libata-acpi: improve ACPI disabling
authorTejun Heo <htejun@gmail.com>
Sat, 15 Dec 2007 06:05:04 +0000 (15:05 +0900)
committerJeff Garzik <jeff@garzik.org>
Tue, 18 Dec 2007 01:33:14 +0000 (20:33 -0500)
commit66fa7f2158e84530aa4a1839a3500d6bdb231301
tree41fb7db89a5c6e48b5ad38a35ef6538a02d42837
parent398e07826b24cbeb5ff2f0a178367fc9d24cd475
libata-acpi: improve ACPI disabling

* If _GTF evalution fails, it's pointless to retry.  If nothing else
  is wrong, just ignore the error.

* After disabling ACPI, return success iff the number of executed _GTF
  command equals zero.  Otherwise, tell EH to retry.  This change
  fixes bogus 1 return bug where ata_acpi_on_devcfg() expects the
  caller to reload IDENTIFY data and continue but the caller
  interprets it as an error.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/libata-acpi.c