From: Tejun Heo <htejun@gmail.com>
Date: Mon, 15 May 2006 11:58:32 +0000 (+0900)
Subject: [PATCH] sata_sil24: convert to new EH
X-Git-Tag: v2.6.18-rc1~1079^2~98^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88ce7550c38f46c8697f53727a571bf838bee398;p=pandora-kernel.git

[PATCH] sata_sil24: convert to new EH

Convert sata_sil24 to new EH.

* When port is frozen, IRQ for the port is masked.

* sil24_softreset() doesn't need to mangle with IRQ mask anymore.
  libata ensures that the port is frozen during reset.

* Only turn on interrupts which are handled by interrupt handler and
  EH.  As we don't handle SDB notify yet, turn it off. DEV_XCHG and
  UNK_FIS are handled by EH and thus turned on.

* sil24_softreset() usually fails to recover the port after DEV_XCHG.
  ATA_PORT_HARDRESET is used as recovery action for DEV_XCHG.

* sil24 may be invoked without any active command.  e.g. DEV_XCHG irq
  occuring while no qc in progress still triggers EH and will reset
  the port and revalidate attached device.

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