Merge tag 'for-usb-next-2014-03-06' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-next

Sarah writes:

xhci: Streams and UAS cleanups, misc cleanups for 3.15

Hi Greg,

Here's 76 patches to queue to usb-next for 3.15.

The bulk of this rather large pull request is the UAS driver cleanup, the
xHCI streams fixes, and the new userspace API for usbfs to be able to use
and alloc/free bulk streams.  I've hammered on these changes, and the UAS
driver seems solid.  The performance numbers are pretty spiffy too:

root@xanatos:~# echo 3 > /proc/sys/vm/drop_caches; dd if=/dev/sdb of=/dev/null bs=4k count=1000M iflag=count_bytes
256000+0 records in
256000+0 records out
1048576000 bytes (1.0 GB) copied, 3.28557 s, 319 MB/s

That's about 100 MB/s faster than my fastest Bulk-only-Transport mass
storage drive.

There's a couple of miscellaneous cleanup patches and non-urgent bug fixes
in here as well:

7969943789df xhci: add the meaningful IRQ description if it is empty
bcffae7708eb xhci: Prevent runtime pm from autosuspending during initialization
e587b8b270d3 xhci: make warnings greppable
25cd2882e2fc usb/xhci: Change how we indicate a host supports Link PM.

Sarah Sharp

2 files changed, 8 insertions, 7 deletions

diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index efe8d8a7c7ad..485cd5e2100c 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -143,6 +143,7 @@ struct usb_hcd {
         unsigned                authorized_default:1;
         unsigned                has_tt:1;       /* Integrated TT in root hub */
         unsigned                amd_resume_bug:1; /* AMD remote wakeup quirk */
+        unsigned                can_do_streams:1; /* HC supports streams */
 
         unsigned int            irq;            /* irq allocated */
         void __iomem            *regs;          /* device memory/io */
diff --git a/include/linux/usb/uas.h b/include/linux/usb/uas.h
index 5499ab5c94bd..3fc8e8b9f043 100644
--- a/include/linux/usb/uas.h
+++ b/include/linux/usb/uas.h
@@ -9,7 +9,7 @@ struct iu {
         __u8 iu_id;
         __u8 rsvd1;
         __be16 tag;
-};
+} __attribute__((__packed__));
 
 enum {
         IU_ID_COMMAND           = 0x01,
@@ -52,7 +52,7 @@ struct command_iu {
         __u8 rsvd7;
         struct scsi_lun lun;
         __u8 cdb[16];   /* XXX: Overflow-checking tools may misunderstand */
-};
+} __attribute__((__packed__));
 
 struct task_mgmt_iu {
         __u8 iu_id;
@@ -62,7 +62,7 @@ struct task_mgmt_iu {
         __u8 rsvd2;
         __be16 task_tag;
         struct scsi_lun lun;
-};
+} __attribute__((__packed__));
 
 /*
  * Also used for the Read Ready and Write Ready IUs since they have the
@@ -77,15 +77,15 @@ struct sense_iu {
         __u8 rsvd7[7];
         __be16 len;
         __u8 sense[SCSI_SENSE_BUFFERSIZE];
-};
+} __attribute__((__packed__));
 
-struct response_ui {
+struct response_iu {
         __u8 iu_id;
         __u8 rsvd1;
         __be16 tag;
-        __be16 add_response_info;
+        __u8 add_response_info[3];
         __u8 response_code;
-};
+} __attribute__((__packed__));
 
 struct usb_pipe_usage_descriptor {
         __u8  bLength;