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authorStephen M. Cameron <scameron@beardog.cce.hp.com>2010-07-19 13:45:41 -0500
committerJens Axboe <jaxboe@fusionio.com>2010-08-07 18:52:11 +0200
commit322e304c4d71b79b3950ca560db4868cc3e04ee6 (patch)
tree6e49b3739233490a5023b9d99814b047677e9375
parent501b92cd6b394ba56bb978fd55606b5639b4d3fb (diff)
cciss: factor out cciss_enable_scsi_prefetch()
cciss: factor out cciss_enable_scsi_prefetch() Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
-rw-r--r--drivers/block/cciss.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 9a4869572a0..b4264bcda61 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4108,6 +4108,18 @@ static inline bool CISS_signature_present(ctlr_info_t *h)
return true;
}
+/* Need to enable prefetch in the SCSI core for 6400 in x86 */
+static inline void cciss_enable_scsi_prefetch(ctlr_info_t *h)
+{
+#ifdef CONFIG_X86
+ u32 prefetch;
+
+ prefetch = readl(&(h->cfgtable->SCSI_Prefetch));
+ prefetch |= 0x100;
+ writel(prefetch, &(h->cfgtable->SCSI_Prefetch));
+#endif
+}
+
static int __devinit cciss_pci_init(ctlr_info_t *c)
{
int prod_index, err;
@@ -4169,16 +4181,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *c)
err = -ENODEV;
goto err_out_free_res;
}
-#ifdef CONFIG_X86
- {
- /* Need to enable prefetch in the SCSI core for 6400 in x86 */
- __u32 prefetch;
- prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
- prefetch |= 0x100;
- writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
- }
-#endif
-
+ cciss_enable_scsi_prefetch(c);
/* Disabling DMA prefetch and refetch for the P600.
* An ASIC bug may result in accesses to invalid memory addresses.
* We've disabled prefetch for some time now. Testing with XEN