From afaa5c373d2c49ee4865847031b82f1377f609d0 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 9 Oct 2007 15:06:10 +0900 Subject: [PATCH] libata: implement ATA_PFLAG_RESETTING Implement ATA_PFLAG_RESETTING. This flag is set while reset is in progress. It's set before prereset is called and cleared after reset fails or postreset is finished. This flag itself doesn't have any function. It will be used by LLDs to tell whether reset is in progress if it needs to behave differently during reset. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 11 +++++++++++ include/linux/libata.h | 1 + 2 files changed, 12 insertions(+) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index c0e9a42e6a..1f84e40fa6 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2063,6 +2063,7 @@ int ata_eh_reset(struct ata_link *link, int classify, ata_prereset_fn_t prereset, ata_reset_fn_t softreset, ata_reset_fn_t hardreset, ata_postreset_fn_t postreset) { + struct ata_port *ap = link->ap; struct ata_eh_context *ehc = &link->eh_context; unsigned int *classes = ehc->classes; int verbose = !(ehc->i.flags & ATA_EHI_QUIET); @@ -2071,9 +2072,14 @@ int ata_eh_reset(struct ata_link *link, int classify, unsigned long deadline; unsigned int action; ata_reset_fn_t reset; + unsigned long flags; int rc; /* about to reset */ + spin_lock_irqsave(ap->lock, flags); + ap->pflags |= ATA_PFLAG_RESETTING; + spin_unlock_irqrestore(ap->lock, flags); + ata_eh_about_to_do(link, NULL, ehc->i.action & ATA_EH_RESET_MASK); /* Determine which reset to use and record in ehc->i.action. @@ -2231,6 +2237,11 @@ int ata_eh_reset(struct ata_link *link, int classify, out: /* clear hotplug flag */ ehc->i.flags &= ~ATA_EHI_HOTPLUGGED; + + spin_lock_irqsave(ap->lock, flags); + ap->pflags &= ~ATA_PFLAG_RESETTING; + spin_unlock_irqrestore(ap->lock, flags); + return rc; } diff --git a/include/linux/libata.h b/include/linux/libata.h index 751aabc21a..529af9fbed 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -210,6 +210,7 @@ enum { ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */ ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */ ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */ + ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */ ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ -- 2.39.5