Some Rockbox based mp4 players will crash when ever they see a
read_capacity_16 scsi command. So add a new US_FL which tells the
scsi sd driver to not issue any read_capacity_16 scsi commands.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/usb/storage/scsiglue.c | 4 ++++
drivers/usb/storage/unusual_devs.h | 3 ++-
include/linux/usb_usual.h | 4 +++-
3 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 4a30fbf..4d0c437 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -209,6 +209,10 @@ static int slave_configure(struct scsi_device *sdev)
if (us->fflags & US_FL_CAPACITY_HEURISTICS)
sdev->guess_capacity = 1;
+ /* Some devices cannot handle READ_CAPACITY_16 */
+ if (us->fflags & US_FL_NO_READ_CAPACITY_16)
+ sdev->no_read_capacity_16 = 1;
+
/* assume SPC3 or latter devices support sense size > 18 */
if (sdev->scsi_level > SCSI_SPC_2)
us->fflags |= US_FL_SANE_SENSE;
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 42a83c4..262ba6d 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -877,7 +877,8 @@ UNUSUAL_DEV( 0x071b, 0x3203, 0x0000, 0x0000,
"RockChip",
"MP3",
US_SC_DEVICE, US_PR_DEVICE, NULL,
- US_FL_NO_WP_DETECT | US_FL_MAX_SECTORS_64),
+ US_FL_NO_WP_DETECT | US_FL_MAX_SECTORS_64 |
+ US_FL_NO_READ_CAPACITY_16),
/* Reported by Jean-Baptiste Onofre <jb@xxxxxxxxxxxx>
* Support the following product :
diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h
index bff51d0..d4ee5b8 100644
--- a/include/linux/usb_usual.h
+++ b/include/linux/usb_usual.h
@@ -60,7 +60,9 @@
US_FLAG(BAD_SENSE, 0x00020000) \
/* Bad Sense (never more than 18 bytes) */ \
US_FLAG(NO_READ_DISC_INFO, 0x00040000) \
- /* cannot handle READ_DISC_INFO */
+ /* cannot handle READ_DISC_INFO */ \
+ US_FLAG(NO_READ_CAPACITY_16, 0x00080000) \
+ /* cannot handle READ_CAPACITY_16 */
#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };
--
1.7.0.1
--
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