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| author | Tejun Heo <htejun@gmail.com> | 2006-11-01 18:39:27 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-12-01 22:41:31 -0500 |
| commit | baa1e78a834c917984a4659fd282f712c17ee3bf (patch) | |
| tree | 6c8035d6d49752f7ea81696fa6e61c424b29589c /include | |
| parent | efdaedc443e935eda82e9e78a6e65d1f993d242f (diff) | |
| download | op-kernel-dev-baa1e78a834c917984a4659fd282f712c17ee3bf.zip op-kernel-dev-baa1e78a834c917984a4659fd282f712c17ee3bf.tar.gz | |
[PATCH] libata: implement ATA_EHI_SETMODE and ATA_EHI_POST_SETMODE
libata EH used to perform ata_set_mode() iff the EH session performed
reset as indicated by ATA_EHI_DID_RESET. This is incorrect because
->dev_config() called by revalidation is allowed to modify transfer
mode which ata_set_mode() should take care of. This patch implements
the following two flags.
* ATA_EHI_SETMODE: set during EH to schedule ata_set_mode(). Both new
device attachment and revalidation set this flag.
* ATA_EHI_POST_SETMODE: set while the device is revalidated after
ata_set_mode(). Post-setmode revalidation is different from initial
configuaration and EH revalidation in that ->dev_config() is not
allowed tune transfer mode. LLD can use this flag to determine
whether it's allowed to tune transfer mode. Note that POST_SETMODE
->dev_config() is guaranteed to be preceded by non-POST_SETMODE
->dev_config().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/libata.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 9494846..0d0ddea 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -284,6 +284,8 @@ enum { ATA_EHI_DID_RESET = (1 << 16), /* already reset this port */ ATA_EHI_PRINTINFO = (1 << 17), /* print configuration info */ + ATA_EHI_SETMODE = (1 << 18), /* configure transfer mode */ + ATA_EHI_POST_SETMODE = (1 << 19), /* revaildating after setmode */ ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK, |
