[PATCH] sil24: move error handling out of hot interrupt path
04_sil24_add-error_intr-function.patch
Move error handling from sil24_host_intr into separate
function - sil24_error_intr.
Signed-off-by: Tejun Heo <htejun@gmail.com>
sata_sil24.c | 55 +++++++++++++++++++++++++++++++------------------------
1 files changed, 31 insertions(+), 24 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index c9318bd..6544226 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -480,6 +480,35 @@
sil24_reset_controller(ap);
}
+static void sil24_error_intr(struct ata_port *ap, u32 slot_stat)
+{
+ struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
+ struct sil24_port_priv *pp = ap->private_data;
+ void *port = pp->port;
+ u32 irq_stat, cmd_err, sstatus, serror;
+
+ irq_stat = readl(port + PORT_IRQ_STAT);
+ cmd_err = readl(port + PORT_CMD_ERR);
+ sstatus = readl(port + PORT_SSTATUS);
+ serror = readl(port + PORT_SERROR);
+
+ /* Clear IRQ/errors */
+ writel(irq_stat, port + PORT_IRQ_STAT);
+ if (cmd_err)
+ writel(cmd_err, port + PORT_CMD_ERR);
+ if (serror)
+ writel(serror, port + PORT_SERROR);
+
+ printk(KERN_ERR DRV_NAME " ata%u: error interrupt on port%d\n"
+ " stat=0x%x irq=0x%x cmd_err=%d sstatus=0x%x serror=0x%x\n",
+ ap->id, ap->port_no, slot_stat, irq_stat, cmd_err, sstatus, serror);
+
+ if (qc)
+ ata_qc_complete(qc, ATA_ERR);
+
+ sil24_reset_controller(ap);
+}
+
static inline void sil24_host_intr(struct ata_port *ap)
{
struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
@@ -491,30 +520,8 @@
if (!(slot_stat & HOST_SSTAT_ATTN)) {
if (qc)
ata_qc_complete(qc, 0);
- } else {
- u32 irq_stat, cmd_err, sstatus, serror;
-
- irq_stat = readl(port + PORT_IRQ_STAT);
- cmd_err = readl(port + PORT_CMD_ERR);
- sstatus = readl(port + PORT_SSTATUS);
- serror = readl(port + PORT_SERROR);
-
- /* Clear IRQ/errors */
- writel(irq_stat, port + PORT_IRQ_STAT);
- if (cmd_err)
- writel(cmd_err, port + PORT_CMD_ERR);
- if (serror)
- writel(serror, port + PORT_SERROR);
-
- printk(KERN_ERR DRV_NAME " ata%u: error interrupt on port%d\n"
- " stat=0x%x irq=0x%x cmd_err=%d sstatus=0x%x serror=0x%x\n",
- ap->id, ap->port_no, slot_stat, irq_stat, cmd_err, sstatus, serror);
-
- if (qc)
- ata_qc_complete(qc, ATA_ERR);
-
- sil24_reset_controller(ap);
- }
+ } else
+ sil24_error_intr(ap, slot_stat);
}
static irqreturn_t sil24_interrupt(int irq, void *dev_instance, struct pt_regs *regs)