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authorTejun Heo <htejun@gmail.com>2006-07-10 14:18:46 (GMT)
committerJeff Garzik <jeff@garzik.org>2006-07-19 18:06:53 (GMT)
commit13abf50df209008b5d44075bafeeab42ace56aa6 (patch)
tree5e8ea48d61c7e58560b04d33609a4a2bc6cf0012 /include
parent7c8c2cff81b2b7f6dd3f9fd7b77033c1be5d7920 (diff)
[PATCH] libata: improve EH action and EHI flag handling
Update ata_eh_about_to_do() and ata_eh_done() to improve EH action and EHI flag handling. * There are two types of EHI flags - one which expires on successful EH and the other which expires on a successful reset. Make this distinction clear. * Unlike other EH actions, reset actions are represented by two EH action masks and a EHI modifier. Implement correct about_to_do/done semantics for resets. That is, prior to reset, related EH info is sucked in from ehi and cleared, and after reset is complete, related EH info in ehc is cleared. These changes improve consistency and remove unnecessary EH actions caused by stale EH action masks and EHI flags. 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.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 6cc497a..66c3100 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -265,12 +265,14 @@ enum {
/* ata_eh_info->flags */
ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
- ATA_EHI_RESUME_LINK = (1 << 1), /* need to resume link */
+ ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */
ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
ATA_EHI_QUIET = (1 << 3), /* be quiet */
ATA_EHI_DID_RESET = (1 << 16), /* already reset this port */
+ ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK,
+
/* max repeat if error condition is still set after ->error_handler */
ATA_EH_MAX_REPEAT = 5,

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