1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 8d78084abf9f..2a42b862aa9f 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -59,6 +59,13 @@
 #include "transport.h"
 #include "protocol.h"
 
+/* Vendor IDs for companies that seem to include the READ CAPACITY bug
+ * in all their devices
+ */
+#define VENDOR_ID_NOKIA         0x0421
+#define VENDOR_ID_NIKON         0x04b0
+#define VENDOR_ID_MOTOROLA      0x22b8
+
 /***********************************************************************
  * Host functions 
  ***********************************************************************/
@@ -142,6 +149,22 @@ static int slave_configure(struct scsi_device *sdev)
          * settings can't be overridden via the scsi devinfo mechanism. */
         if (sdev->type == TYPE_DISK) {
 
+                /* Some vendors seem to put the READ CAPACITY bug into
+                 * all their devices -- primarily makers of cell phones
+                 * and digital cameras.  Since these devices always use
+                 * flash media and can be expected to have an even number
+                 * of sectors, we will always enable the CAPACITY_HEURISTICS
+                 * flag unless told otherwise. */
+                switch (le16_to_cpu(us->pusb_dev->descriptor.idVendor)) {
+                case VENDOR_ID_NOKIA:
+                case VENDOR_ID_NIKON:
+                case VENDOR_ID_MOTOROLA:
+                        if (!(us->fflags & (US_FL_FIX_CAPACITY |
+                                        US_FL_CAPACITY_OK)))
+                                us->fflags |= US_FL_CAPACITY_HEURISTICS;
+                        break;
+                }
+
                 /* Disk-type devices use MODE SENSE(6) if the protocol
                  * (SubClass) is Transparent SCSI, otherwise they use
                  * MODE SENSE(10). */