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libata: drop @finish_qc from ata_qc_complete_multiple() 

ata_qc_complete_multiple() took @finish_qc and called it on every qc
before completing it.  This was to give opportunity to update TF cache
before ata_qc_complete() tries to fill result_tf.  Now that result TF
is a separate operation, this is no longer necessary.

Update sata_sil24, which was the only user of this mechanism, such
that it implements its own ops->qc_fill_rtf() and drop @finish_qc from
ata_qc_complete_multiple().

Signed-off-by: Tejun Heo <htejun@gmail.com>
This commit is contained in:
Tejun Heo 2008-04-07 22:47:20 +09:00 committed by Jeff Garzik
parent 22183bf569
commit 79f97dadfe
4 changed files with 12 additions and 18 deletions
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2
drivers/ata/ahci.c
View File

@ -1696,7 +1696,7 @@ static void ahci_port_intr(struct ata_port *ap)
else
qc_active = readl(port_mmio + PORT_CMD_ISSUE);
rc = ata_qc_complete_multiple(ap, qc_active, NULL);
rc = ata_qc_complete_multiple(ap, qc_active);
/* while resetting, invalid completions are expected */
if (unlikely(rc < 0 && !resetting)) {

6
drivers/ata/libata-core.c
View File

@ -4673,7 +4673,6 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
* ata_qc_complete_multiple - Complete multiple qcs successfully
* @ap: port in question
* @qc_active: new qc_active mask
* @finish_qc: LLDD callback invoked before completing a qc
*
* Complete in-flight commands. This functions is meant to be
* called from low-level driver's interrupt routine to complete
@ -4686,8 +4685,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
* RETURNS:
* Number of completed commands on success, -errno otherwise.
*/
int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
void (*finish_qc)(struct ata_queued_cmd *))
int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active)
{
int nr_done = 0;
u32 done_mask;
@ -4708,8 +4706,6 @@ int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
continue;
if ((qc = ata_qc_from_tag(ap, i))) {
if (finish_qc)
finish_qc(qc);
ata_qc_complete(qc);
nr_done++;
}

19
drivers/ata/sata_sil24.c
View File

@ -348,6 +348,7 @@ static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
static int sil24_qc_defer(struct ata_queued_cmd *qc);
static void sil24_qc_prep(struct ata_queued_cmd *qc);
static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc);
static bool sil24_qc_fill_rtf(struct ata_queued_cmd *qc);
static void sil24_pmp_attach(struct ata_port *ap);
static void sil24_pmp_detach(struct ata_port *ap);
static void sil24_freeze(struct ata_port *ap);
@ -407,6 +408,7 @@ static struct ata_port_operations sil24_ops = {
.qc_defer = sil24_qc_defer,
.qc_prep = sil24_qc_prep,
.qc_issue = sil24_qc_issue,
.qc_fill_rtf = sil24_qc_fill_rtf,
.freeze = sil24_freeze,
.thaw = sil24_thaw,
@ -914,6 +916,12 @@ static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc)
return 0;
}
static bool sil24_qc_fill_rtf(struct ata_queued_cmd *qc)
{
sil24_read_tf(qc->ap, qc->tag, &qc->result_tf);
return true;
}
static void sil24_pmp_attach(struct ata_port *ap)
{
sil24_config_pmp(ap, 1);
@ -1098,15 +1106,6 @@ static void sil24_error_intr(struct ata_port *ap)
}
}
static void sil24_finish_qc(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct sil24_port_priv *pp = ap->private_data;
if (qc->flags & ATA_QCFLAG_RESULT_TF)
sil24_read_tf(ap, qc->tag, &pp->tf);
}
static inline void sil24_host_intr(struct ata_port *ap)
{
void __iomem *port = ap->ioaddr.cmd_addr;
@ -1131,7 +1130,7 @@ static inline void sil24_host_intr(struct ata_port *ap)
}
qc_active = slot_stat & ~HOST_SSTAT_ATTN;
rc = ata_qc_complete_multiple(ap, qc_active, sil24_finish_qc);
rc = ata_qc_complete_multiple(ap, qc_active);
if (rc > 0)
return;
if (rc < 0) {

3
include/linux/libata.h
View File

@ -924,8 +924,7 @@ extern void ata_id_string(const u16 *id, unsigned char *s,
extern void ata_id_c_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len);
extern void ata_qc_complete(struct ata_queued_cmd *qc);
extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
void (*finish_qc)(struct ata_queued_cmd *));
extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *));
extern int ata_std_bios_param(struct scsi_device *sdev,