From fd995f7039f1955ccc6b43e1e2d168060b31e4b2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sun, 23 Sep 2007 13:14:12 +0900 Subject: [PATCH] libata-pmp-prep: implement ATA_LFLAG_NO_RETRY Some PMP links are connected to internal pseudo devices which may come and go depending on situation. There's no reason to try hard to recover them. ATA_LFLAG_NO_RETRY tells EH to not retry if the device attached to the link fails. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 5 ++++- include/linux/libata.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 7be04bd30b..8f8ed4dfb1 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2335,7 +2335,10 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, struct ata_eh_context *ehc = &link->eh_context; ata_link_for_each_dev(dev, link) { - ehc->tries[dev->devno] = ATA_EH_DEV_TRIES; + if (link->flags & ATA_LFLAG_NO_RETRY) + ehc->tries[dev->devno] = 1; + else + ehc->tries[dev->devno] = ATA_EH_DEV_TRIES; /* collect port action mask recorded in dev actions */ ehc->i.action |= ehc->i.dev_action[dev->devno] & diff --git a/include/linux/libata.h b/include/linux/libata.h index 6266fffb0e..adeee7397c 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -169,6 +169,7 @@ enum { ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB, + ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */ /* struct ata_port flags */ ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ -- 2.20.1