Appotech ax3003 (the larger brother of the ax203) based devices are even
more buggy then the ax203. They will go of into lala land when ever they
see a READ_DISC_INFO scsi command. So add a new US_FL which tells the
scsi sr driver to not issue any READ_DISC_INFO scsi commands.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/usb/storage/scsiglue.c | 4 ++++
drivers/usb/storage/unusual_devs.h | 5 +++++
include/linux/usb_usual.h | 4 +++-
3 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index d8d98cf..4a30fbf 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -253,6 +253,10 @@ static int slave_configure(struct scsi_device *sdev)
* or to force 192-byte transfer lengths for MODE SENSE.
* But they do need to use MODE SENSE(10). */
sdev->use_10_for_ms = 1;
+
+ /* Some (fake) usb cdrom devices don't like READ_DISC_INFO */
+ if (us->fflags & US_FLAG_NO_READ_DISC_INFO)
+ sdev->no_read_disc_info = 1;
}
/* The CB and CBI transports have no way to pass LUN values
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 2c897ee..42a83c4 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1858,6 +1858,11 @@ UNUSUAL_DEV( 0x1908, 0x1320, 0x0000, 0x0000,
"Photo Frame",
US_SC_DEVICE, US_PR_DEVICE, NULL,
US_FL_BAD_SENSE ),
+UNUSUAL_DEV( 0x1908, 0x3335, 0x0200, 0x0200,
+ "BUILDWIN",
+ "Photo Frame",
+ US_SC_DEVICE, US_PR_DEVICE, NULL,
+ US_FL_NO_READ_DISC_INFO ),
UNUSUAL_DEV( 0x2116, 0x0320, 0x0001, 0x0001,
"ST",
diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h
index a4b947e..bff51d0 100644
--- a/include/linux/usb_usual.h
+++ b/include/linux/usb_usual.h
@@ -58,7 +58,9 @@
US_FLAG(CAPACITY_OK, 0x00010000) \
/* READ CAPACITY response is correct */ \
US_FLAG(BAD_SENSE, 0x00020000) \
- /* Bad Sense (never more than 18 bytes) */
+ /* Bad Sense (never more than 18 bytes) */ \
+ US_FLAG(NO_READ_DISC_INFO, 0x00040000) \
+ /* cannot handle READ_DISC_INFO */
#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };
--
1.7.0.1
--
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