- Remove unnecessary correction of bit and address
- Use BITS_TO_LONGS macro to calculate bitmap size
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Stephen M. Cameron <scameron@xxxxxxxxxxxxxxxxxx>
Cc: iss_storagedev@xxxxxx
Cc: "James E.J. Bottomley" <JBottomley@xxxxxxxxxxxxx>
Cc: linux-scsi@xxxxxxxxxxxxxxx
---
drivers/scsi/hpsa.c | 10 +++-------
1 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 500e20d..ddbf5fe 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -2351,9 +2351,7 @@ static struct CommandList *cmd_alloc(struct ctlr_info *h)
i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
if (i == h->nr_cmds)
return NULL;
- } while (test_and_set_bit
- (i & (BITS_PER_LONG - 1),
- h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
+ } while (test_and_set_bit(i, h->cmd_pool_bits) != 0);
c = h->cmd_pool + i;
memset(c, 0, sizeof(*c));
cmd_dma_handle = h->cmd_pool_dhandle
@@ -2420,8 +2418,7 @@ static void cmd_free(struct ctlr_info *h, struct CommandList *c)
int i;
i = c - h->cmd_pool;
- clear_bit(i & (BITS_PER_LONG - 1),
- h->cmd_pool_bits + (i / BITS_PER_LONG));
+ clear_bit(i, h->cmd_pool_bits);
h->nr_frees++;
}
@@ -4045,8 +4042,7 @@ static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev)
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) *
+ h->cmd_pool_bits = kzalloc(BITS_TO_LONGS(h->nr_cmds) *
sizeof(unsigned long), GFP_KERNEL);
h->cmd_pool = pci_alloc_consistent(h->pdev,
h->nr_cmds * sizeof(*h->cmd_pool),
--
1.7.4.4
--
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