Patch "uas: Allow uas_use_uas_driver to return usb-storage flags" has been added to the 4.0-stable tree

Patch "uas: Allow uas_use_uas_driver to return usb-storage flags" has been added to the 4.0-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    uas: Allow uas_use_uas_driver to return usb-storage flags

to the 4.0-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     uas-allow-uas_use_uas_driver-to-return-usb-storage-flags.patch
and it can be found in the queue-4.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From a5011d44f0e1117a6db14b19b57c51f8be5673a0 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Tue, 21 Apr 2015 11:20:30 +0200
Subject: uas: Allow uas_use_uas_driver to return usb-storage flags

From: Hans de Goede <hdegoede@redhat.com>

commit a5011d44f0e1117a6db14b19b57c51f8be5673a0 upstream.

uas_use_uas_driver may set some US_FL_foo flags during detection, currently
these are stored in a local variable and then throw away, but these may be
of interest to the caller, so add an extra parameter to (optionally) return
the detected flags, and use this in the uas driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/storage/uas-detect.h |    6 +++++-
 drivers/usb/storage/uas.c        |    6 +++---
 drivers/usb/storage/usb.c        |    2 +-
 3 files changed, 9 insertions(+), 5 deletions(-)

--- a/drivers/usb/storage/uas-detect.h
+++ b/drivers/usb/storage/uas-detect.h
@@ -51,7 +51,8 @@ static int uas_find_endpoints(struct usb
 }
 
 static int uas_use_uas_driver(struct usb_interface *intf,
-			      const struct usb_device_id *id)
+			      const struct usb_device_id *id,
+			      unsigned long *flags_ret)
 {
 	struct usb_host_endpoint *eps[4] = { };
 	struct usb_device *udev = interface_to_usbdev(intf);
@@ -132,5 +133,8 @@ static int uas_use_uas_driver(struct usb
 		return 0;
 	}
 
+	if (flags_ret)
+		*flags_ret = flags;
+
 	return 1;
 }
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -887,8 +887,9 @@ static int uas_probe(struct usb_interfac
 	struct Scsi_Host *shost = NULL;
 	struct uas_dev_info *devinfo;
 	struct usb_device *udev = interface_to_usbdev(intf);
+	unsigned long dev_flags;
 
-	if (!uas_use_uas_driver(intf, id))
+	if (!uas_use_uas_driver(intf, id, &dev_flags))
 		return -ENODEV;
 
 	if (uas_switch_interface(udev, intf))
@@ -910,8 +911,7 @@ static int uas_probe(struct usb_interfac
 	devinfo->udev = udev;
 	devinfo->resetting = 0;
 	devinfo->shutdown = 0;
-	devinfo->flags = id->driver_info;
-	usb_stor_adjust_quirks(udev, &devinfo->flags);
+	devinfo->flags = dev_flags;
 	init_usb_anchor(&devinfo->cmd_urbs);
 	init_usb_anchor(&devinfo->sense_urbs);
 	init_usb_anchor(&devinfo->data_urbs);
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -1080,7 +1080,7 @@ static int storage_probe(struct usb_inte
 
 	/* If uas is enabled and this device can do uas then ignore it. */
 #if IS_ENABLED(CONFIG_USB_UAS)
-	if (uas_use_uas_driver(intf, id))
+	if (uas_use_uas_driver(intf, id, NULL))
 		return -ENXIO;
 #endif
 


Patches currently in stable-queue which might be from hdegoede@redhat.com are

queue-4.0/uas-set-max_sectors_240-quirk-for-asm1053-devices.patch
queue-4.0/uas-allow-uas_use_uas_driver-to-return-usb-storage-flags.patch
queue-4.0/uas-add-us_fl_max_sectors_240-flag.patch