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authorHans de Goede <hdegoede@redhat.com>2010-10-01 14:20:10 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2010-10-22 10:22:04 -0700
commitae38c78a03e1b77ad45248fcf097e4568e740209 (patch)
treef751122a6ec59825793f7786cec15f76a89c905f /drivers/usb/storage/scsiglue.c
parent8e04d8056c1ea0e0aab730994b74756f0526cda8 (diff)
downloadop-kernel-dev-ae38c78a03e1b77ad45248fcf097e4568e740209.zip
op-kernel-dev-ae38c78a03e1b77ad45248fcf097e4568e740209.tar.gz
usb-storage: add new no_read_disc_info quirk
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. [akpm@linux-foundation.org: fix build] 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>
Diffstat (limited to 'drivers/usb/storage/scsiglue.c')
-rw-r--r--drivers/usb/storage/scsiglue.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index e80362d..a1128ff 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_FL_NO_READ_DISC_INFO)
+ sdev->no_read_disc_info = 1;
}
/* The CB and CBI transports have no way to pass LUN values
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