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USB: uas: heed CAPACITY_HEURISTICS
author
Oliver Neukum
<oneukum@suse.com>
Thu, 14 Nov 2019 11:27:57 +0000
(12:27 +0100)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Tue, 17 Dec 2019 18:55:32 +0000
(19:55 +0100)
commit
335cbbd5762d5e5c67a8ddd6e6362c2aa42a328f
upstream.
There is no need to ignore this flag. We should be as close
to storage in that regard as makes sense, so honor flags whose
cost is tiny.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@vger.kernel.org>
Link:
https://lore.kernel.org/r/20191114112758.32747-3-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/storage/uas.c
patch
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diff --git
a/drivers/usb/storage/uas.c
b/drivers/usb/storage/uas.c
index
def2d4a
..
475b9c6
100644
(file)
--- a/
drivers/usb/storage/uas.c
+++ b/
drivers/usb/storage/uas.c
@@
-838,6
+838,12
@@
static int uas_slave_configure(struct scsi_device *sdev)
sdev->fix_capacity = 1;
/*
+ * in some cases we have to guess
+ */
+ if (devinfo->flags & US_FL_CAPACITY_HEURISTICS)
+ sdev->guess_capacity = 1;
+
+ /*
* Some devices don't like MODE SENSE with page=0x3f,
* which is the command used for checking if a device
* is write-protected. Now that we tell the sd driver