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cciss: factor out cciss_setnodename

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Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Stephen M. Cameron 2010-08-26 13:55:54 -05:00 committed by Jens Axboe
parent 2521610942
commit 4f43f32cd3
1 changed files with 29 additions and 36 deletions
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65
drivers/block/cciss.c
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@ -1305,6 +1305,34 @@ static int cciss_getnodename(ctlr_info_t *h, void __user *argp)
return 0; return 0;
} }
static int cciss_setnodename(ctlr_info_t *h, void __user *argp)
{
NodeName_type NodeName;
unsigned long flags;
int i;
if (!argp)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(NodeName, argp, sizeof(NodeName_type)))
return -EFAULT;
spin_lock_irqsave(&h->lock, flags);
/* Update the field, and then ring the doorbell */
for (i = 0; i < 16; i++)
writeb(NodeName[i], &h->cfgtable->ServerName[i]);
writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
break;
udelay(1000); /* delay and try again */
}
spin_unlock_irqrestore(&h->lock, flags);
if (i >= MAX_IOCTL_CONFIG_WAIT)
return -EAGAIN;
return 0;
}
static int cciss_ioctl(struct block_device *bdev, fmode_t mode, static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg) unsigned int cmd, unsigned long arg)
{ {
@ -1325,42 +1353,7 @@ static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
case CCISS_GETNODENAME: case CCISS_GETNODENAME:
return cciss_getnodename(h, argp); return cciss_getnodename(h, argp);
case CCISS_SETNODENAME: case CCISS_SETNODENAME:
{ return cciss_setnodename(h, argp);
NodeName_type NodeName;
unsigned long flags;
int i;
if (!arg)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user
(NodeName, argp, sizeof(NodeName_type)))
return -EFAULT;
spin_lock_irqsave(&h->lock, flags);
/* Update the field, and then ring the doorbell */
for (i = 0; i < 16; i++)
writeb(NodeName[i],
&h->cfgtable->ServerName[i]);
writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
if (!(readl(h->vaddr + SA5_DOORBELL)
& CFGTBL_ChangeReq))
break;
/* delay and try again */
udelay(1000);
}
spin_unlock_irqrestore(&h->lock, flags);
if (i >= MAX_IOCTL_CONFIG_WAIT)
return -EAGAIN;
return 0;
}
case CCISS_GETHEARTBEAT: case CCISS_GETHEARTBEAT:
{ {
Heartbeat_type heartbeat; Heartbeat_type heartbeat;