diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2012-03-11 11:28:46 +0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2012-04-12 23:57:51 +0400 |
| commit | 85d6725b7c0d7e3fa4261fdd4c020be4224fc9f1 (patch) | |
| tree | 359e39a0982124c9f630ff3928aaf6f75d8b7dd3 /drivers/ata/libata-scsi.c | |
| parent | 99b80e97710ae2e53c951acfdd956e9f38e36646 (diff) | |
| download | linux-85d6725b7c0d7e3fa4261fdd4c020be4224fc9f1.tar.xz | |
libata: make ata_print_id atomic
This variable is incremented from multiple contexts (module_init via
libata-lldds and the libsas discovery thread). Make it atomic to head
off any chance of libsas and libata creating duplicate ids.
Acked-by: Jacek Danecki <jacek.danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 1ee00c8b5b04..93dabdcd2cbe 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3843,7 +3843,7 @@ int ata_sas_async_port_init(struct ata_port *ap) int rc = ap->ops->port_start(ap); if (!rc) { - ap->print_id = ata_print_id++; + ap->print_id = atomic_inc_return(&ata_print_id); __ata_port_probe(ap); } @@ -3867,7 +3867,7 @@ int ata_sas_port_init(struct ata_port *ap) int rc = ap->ops->port_start(ap); if (!rc) { - ap->print_id = ata_print_id++; + ap->print_id = atomic_inc_return(&ata_print_id); rc = ata_port_probe(ap); } |