[PATCH] libata-dev: fix the device err check sequence (respin)

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Current irq-pio checks ERR bit and stops on ERR before it does anything else.
This behavior doesn't look right.
The DRQ bit should take higher precedence than the ERR bit.

Changes:
- Let the HSM do the data transfer whenever the
  device asks for DRQ bit, even if the ERR bit is set.
- For DRQ=1 ERR=1, don't trust the data

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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Albert Lee 2006-03-25 18:11:12 +08:00 • committed by Jeff Garzik

parent 999bb6f426

commit 71601958f7

1 changed files with 38 additions and 6 deletions

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drivers/scsi/libata-core.c

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