Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

[sfrench/cifs-2.6.git] / drivers / scsi / scsi_scan.c

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 662577fbe7a87ddd93a66e37e66bbedbeb64e73d..a86e62f4b3ba86b934cdaaecc7f7213d1ef45d68 100644 (file)
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -703,16 +703,14 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
 
 /**
  * scsi_add_lun - allocate and fully initialze a scsi_device
- * @sdevscan:  holds information to be stored in the new scsi_device
- * @sdevnew:   store the address of the newly allocated scsi_device
+ * @sdev:      holds information to be stored in the new scsi_device
  * @inq_result:        holds the result of a previous INQUIRY to the LUN
  * @bflags:    black/white list flag
+ * @async:     1 if this device is being scanned asynchronously
  *
  * Description:
- *     Allocate and initialize a scsi_device matching sdevscan. Optionally
- *     set fields based on values in *@bflags. If @sdevnew is not
- *     NULL, store the address of the new scsi_device in *@sdevnew (needed
- *     when scanning a particular LUN).
+ *     Initialize the scsi_device @sdev.  Optionally set fields based
+ *     on values in *@bflags.
  *
  * Return:
  *     SCSI_SCAN_NO_RESPONSE: could not allocate or setup a scsi_device
@@ -752,25 +750,15 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
        sdev->rev = (char *) (sdev->inquiry + 32);
 
        if (*bflags & BLIST_ISROM) {
-               /*
-                * It would be better to modify sdev->type, and set
-                * sdev->removable; this can now be done since
-                * print_inquiry has gone away.
-                */
-               inq_result[0] = TYPE_ROM;
-               inq_result[1] |= 0x80;  /* removable */
-       } else if (*bflags & BLIST_NO_ULD_ATTACH)
-               sdev->no_uld_attach = 1;
+               sdev->type = TYPE_ROM;
+               sdev->removable = 1;
+       } else {
+               sdev->type = (inq_result[0] & 0x1f);
+               sdev->removable = (inq_result[1] & 0x80) >> 7;
+       }
 
-       switch (sdev->type = (inq_result[0] & 0x1f)) {
+       switch (sdev->type) {
        case TYPE_RBC:
-               /* RBC devices can return SCSI-3 compliance and yet
-                * still not support REPORT LUNS, so make them act as
-                * BLIST_NOREPORTLUN unless BLIST_REPORTLUN2 is
-                * specifically set */
-               if ((*bflags & BLIST_REPORTLUN2) == 0)
-                       *bflags |= BLIST_NOREPORTLUN;
-               /* fall through */
        case TYPE_TAPE:
        case TYPE_DISK:
        case TYPE_PRINTER:
@@ -784,13 +772,6 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
                sdev->writeable = 1;
                break;
        case TYPE_ROM:
-               /* MMC devices can return SCSI-3 compliance and yet
-                * still not support REPORT LUNS, so make them act as
-                * BLIST_NOREPORTLUN unless BLIST_REPORTLUN2 is
-                * specifically set */
-               if ((*bflags & BLIST_REPORTLUN2) == 0)
-                       *bflags |= BLIST_NOREPORTLUN;
-               /* fall through */
        case TYPE_WORM:
                sdev->writeable = 0;
                break;
@@ -798,6 +779,15 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
                printk(KERN_INFO "scsi: unknown device type %d\n", sdev->type);
        }
 
+       if (sdev->type == TYPE_RBC || sdev->type == TYPE_ROM) {
+               /* RBC and MMC devices can return SCSI-3 compliance and yet
+                * still not support REPORT LUNS, so make them act as
+                * BLIST_NOREPORTLUN unless BLIST_REPORTLUN2 is
+                * specifically set */
+               if ((*bflags & BLIST_REPORTLUN2) == 0)
+                       *bflags |= BLIST_NOREPORTLUN;
+       }
+
        /*
         * For a peripheral qualifier (PQ) value of 1 (001b), the SCSI
         * spec says: The device server is capable of supporting the
@@ -815,12 +805,11 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
         */ 
 
        sdev->inq_periph_qual = (inq_result[0] >> 5) & 7;
-       sdev->removable = (0x80 & inq_result[1]) >> 7;
        sdev->lockable = sdev->removable;
        sdev->soft_reset = (inq_result[7] & 1) && ((inq_result[3] & 7) == 2);
 
-       if (sdev->scsi_level >= SCSI_3 || (sdev->inquiry_len > 56 &&
-               inq_result[56] & 0x04))
+       if (sdev->scsi_level >= SCSI_3 ||
+                       (sdev->inquiry_len > 56 && inq_result[56] & 0x04))
                sdev->ppr = 1;
        if (inq_result[7] & 0x60)
                sdev->wdtr = 1;
@@ -833,13 +822,10 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
                        sdev->inq_periph_qual, inq_result[2] & 0x07,
                        (inq_result[3] & 0x0f) == 1 ? " CCS" : "");
 
-       /*
-        * End sysfs code.
-        */
-
        if ((sdev->scsi_level >= SCSI_2) && (inq_result[7] & 2) &&
            !(*bflags & BLIST_NOTQ))
                sdev->tagged_supported = 1;
+
        /*
         * Some devices (Texel CD ROM drives) have handshaking problems
         * when used with the Seagate controllers. borken is initialized
@@ -848,6 +834,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
        if ((*bflags & BLIST_BORKEN) == 0)
                sdev->borken = 0;
 
+       if (*bflags & BLIST_NO_ULD_ATTACH)
+               sdev->no_uld_attach = 1;
+
        /*
         * Apparently some really broken devices (contrary to the SCSI
         * standards) need to be selected without asserting ATN
@@ -872,7 +861,6 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
        if (*bflags & BLIST_SINGLELUN)
                sdev->single_lun = 1;
 
-
        sdev->use_10_for_rw = 1;
 
        if (*bflags & BLIST_MS_SKIP_PAGE_08)
@@ -1213,7 +1201,7 @@ static void scsi_sequential_lun_scan(struct scsi_target *starget,
  *     Given a struct scsi_lun of: 0a 04 0b 03 00 00 00 00, this function returns
  *     the integer: 0x0b030a04
  **/
-static int scsilun_to_int(struct scsi_lun *scsilun)
+int scsilun_to_int(struct scsi_lun *scsilun)
 {
        int i;
        unsigned int lun;
@@ -1224,6 +1212,7 @@ static int scsilun_to_int(struct scsi_lun *scsilun)
                              scsilun->scsi_lun[i + 1]) << (i * 8));
        return lun;
 }
+EXPORT_SYMBOL(scsilun_to_int);
 
 /**
  * int_to_scsilun: reverts an int into a scsi_lun