diff options
| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2012-05-01 16:43:01 (GMT) |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-05-10 08:15:46 (GMT) |
| commit | 1d94f94d89848762306b4a8bd5e658c11828ab12 (patch) | |
| tree | edcbf9e84b73b6853ed8f0790a1ebc0e504f81fe /drivers/scsi | |
| parent | 6cba3f1972de14421ef4cf4b46a15cc5d604e791 (diff) | |
| download | linux-fsl-qoriq-1d94f94d89848762306b4a8bd5e658c11828ab12.tar.xz | |
[SCSI] hpsa: factor out tail calls to next_command() in process_(non)indexed_cmd()
This is in order to smooth the way for upcoming changes to allow use of
multiple reply queues for command completions.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Matt Gates <matthew.gates@hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/hpsa.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 87f8a1b..bf5ed87 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -3379,22 +3379,21 @@ static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag) } /* process completion of an indexed ("direct lookup") command */ -static inline u32 process_indexed_cmd(struct ctlr_info *h, +static inline void process_indexed_cmd(struct ctlr_info *h, u32 raw_tag) { u32 tag_index; struct CommandList *c; tag_index = hpsa_tag_to_index(raw_tag); - if (bad_tag(h, tag_index, raw_tag)) - return next_command(h); - c = h->cmd_pool + tag_index; - finish_cmd(c); - return next_command(h); + if (!bad_tag(h, tag_index, raw_tag)) { + c = h->cmd_pool + tag_index; + finish_cmd(c); + } } /* process completion of a non-indexed command */ -static inline u32 process_nonindexed_cmd(struct ctlr_info *h, +static inline void process_nonindexed_cmd(struct ctlr_info *h, u32 raw_tag) { u32 tag; @@ -3404,11 +3403,10 @@ static inline u32 process_nonindexed_cmd(struct ctlr_info *h, list_for_each_entry(c, &h->cmpQ, list) { if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) { finish_cmd(c); - return next_command(h); + return; } } bad_tag(h, h->nr_cmds + 1, raw_tag); - return next_command(h); } /* Some controllers, like p400, will give us one interrupt @@ -3483,10 +3481,11 @@ static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id) while (interrupt_pending(h)) { raw_tag = get_next_completion(h); while (raw_tag != FIFO_EMPTY) { - if (hpsa_tag_contains_index(raw_tag)) - raw_tag = process_indexed_cmd(h, raw_tag); + if (likely(hpsa_tag_contains_index(raw_tag))) + process_indexed_cmd(h, raw_tag); else - raw_tag = process_nonindexed_cmd(h, raw_tag); + process_nonindexed_cmd(h, raw_tag); + raw_tag = next_command(h); } } spin_unlock_irqrestore(&h->lock, flags); @@ -3503,10 +3502,11 @@ static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id) h->last_intr_timestamp = get_jiffies_64(); raw_tag = get_next_completion(h); while (raw_tag != FIFO_EMPTY) { - if (hpsa_tag_contains_index(raw_tag)) - raw_tag = process_indexed_cmd(h, raw_tag); + if (likely(hpsa_tag_contains_index(raw_tag))) + process_indexed_cmd(h, raw_tag); else - raw_tag = process_nonindexed_cmd(h, raw_tag); + process_nonindexed_cmd(h, raw_tag); + raw_tag = next_command(h); } spin_unlock_irqrestore(&h->lock, flags); return IRQ_HANDLED; |