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libata: don't check n_sectors during revalidation if zero

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If the initial configuration fails early, n_sectors is left at zero.
Checking against it during revalidation makes retried configuration
fail due to n_sectors mismatch.  Ignore zero n_sectors during
revalidation.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-08-17 18:46:51 +09:00 committed by Jeff Garzik
parent 9edbdbea00
commit b54eebd673
1 changed files with 2 additions and 1 deletions
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3
drivers/ata/libata-core.c
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@ -3700,7 +3700,8 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags)
goto fail;
/* verify n_sectors hasn't changed */
if (dev->class == ATA_DEV_ATA && dev->n_sectors != n_sectors) {
if (dev->class == ATA_DEV_ATA && n_sectors &&
dev->n_sectors != n_sectors) {
ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch "
"%llu != %llu\n",
(unsigned long long)n_sectors,