[PATCH] libata: implement per-dev EH action mask eh_info->dev_action[]
Currently, the only per-dev EH action is REVALIDATE. EH used to
exploit ehi->dev to do selective revalidation on a ATA bus. However,
this is a bit hacky and makes it impossible to request selective
revalidation from outside of EH or add another per-dev EH action.
This patch adds per-dev EH action mask eh_info->dev_action[] and
update EH to use this field for REVALIDATE. Note that per-dev actions
can still be specified at port-level and it has the same effect of
specifying the action for all devices on the port.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/include/linux/libata.h b/include/linux/libata.h
index f03b866..6b3c3af 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -249,6 +249,7 @@
ATA_EH_HARDRESET = (1 << 2),
ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
+ ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE,
/* ata_eh_info->flags */
ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
@@ -462,6 +463,7 @@
u32 serror; /* SError from LLDD */
unsigned int err_mask; /* port-wide err_mask */
unsigned int action; /* ATA_EH_* action mask */
+ unsigned int dev_action[ATA_MAX_DEVICES]; /* dev EH action */
unsigned int flags; /* ATA_EHI_* flags */
unsigned long hotplug_timestamp;