diff options
| -rw-r--r-- | drivers/scsi/aacraid/commsup.c | 71 |
1 files changed, 54 insertions, 17 deletions
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 8966371ec103..5b7a4f559227 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -1874,6 +1874,39 @@ static inline int is_safw_raid_volume(struct aac_dev *aac, int bus, int target) return bus == CONTAINER_CHANNEL && target < aac->maximum_num_containers; } +static struct scsi_device *aac_lookup_safw_scsi_device(struct aac_dev *dev, + int bus, + int target) +{ + if (bus != CONTAINER_CHANNEL) + bus = aac_phys_to_logical(bus); + + return scsi_device_lookup(dev->scsi_host_ptr, bus, target, 0); +} + +static int aac_add_safw_device(struct aac_dev *dev, int bus, int target) +{ + if (bus != CONTAINER_CHANNEL) + bus = aac_phys_to_logical(bus); + + return scsi_add_device(dev->scsi_host_ptr, bus, target, 0); +} + +static void aac_put_safw_scsi_device(struct scsi_device *sdev) +{ + if (sdev) + scsi_device_put(sdev); +} + +static void aac_remove_safw_device(struct aac_dev *dev, int bus, int target) +{ + struct scsi_device *sdev; + + sdev = aac_lookup_safw_scsi_device(dev, bus, target); + scsi_remove_device(sdev); + aac_put_safw_scsi_device(sdev); +} + static inline int aac_is_safw_scan_count_equal(struct aac_dev *dev, int bus, int target) { @@ -1888,33 +1921,37 @@ static int aac_is_safw_target_valid(struct aac_dev *dev, int bus, int target) return aac_is_safw_scan_count_equal(dev, bus, target); } +static int aac_is_safw_device_exposed(struct aac_dev *dev, int bus, int target) +{ + int is_exposed = 0; + struct scsi_device *sdev; + + sdev = aac_lookup_safw_scsi_device(dev, bus, target); + if (sdev) + is_exposed = 1; + aac_put_safw_scsi_device(sdev); + + return is_exposed; +} + static void aac_resolve_luns(struct aac_dev *dev) { int i; - int bus, target, channel; - struct scsi_device *sdev; + int bus, target; + int is_exposed = 0; for (i = 0; i < AAC_BUS_TARGET_LOOP; i++) { bus = get_bus_number(i); target = get_target_number(i); - if (bus == CONTAINER_CHANNEL) - channel = CONTAINER_CHANNEL; - else - channel = aac_phys_to_logical(bus); - - sdev = scsi_device_lookup(dev->scsi_host_ptr, channel, - target, 0); - - if (!sdev && aac_is_safw_target_valid(dev, bus, target)) - scsi_add_device(dev->scsi_host_ptr, channel, - target, 0); - else if (sdev && aac_is_safw_target_valid(dev, bus, target)) - scsi_remove_device(sdev); + is_exposed = aac_is_safw_device_exposed(dev, bus, target); - if (sdev) - scsi_device_put(sdev); + if (aac_is_safw_target_valid(dev, bus, target) && !is_exposed) + aac_add_safw_device(dev, bus, target); + else if (!aac_is_safw_target_valid(dev, bus, target) && + is_exposed) + aac_remove_safw_device(dev, bus, target); } } |