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cciss: factor out cciss_board_disabled 

cciss: factor out cciss_board_disabled

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 2010-07-19 13:45:00 -05:00 committed by Jens Axboe
parent 6539fa9b2e
commit dd9c426e92
1 changed files with 9 additions and 6 deletions
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15
drivers/block/cciss.c
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@ -4002,9 +4002,16 @@ static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
return -ENODEV; return -ENODEV;
} }
static inline bool cciss_board_disabled(ctlr_info_t *h)
{
u16 command;
(void) pci_read_config_word(h->pdev, PCI_COMMAND, &command);
return ((command & PCI_COMMAND_MEMORY) == 0);
}
static int __devinit cciss_pci_init(ctlr_info_t *c) static int __devinit cciss_pci_init(ctlr_info_t *c)
{ {
ushort command;
__u32 scratchpad = 0; __u32 scratchpad = 0;
__u64 cfg_offset; __u64 cfg_offset;
__u32 cfg_base_addr; __u32 cfg_base_addr;
@ -4018,15 +4025,11 @@ static int __devinit cciss_pci_init(ctlr_info_t *c)
c->product_name = products[prod_index].product_name; c->product_name = products[prod_index].product_name;
c->access = *(products[prod_index].access); c->access = *(products[prod_index].access);
/* check to see if controller has been disabled */ if (cciss_board_disabled(c)) {
/* BEFORE trying to enable it */
(void)pci_read_config_word(c->pdev, PCI_COMMAND, &command);
if (!(command & 0x02)) {
printk(KERN_WARNING printk(KERN_WARNING
"cciss: controller appears to be disabled\n"); "cciss: controller appears to be disabled\n");
return -ENODEV; return -ENODEV;
} }
err = pci_enable_device(c->pdev); err = pci_enable_device(c->pdev);
if (err) { if (err) {
printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); printk(KERN_ERR "cciss: Unable to Enable PCI device\n");