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authorTejun Heo <htejun@gmail.com>2007-11-27 19:28:59 +0900
committerJeff Garzik <jeff@garzik.org>2008-01-23 05:24:11 -0500
commit76326ac1ac1f524014ef36986fed97796b28ec6b (patch)
tree56c662db2f65303e256fedac9a26362b921d759c /crypto/arc4.c
parent00115e0f5bc3bfdf3f3855ad89c8895f10458f92 (diff)
libata: implement fast speed down for unverified data transfer mode
It's very likely that the configured data transfer mode is the wrong one if device fails data transfers right after initial data transfer mode configuration (including NCQ on/off and xfermode). libata EH needs to speed down fast before upper layers give up on probing. This patch implement fast speed down rules to handle such cases better. Error occured while data transfer hasn't been verified trigger fast back-to-back speed down actions until data transfer works. This change will make cable mis-detection and other initial configuration problems corrected before partition scanning code gives up. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'crypto/arc4.c')
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