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[SCSI] hpsa: factor out cmd pool allocation functions 

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Stephen M. Cameron 2011-05-03 14:59:20 -05:00 committed by James Bottomley
parent 516fda49e8
commit 2e9d1b3626
1 changed files with 36 additions and 30 deletions
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66
drivers/scsi/hpsa.c
View File

@ -3847,6 +3847,40 @@ static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev)
return 0;
}
static __devinit int hpsa_allocate_cmd_pool(struct ctlr_info *h)
{
h->cmd_pool_bits = kzalloc(
DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
sizeof(unsigned long), GFP_KERNEL);
h->cmd_pool = pci_alloc_consistent(h->pdev,
h->nr_cmds * sizeof(*h->cmd_pool),
&(h->cmd_pool_dhandle));
h->errinfo_pool = pci_alloc_consistent(h->pdev,
h->nr_cmds * sizeof(*h->errinfo_pool),
&(h->errinfo_pool_dhandle));
if ((h->cmd_pool_bits == NULL)
|| (h->cmd_pool == NULL)
|| (h->errinfo_pool == NULL)) {
dev_err(&h->pdev->dev, "out of memory in %s", __func__);
return -ENOMEM;
}
return 0;
}
static void hpsa_free_cmd_pool(struct ctlr_info *h)
{
kfree(h->cmd_pool_bits);
if (h->cmd_pool)
pci_free_consistent(h->pdev,
h->nr_cmds * sizeof(struct CommandList),
h->cmd_pool, h->cmd_pool_dhandle);
if (h->errinfo_pool)
pci_free_consistent(h->pdev,
h->nr_cmds * sizeof(struct ErrorInfo),
h->errinfo_pool,
h->errinfo_pool_dhandle);
}
static int __devinit hpsa_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
@ -3917,33 +3951,14 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev,
dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n",
h->devname, pdev->device,
h->intr[h->intr_mode], dac ? "" : " not");
h->cmd_pool_bits =
kmalloc(((h->nr_cmds + BITS_PER_LONG -
1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
h->cmd_pool = pci_alloc_consistent(h->pdev,
h->nr_cmds * sizeof(*h->cmd_pool),
&(h->cmd_pool_dhandle));
h->errinfo_pool = pci_alloc_consistent(h->pdev,
h->nr_cmds * sizeof(*h->errinfo_pool),
&(h->errinfo_pool_dhandle));
if ((h->cmd_pool_bits == NULL)
|| (h->cmd_pool == NULL)
|| (h->errinfo_pool == NULL)) {
dev_err(&pdev->dev, "out of memory");
rc = -ENOMEM;
if (hpsa_allocate_cmd_pool(h))
goto clean4;
}
if (hpsa_allocate_sg_chain_blocks(h))
goto clean4;
init_waitqueue_head(&h->scan_wait_queue);
h->scan_finished = 1; /* no scan currently in progress */
pci_set_drvdata(pdev, h);
memset(h->cmd_pool_bits, 0,
((h->nr_cmds + BITS_PER_LONG -
1) / BITS_PER_LONG) * sizeof(unsigned long));
hpsa_scsi_setup(h);
/* Turn the interrupts on so we can service requests */
@ -3957,16 +3972,7 @@ static int __devinit hpsa_init_one(struct pci_dev *pdev,
clean4:
hpsa_free_sg_chain_blocks(h);
kfree(h->cmd_pool_bits);
if (h->cmd_pool)
pci_free_consistent(h->pdev,
h->nr_cmds * sizeof(struct CommandList),
h->cmd_pool, h->cmd_pool_dhandle);
if (h->errinfo_pool)
pci_free_consistent(h->pdev,
h->nr_cmds * sizeof(struct ErrorInfo),
h->errinfo_pool,
h->errinfo_pool_dhandle);
hpsa_free_cmd_pool(h);
free_irq(h->intr[h->intr_mode], h);
clean2:
clean1: