From 2e9d1b3626c4383362df30bb853a1b57c2798300 Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Tue, 3 May 2011 14:59:20 -0500 Subject: [PATCH] [SCSI] hpsa: factor out cmd pool allocation functions Signed-off-by: Stephen M. Cameron Signed-off-by: James Bottomley Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 66 +++++++++++++++++++++++++++++------------------------ 1 file changed, 36 insertions(+), 30 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 2aeb210..7336f3c 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -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: -- 2.7.4