[PATCH 0/3] aic79xx: fix deadlock & cleanup

[PATCH 0/3] aic79xx: fix deadlock & cleanup

[Hannes Reinecke]

Hi all,

this patchset cleans up the aic79xx drivers.
- Convert qfrozen count to atomic_t type.
  The qfrozen count is the low-level equivalent to the scsi-ml
  scsi_block_requests. Converting it to atomic_t gets rid of
  the ahd_lock / ahd_unlock and thereby removes some deadlocks
  in the recovery code.
- use scsi-ml tcq functions.
  SCSI-Ml already provides some tcq funtions, so we might as well
  use them.
- remove dead code
  Removing some dead code which have been left over.

The first patch should fix the deadlocks people were seeing during
recovery. Emmanuel, could you test them whether your problem is resolved
(and ignoring the 'overlapped command error handling', as this patchset
replaces it).

Cheers,

Hannes
-- 
Dr. Hannes Reinecke			hare@suse.de
SuSE Linux Products GmbH		S390 & zSeries
Maxfeldstraße 5				+49 911 74053 688
90409 Nürnberg				http://www.suse.de

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