tree f3f3794cd7d68c681c69e85d50345a22aecc5eac
parent 8070217d301d0ceab7d0c255d7b9d796256d37e7
author Tejun Heo <htejun@gmail.com> 1163641850 +0900
committer Tejun Heo <htejun@gmail.com> 1165136183 +0900

[PATCH] libata: implement ATA_FLAG_SETXFER_POLLING and use it in pata_via, take #2

This patch implements ATA_FLAG_SETXFER_POLLING and use in pata_via.
If this flag is set, transfer mode setting performed by polling not by
interrupt.  This should help those controllers which raise interrupt
before the command is actually complete on SETXFER.

Rationale for this approach.

* uses existing facility and relatively simple
* no busy sleep in the interrupt handler
* updating drivers is easy

While at it, kill now unused flag ATA_FLAG_SRST in pata_via.

Signed-off-by: Tejun Heo <htejun@gmail.com>