diff options
| author | Vasu Dev <vasu.dev@intel.com> | 2011-10-28 11:34:12 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-10-31 13:26:44 +0400 |
| commit | 14fc315fa30d128760c7edeff56530142576cd2e (patch) | |
| tree | afedc80340cff48207180675f64b956fbc8940ff /drivers/scsi | |
| parent | 044aceef33bba7a471a3ed47ac60998b2983b18b (diff) | |
| download | linux-14fc315fa30d128760c7edeff56530142576cd2e.tar.gz linux-14fc315fa30d128760c7edeff56530142576cd2e.tar.bz2 linux-14fc315fa30d128760c7edeff56530142576cd2e.zip | |
[SCSI] libfc: fix checking FC_TYPE_BLS
Its checked after skb freed, so instead have fh_type
cached and then check FC_TYPE_BLS against cached
fh_type value.
This wrong check was causing double exch locking as
reported by Bhanu at
https://lists.open-fcoe.org/pipermail/devel/2011-October/011793.html
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Tested-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/libfc/fc_exch.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c index 7c055fdca45d..81235f36adc1 100644 --- a/drivers/scsi/libfc/fc_exch.c +++ b/drivers/scsi/libfc/fc_exch.c @@ -469,6 +469,7 @@ static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame_header *fh = fc_frame_header_get(fp); int error; u32 f_ctl; + u8 fh_type = fh->fh_type; ep = fc_seq_exch(sp); WARN_ON((ep->esb_stat & ESB_ST_SEQ_INIT) != ESB_ST_SEQ_INIT); @@ -493,7 +494,7 @@ static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, */ error = lport->tt.frame_send(lport, fp); - if (fh->fh_type == FC_TYPE_BLS) + if (fh_type == FC_TYPE_BLS) return error; /* |