diff options
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 48 |
1 files changed, 12 insertions, 36 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index abfb72aae3d..10bc3f64c45 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -239,8 +239,6 @@ static void ahci_freeze(struct ata_port *ap); static void ahci_thaw(struct ata_port *ap); static void ahci_pmp_attach(struct ata_port *ap); static void ahci_pmp_detach(struct ata_port *ap); -static int ahci_pmp_read(struct ata_device *dev, int pmp, int reg, u32 *r_val); -static int ahci_pmp_write(struct ata_device *dev, int pmp, int reg, u32 val); static void ahci_error_handler(struct ata_port *ap); static void ahci_vt8251_error_handler(struct ata_port *ap); static void ahci_post_internal_cmd(struct ata_queued_cmd *qc); @@ -297,8 +295,6 @@ static const struct ata_port_operations ahci_ops = { .pmp_attach = ahci_pmp_attach, .pmp_detach = ahci_pmp_detach, - .pmp_read = ahci_pmp_read, - .pmp_write = ahci_pmp_write, #ifdef CONFIG_PM .port_suspend = ahci_port_suspend, @@ -333,8 +329,6 @@ static const struct ata_port_operations ahci_vt8251_ops = { .pmp_attach = ahci_pmp_attach, .pmp_detach = ahci_pmp_detach, - .pmp_read = ahci_pmp_read, - .pmp_write = ahci_pmp_write, #ifdef CONFIG_PM .port_suspend = ahci_port_suspend, @@ -1421,12 +1415,17 @@ static void ahci_port_intr(struct ata_port *ap) struct ata_eh_info *ehi = &ap->link.eh_info; struct ahci_port_priv *pp = ap->private_data; struct ahci_host_priv *hpriv = ap->host->private_data; + int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING); u32 status, qc_active; int rc, known_irq = 0; status = readl(port_mmio + PORT_IRQ_STAT); writel(status, port_mmio + PORT_IRQ_STAT); + /* ignore BAD_PMP while resetting */ + if (unlikely(resetting)) + status &= ~PORT_IRQ_BAD_PMP; + if (unlikely(status & PORT_IRQ_ERROR)) { ahci_error_intr(ap, status); return; @@ -1464,6 +1463,13 @@ static void ahci_port_intr(struct ata_port *ap) qc_active = readl(port_mmio + PORT_CMD_ISSUE); rc = ata_qc_complete_multiple(ap, qc_active, NULL); + + /* If resetting, spurious or invalid completions are expected, + * return unconditionally. + */ + if (resetting) + return; + if (rc > 0) return; if (rc < 0) { @@ -1701,36 +1707,6 @@ static void ahci_pmp_detach(struct ata_port *ap) writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK); } -static int ahci_pmp_read(struct ata_device *dev, int pmp, int reg, u32 *r_val) -{ - struct ata_port *ap = dev->link->ap; - struct ata_taskfile tf; - int rc; - - ahci_kick_engine(ap, 0); - - sata_pmp_read_init_tf(&tf, dev, pmp, reg); - rc = ahci_exec_polled_cmd(ap, SATA_PMP_CTRL_PORT, &tf, 1, 0, - SATA_PMP_SCR_TIMEOUT); - if (rc == 0) { - ahci_tf_read(ap, &tf); - *r_val = sata_pmp_read_val(&tf); - } - return rc; -} - -static int ahci_pmp_write(struct ata_device *dev, int pmp, int reg, u32 val) -{ - struct ata_port *ap = dev->link->ap; - struct ata_taskfile tf; - - ahci_kick_engine(ap, 0); - - sata_pmp_write_init_tf(&tf, dev, pmp, reg, val); - return ahci_exec_polled_cmd(ap, SATA_PMP_CTRL_PORT, &tf, 1, 0, - SATA_PMP_SCR_TIMEOUT); -} - static int ahci_port_resume(struct ata_port *ap) { ahci_power_up(ap); |