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[SCSI] libfc: don't do discovery before callback is set

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It's possible to "restart" discovery before it was started if
an RSCN is received early enough.  We were jumping to 0
due to the disc_callback function pointer not getting set.

Don't restart discovery if disc_callback is NULL.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Joe Eykholt 2009-08-25 14:02:54 -07:00 committed by James Bottomley
parent 29d898e909
commit 935d0fce44
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/libfc/fc_disc.c
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@ -219,6 +219,9 @@ static void fc_disc_recv_req(struct fc_seq *sp, struct fc_frame *fp,
*/
static void fc_disc_restart(struct fc_disc *disc)
{
if (!disc->disc_callback)
return;
FC_DISC_DBG(disc, "Restarting discovery\n");
disc->requested = 1;