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scsi: bfa: Do not dereference port before it is null checked 

Port is deferenced before it is null sanity checked, hence we
potentially have a null pointer dereference bug. Instead, initialise
trl_enabled from port->fcs->bfa after we are sure port is not null.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Colin Ian King 2016-08-30 17:36:16 +01:00 committed by Martin K. Petersen
parent 02ccda2a2f
commit 5f6ac2cee2
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/bfa/bfa_fcs_lport.c
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@ -5827,13 +5827,13 @@ bfa_fcs_lport_get_rport_max_speed(bfa_fcs_lport_t *port)
bfa_port_speed_t max_speed = 0;
struct bfa_port_attr_s port_attr;
bfa_port_speed_t port_speed, rport_speed;
bfa_boolean_t trl_enabled = bfa_fcport_is_ratelim(port->fcs->bfa);
bfa_boolean_t trl_enabled;
if (port == NULL)
return 0;
fcs = port->fcs;
trl_enabled = bfa_fcport_is_ratelim(port->fcs->bfa);
/* Get Physical port's current speed */
bfa_fcport_get_attr(port->fcs->bfa, &port_attr);