From: Hans de Goede <hdegoede@redhat.com>
Date: Fri, 1 Oct 2010 21:20:11 +0000 (-0700)
Subject: usb-storage: add new no_read_capacity_16 quirk
X-Git-Tag: firefly_0821_release~7613^2~3677^2~41
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=00914025cc4e783d4703b4db1d47b41f389e50c8;p=firefly-linux-kernel-4.4.55.git

usb-storage: add new no_read_capacity_16 quirk

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@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index a1128ff5cc2c..a688b1e686ea 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 c8264ff5457e..6ccdd3dd5259 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",
 		USB_SC_DEVICE, USB_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@nanthrax.net>
  * Support the following product :
diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h
index e62e9fe08883..71693d4a4fe1 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 };