Messages in this thread Patch in this message | | | Date | Fri, 16 May 2008 21:11:33 +0200 | From | Matthias Kaehlcke <> | Subject | [PATCH] ATA over Ethernet: Convert emsgs_sema in a completion |
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ATA over Ethernet: The semaphore emsgs_sema is used for signaling an event, convert it in a completion.
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
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diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index e8e60e7..d0ffe63 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -6,6 +6,7 @@ #include <linux/hdreg.h> #include <linux/blkdev.h> +#include <linux/completion.h> #include <linux/delay.h> #include "aoe.h" @@ -35,7 +36,7 @@ struct ErrMsg { static struct ErrMsg emsgs[NMSG]; static int emsgs_head_idx, emsgs_tail_idx; -static struct semaphore emsgs_sema; +static struct completion emsgs_comp; static spinlock_t emsgs_lock; static int nblocked_emsgs_readers; static struct class *aoe_class; @@ -140,7 +141,7 @@ bail: spin_unlock_irqrestore(&emsgs_lock, flags); spin_unlock_irqrestore(&emsgs_lock, flags); if (nblocked_emsgs_readers) - up(&emsgs_sema); + complete(&emsgs_comp); } static ssize_t @@ -216,7 +217,7 @@ aoechr_read(struct file *filp, char __user *buf, size_t cnt, loff_t *off) spin_unlock_irqrestore(&emsgs_lock, flags); - n = down_interruptible(&emsgs_sema); + n = wait_for_completion_interruptible(&emsgs_comp); spin_lock_irqsave(&emsgs_lock, flags); @@ -264,7 +265,7 @@ aoechr_init(void) printk(KERN_ERR "aoe: can't register char device\n"); return n; } - sema_init(&emsgs_sema, 0); + init_completion(&emsgs_comp); spin_lock_init(&emsgs_lock); aoe_class = class_create(THIS_MODULE, "aoe"); if (IS_ERR(aoe_class)) { -- Matthias Kaehlcke Embedded Linux Engineer Barcelona
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