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cciss: factor out cciss_setintinfo 

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 13:55:44 -05:00 committed by Jens Axboe
parent 576e661c65
commit 4c800eed9a
1 changed files with 32 additions and 34 deletions
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66
drivers/block/cciss.c
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@ -1260,6 +1260,37 @@ static int cciss_getintinfo(ctlr_info_t *h, void __user *argp)
return 0;
}
static int cciss_setintinfo(ctlr_info_t *h, void __user *argp)
{
cciss_coalint_struct intinfo;
unsigned long flags;
int i;
if (!argp)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&intinfo, argp, sizeof(intinfo)))
return -EFAULT;
if ((intinfo.delay == 0) && (intinfo.count == 0))
return -EINVAL;
spin_lock_irqsave(&h->lock, flags);
/* Update the field, and then ring the doorbell */
writel(intinfo.delay, &(h->cfgtable->HostWrite.CoalIntDelay));
writel(intinfo.count, &(h->cfgtable->HostWrite.CoalIntCount));
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,
unsigned int cmd, unsigned long arg)
{
@ -1276,40 +1307,7 @@ static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
case CCISS_GETINTINFO:
return cciss_getintinfo(h, argp);
case CCISS_SETINTINFO:
{
cciss_coalint_struct intinfo;
unsigned long flags;
int i;
if (!arg)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user
(&intinfo, argp, sizeof(cciss_coalint_struct)))
return -EFAULT;
if ((intinfo.delay == 0) && (intinfo.count == 0))
return -EINVAL;
spin_lock_irqsave(&h->lock, flags);
/* Update the field, and then ring the doorbell */
writel(intinfo.delay,
&(h->cfgtable->HostWrite.CoalIntDelay));
writel(intinfo.count,
&(h->cfgtable->HostWrite.CoalIntCount));
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;
}
return cciss_setintinfo(h, argp);
case CCISS_GETNODENAME:
{
NodeName_type NodeName;