[SCSI] aacraid: expanded expose physical device code (new)

Received from Mark Salyzyn,

Take the expose_physicals flag and allow the user to select default (physicals
available via /dev/sg), exposed (physicals available via /dev/sd for
experimental reasons) and hidden (physicals blocked from all access). This
expands the functionality of the previous expose_physicals insmod parameter
which was added to support some experimental configurations.

Signed-off-by Mark Haverkamp <markh@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 1326c0a1bdae..1feda449aedc 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -398,11 +398,15 @@ static int aac_slave_configure(struct scsi_device *sdev)
                 sdev->skip_ms_page_3f = 1;
         }
         if ((sdev->type == TYPE_DISK) &&
-                        !expose_physicals &&
                         (sdev_channel(sdev) != CONTAINER_CHANNEL)) {
-                struct aac_dev *aac = (struct aac_dev *)sdev->host->hostdata;
-                if (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))
-                        sdev->no_uld_attach = 1;
+                if (expose_physicals == 0)
+                        return -ENXIO;
+                if (expose_physicals < 0) {
+                        struct aac_dev *aac =
+                                (struct aac_dev *)sdev->host->hostdata;
+                        if (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))
+                                sdev->no_uld_attach = 1;
+                }
         }
         if (sdev->tagged_supported && (sdev->type == TYPE_DISK) &&
                         (sdev_channel(sdev) == CONTAINER_CHANNEL)) {