From: Bhanu Prakash Gollapudi Date: Sat, 11 Feb 2012 01:18:57 +0000 (-0800) Subject: [SCSI] libfc: Handle discovery failure during ctlr link down X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=0083208473d3d9a87dcdffaf36a2dbe718dfe282;p=deliverable%2Flinux.git [SCSI] libfc: Handle discovery failure during ctlr link down While we wait for GPN_FT response, if the ctlr link goes down, the stack generates a completion for GPN_FT with error FC_EXCH_CLOSED, and reports a discovery error. Discovery is not retried in this case, and rightly so. However, the 'pending' flag stays set, which does not allow subsequent discovery to succeed as GPN_FT will never be issued. Fix it by clearing the pending flag when the discovery fails due to GPN_FT failure. Signed-off-by: Bhanu Prakash Gollapudi Signed-off-by: Robert Love Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index 1d1b0c9da29b..8e561e6a557c 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -337,6 +337,13 @@ static void fc_disc_error(struct fc_disc *disc, struct fc_frame *fp) schedule_delayed_work(&disc->disc_work, delay); } else fc_disc_done(disc, DISC_EV_FAILED); + } else if (PTR_ERR(fp) == -FC_EX_CLOSED) { + /* + * if discovery fails due to lport reset, clear + * pending flag so that subsequent discovery can + * continue + */ + disc->pending = 0; } }