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authorKiyoshi Ueda <k-ueda@ct.jp.nec.com>2007-12-11 17:42:27 -0500
committerJens Axboe <jens.axboe@oracle.com>2008-01-28 10:35:59 +0100
commit650e9cfd14a1ac9e077d72962ea0a80946cdb6f8 (patch)
treec2ebc29c809a04e0d450b09c927892b8bd6202aa
parentblk_end_request: changing block layer core (take 4) (diff)
downloadlinux-dev-650e9cfd14a1ac9e077d72962ea0a80946cdb6f8.tar.xz
linux-dev-650e9cfd14a1ac9e077d72962ea0a80946cdb6f8.zip
blk_end_request: changing arm (take 4)
This patch converts arm's OMAP mailbox driver to use blk_end_request interfaces. If the original code was converted literally, blk_end_request would be called with '-EIO' because end_that_request_last() were called with '0' (i.e. failure). But I think these '0's are bugs in the original code because it's unlikely that all requests are treated as failure. (The bugs should have no effect unless these requests have an end_io callback.) So I changed them to pass '0' (i.e. success) to blk_end_request. Cc: Toshihiro Kobayashi <toshihiro.kobayashi@nokia.com> Cc: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
-rw-r--r--arch/arm/plat-omap/mailbox.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c
index 0360b1f14d11..65e9c26f2054 100644
--- a/arch/arm/plat-omap/mailbox.c
+++ b/arch/arm/plat-omap/mailbox.c
@@ -116,8 +116,8 @@ static void mbox_tx_work(struct work_struct *work)
}
spin_lock(q->queue_lock);
- blkdev_dequeue_request(rq);
- end_that_request_last(rq, 0);
+ if (__blk_end_request(rq, 0, 0))
+ BUG();
spin_unlock(q->queue_lock);
}
}
@@ -149,10 +149,8 @@ static void mbox_rx_work(struct work_struct *work)
msg = (mbox_msg_t) rq->data;
- spin_lock_irqsave(q->queue_lock, flags);
- blkdev_dequeue_request(rq);
- end_that_request_last(rq, 0);
- spin_unlock_irqrestore(q->queue_lock, flags);
+ if (blk_end_request(rq, 0, 0))
+ BUG();
mbox->rxq->callback((void *)msg);
}
@@ -263,10 +261,8 @@ omap_mbox_read(struct device *dev, struct device_attribute *attr, char *buf)
*p = (mbox_msg_t) rq->data;
- spin_lock_irqsave(q->queue_lock, flags);
- blkdev_dequeue_request(rq);
- end_that_request_last(rq, 0);
- spin_unlock_irqrestore(q->queue_lock, flags);
+ if (blk_end_request(rq, 0, 0))
+ BUG();
if (unlikely(mbox_seq_test(mbox, *p))) {
pr_info("mbox: Illegal seq bit!(%08x) ignored\n", *p);