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authorTejun Heo <htejun@gmail.com>2006-11-10 18:08:10 +0900
committerJeff Garzik <jeff@garzik.org>2006-12-01 22:45:55 -0500
commit228c1590be39872022006ab81fda112a4f35ce47 (patch)
tree1a4f1e55feb1eb957819145db702f6789a94b5d5 /lib/percpu_counter.c
parent55a8e2c83ce50548dfef74bb19dfe2b809cb3099 (diff)
[PATCH] ata_piix: apply device detection via polling IDENTIFY
PATA PIIX uses reset signature + TF r/w test for device presence detection, which doesn't always work. It sometimes reports phantom device which results in IDENTIFY timeouts. SATA PIIX uses some combination of PCS + reset signature + TF r/w test for device presence detection. No combination satifies all and for some controllers, there doesn't seem to be any combination which works reliably. This patch makes both PATA and SATA piix's use reset signature + TF r/w + polling IDENTIFY for device detection. This is what the old libata (before irq-pio and new EH) did and what IDE does. This patch also removes now obsolete PIIX_FLAG_IGNORE_PCS, force_pcs and related code. Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'lib/percpu_counter.c')
0 files changed, 0 insertions, 0 deletions