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| author | Mark Lord <liml@rtr.ca> | 2007-11-07 10:52:55 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-11-08 13:08:41 -0500 |
| commit | 12ee7d3ceb08e9ab99a6c17c5c6a387645a32658 (patch) | |
| tree | 5a67ff8aa4f46a9fd82dec3d738fe13ce9e86e37 /drivers/ata/sata_qstor.c | |
| parent | 647c595dadb20d2c46e18bbd8d2a11e32f2a46e1 (diff) | |
| download | linux-12ee7d3ceb08e9ab99a6c17c5c6a387645a32658.tar.bz2 | |
libata sata_qstor nuke idle state
sata_qstor nuke idle state.
We're really only ever in one of two hardware states: packet, or mmio.
Get rid of unnecessary "qs_state_idle" state.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/sata_qstor.c')
| -rw-r--r-- | drivers/ata/sata_qstor.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c index 6d43ba79e154..9d3128ca3443 100644 --- a/drivers/ata/sata_qstor.c +++ b/drivers/ata/sata_qstor.c @@ -103,7 +103,7 @@ enum { QS_DMA_BOUNDARY = ~0UL }; -typedef enum { qs_state_idle, qs_state_pkt, qs_state_mmio } qs_state_t; +typedef enum { qs_state_mmio, qs_state_pkt } qs_state_t; struct qs_port_priv { u8 *pkt; @@ -219,7 +219,9 @@ static void qs_irq_clear(struct ata_port *ap) static inline void qs_enter_reg_mode(struct ata_port *ap) { u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); + struct qs_port_priv *pp = ap->private_data; + pp->state = qs_state_mmio; writeb(QS_CTR0_REG, chan + QS_CCT_CTR0); readb(chan + QS_CCT_CTR0); /* flush */ } @@ -235,19 +237,12 @@ static inline void qs_reset_channel_logic(struct ata_port *ap) static void qs_phy_reset(struct ata_port *ap) { - struct qs_port_priv *pp = ap->private_data; - - pp->state = qs_state_idle; qs_reset_channel_logic(ap); sata_phy_reset(ap); } static void qs_eng_timeout(struct ata_port *ap) { - struct qs_port_priv *pp = ap->private_data; - - if (pp->state != qs_state_idle) /* healthy paranoia */ - pp->state = qs_state_mmio; qs_reset_channel_logic(ap); ata_eng_timeout(ap); } @@ -406,7 +401,6 @@ static inline unsigned int qs_intr_pkt(struct ata_host *host) switch (sHST) { case 0: /* successful CPB */ case 3: /* device error */ - pp->state = qs_state_idle; qs_enter_reg_mode(qc->ap); qc->err_mask |= ac_err_mask(sDST); ata_qc_complete(qc); @@ -445,7 +439,6 @@ static inline unsigned int qs_intr_mmio(struct ata_host *host) ap->print_id, qc->tf.protocol, status); /* complete taskfile transaction */ - pp->state = qs_state_idle; qc->err_mask |= ac_err_mask(status); ata_qc_complete(qc); handled = 1; @@ -501,7 +494,6 @@ static int qs_port_start(struct ata_port *ap) rc = ata_port_start(ap); if (rc) return rc; - qs_enter_reg_mode(ap); pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); if (!pp) return -ENOMEM; @@ -512,6 +504,7 @@ static int qs_port_start(struct ata_port *ap) memset(pp->pkt, 0, QS_PKT_BYTES); ap->private_data = pp; + qs_enter_reg_mode(ap); addr = (u64)pp->pkt_dma; writel((u32) addr, chan + QS_CCF_CPBA); writel((u32)(addr >> 32), chan + QS_CCF_CPBA + 4); |