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[libata] add timeout to commands for which we call wait_completion()

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This commit is contained in:
Jeff Garzik 2005-11-17 10:50:01 -05:00
parent 556c66db07
commit 64f043d807
1 changed files with 28 additions and 4 deletions
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32
drivers/scsi/libata-core.c
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@ -1046,6 +1046,30 @@ static unsigned int ata_pio_modes(const struct ata_device *adev)
return modes;
}
static int ata_qc_wait_err(struct ata_queued_cmd *qc,
struct completion *wait)
{
int rc = 0;
if (wait_for_completion_timeout(wait, 30 * HZ) < 1) {
/* timeout handling */
unsigned int err_mask = ac_err_mask(ata_chk_status(qc->ap));
if (!err_mask) {
printk(KERN_WARNING "ata%u: slow completion (cmd %x)\n",
qc->ap->id, qc->tf.command);
} else {
printk(KERN_WARNING "ata%u: qc timeout (cmd %x)\n",
qc->ap->id, qc->tf.command);
rc = -EIO;
}
ata_qc_complete(qc, err_mask);
}
return rc;
}
/**
* ata_dev_identify - obtain IDENTIFY x DEVICE page
* @ap: port on which device we wish to probe resides
@ -1125,7 +1149,7 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device)
if (rc)
goto err_out;
else
wait_for_completion(&wait);
ata_qc_wait_err(qc, &wait);
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->ops->tf_read(ap, &qc->tf);
@ -2269,7 +2293,7 @@ static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
if (rc)
ata_port_disable(ap);
else
wait_for_completion(&wait);
ata_qc_wait_err(qc, &wait);
DPRINTK("EXIT\n");
}
@ -2317,7 +2341,7 @@ static void ata_dev_reread_id(struct ata_port *ap, struct ata_device *dev)
if (rc)
goto err_out;
wait_for_completion(&wait);
ata_qc_wait_err(qc, &wait);
swap_buf_le16(dev->id, ATA_ID_WORDS);
@ -2373,7 +2397,7 @@ static void ata_dev_init_params(struct ata_port *ap, struct ata_device *dev)
if (rc)
ata_port_disable(ap);
else
wait_for_completion(&wait);
ata_qc_wait_err(qc, &wait);
DPRINTK("EXIT\n");
}