.GJ9824@traven> (raw)
In-Reply-To: 20071024170049.949862374@gmail.com
[-- Attachment #1: char-mbcs-dmawritelock-to-mutex --]
[-- Type: text/plain, Size: 1916 bytes --]
MBCS: Convert the semaphore dmawritelock to the mutex API
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Index: kernel/linux-2.6/drivers/char/mbcs.h
===================================================================
--- kernel.orig/linux-2.6/drivers/char/mbcs.h 2007-10-23 17:50:50.000000000 +0200
+++ kernel/linux-2.6/drivers/char/mbcs.h 2007-10-24 17:02:12.000000000 +0200
@@ -537,7 +537,7 @@
atomic_t dmawrite_done;
atomic_t dmaread_done;
atomic_t algo_done;
- struct semaphore dmawritelock;
+ struct mutex dmawritelock;
struct semaphore dmareadlock;
struct mutex algolock;
};
Index: kernel/linux-2.6/drivers/char/mbcs.c
===================================================================
--- kernel.orig/linux-2.6/drivers/char/mbcs.c 2007-10-23 17:50:50.000000000 +0200
+++ kernel/linux-2.6/drivers/char/mbcs.c 2007-10-24 17:02:12.000000000 +0200
@@ -311,7 +311,7 @@
{
int rv = 0;
- if (down_interruptible(&soft->dmawritelock))
+ if (mutex_lock_interruptible(&soft->dmawritelock))
return -ERESTARTSYS;
atomic_set(&soft->dmawrite_done, 0);
@@ -337,7 +337,7 @@
*off += len;
dmawrite_exit:
- up(&soft->dmawritelock);
+ mutex_unlock(&soft->dmawritelock);
return rv;
}
@@ -764,7 +764,7 @@
init_waitqueue_head(&soft->dmaread_queue);
init_waitqueue_head(&soft->algo_queue);
- init_MUTEX(&soft->dmawritelock);
+ mutex_init(&soft->dmawritelock);
init_MUTEX(&soft->dmareadlock);
mutex_init(&soft->algolock);
--
Matthias Kaehlcke
Linux Application Developer
Barcelona
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(Isaac Newton)
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next prev parent reply other threads:[~2007-10-24 17:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20071024170049.949862374@gmail.com>
2007-10-24 17:09 ` [patch 1/3] MBCS: Convert algolock to mutex matthias.kaehlcke
2007-10-24 17:09 ` matthias.kaehlcke [this message]
2007-10-24 17:09 ` [patch 3/3] MBCS: Convert dmareadlock " matthias.kaehlcke
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