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[PATCH] libata: make the owner of a qc responsible for freeing it

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qc used to be freed automatically on command completion.  However, as
a qc can carry information about its completion status, it can be
useful to its owner/issuer after command completion.  This patch makes
freeing qc responsibility of its owner.  This simplifies
ata_exec_internal() and makes command turn-around for atapi request
sensing less hackish.

This change was originally suggested by Jeff Garzik.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Tejun Heo 2006-01-23 13:09:36 +09:00 • committed by Jeff Garzik
commit 77853bf2b4
3 changed files with 21 additions and 42 deletions
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2
include/linux/libata.h
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@ -235,7 +235,7 @@ struct ata_port;
struct ata_queued_cmd;
/* typedefs */
typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
struct ata_ioports {
unsigned long cmd_addr;