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author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2010-08-26 13:55:44 -0500 |
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committer | Jens Axboe <jaxboe@fusionio.com> | 2010-09-10 12:12:30 +0200 |
commit | 4c800eed9a46f7b6a469d24e7e6051b23e62bb69 (patch) | |
tree | 2dd28321454adc0c0d3b0af63347e25243b0d645 /drivers/block/cciss.c | |
parent | 576e661c658ab7d2a15cc12d5b8a1600db81ec0a (diff) | |
download | kernel_samsung_smdk4412-4c800eed9a46f7b6a469d24e7e6051b23e62bb69.zip kernel_samsung_smdk4412-4c800eed9a46f7b6a469d24e7e6051b23e62bb69.tar.gz kernel_samsung_smdk4412-4c800eed9a46f7b6a469d24e7e6051b23e62bb69.tar.bz2 |
cciss: factor out cciss_setintinfo
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/block/cciss.c')
-rw-r--r-- | drivers/block/cciss.c | 66 |
1 files changed, 32 insertions, 34 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index fc76140..5119c88 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -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; |