linux/drivers/usb/core, branch v3.9

USB / PM: Don't try to hide PM QoS flags from usb_port_device_release()

2013-04-01T23:25:09Z

Remove the call to dev_pm_qos_hide_flags(), added by commit 6e30d7cb "usb: Add driver/usb/core/(port.c,hub.h) files", from usb_port_device_release(), because (1) it is completely unnecessary (the flags have been removed already by the PM core during the unregistration of the device object) and (2) it triggers a NULL pointer dereference in sysfs_find_dirent() (dev->kobj.sd is NULL at this point). Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman

usb/acpi: binding xhci root hub usb port with ACPI

2013-03-25T17:39:17Z

This patch is to bind xhci root hub usb port with its acpi node. The port num in the acpi table matches with the sequence in the xhci extended capabilities table. So call usb_hcd_find_raw_port_number() to transfer hub port num into raw port number which associates with the sequence in the xhci extended capabilities table before binding. Signed-off-by: Lan Tianyu Signed-off-by: Sarah Sharp

usb: add find_raw_port_number callback to struct hc_driver()

2013-03-25T17:39:17Z

xhci driver divides the root hub into two logical hubs which work respectively for usb 2.0 and usb 3.0 devices. They are independent devices in the usb core. But in the ACPI table, it's one device node and all usb2.0 and usb3.0 ports are under it. Binding usb port with its acpi node needs the raw port number which is reflected in the xhci extended capabilities table. This patch is to add find_raw_port_number callback to struct hc_driver(), fill it with xhci_find_raw_port_number() which will return raw port number and add a wrap usb_hcd_find_raw_port_number(). Otherwise, refactor xhci_find_real_port_number(). Using xhci_find_raw_port_number() to get real index in the HW port status registers instead of scanning through the xHCI roothub port array. This can help to speed up. All addresses in xhci->usb2_ports and xhci->usb3_ports array are kown good ports and don't include following bad ports in the extended capabilities talbe. (1) root port that doesn't have an entry (2) root port with unknown speed (3) root port that is listed twice and with different speeds. So xhci_find_raw_port_number() will only return port num of good ones and never touch bad ports above. Signed-off-by: Lan Tianyu Signed-off-by: Sarah Sharp

USB: xhci: correctly enable interrupts

2013-03-15T19:07:53Z

xhci has its own interrupt enabling routine, which will try to use MSI-X/MSI if present. So the usb core shouldn't try to enable legacy interrupts; on some machines the xhci legacy IRQ setting is invalid. v3: Be careful to not break XHCI_BROKEN_MSI workaround (by trenn) Cc: Bjorn Helgaas Cc: Oliver Neukum Cc: Thomas Renninger Cc: Yinghai Lu Cc: Frederik Himpe Cc: David Haerdeman Cc: Alan Stern Acked-by: Sarah Sharp Reviewed-by: Thomas Renninger Signed-off-by: Hannes Reinecke Cc: stable Signed-off-by: Greg Kroah-Hartman

ACPI / glue: Add .match() callback to struct acpi_bus_type

2013-03-04T13:23:40Z

USB uses the .find_bridge() callback from struct acpi_bus_type incorrectly, because as a result of the way it is used by USB every device in the system that doesn't have a bus type or parent is passed to usb_acpi_find_device() for inspection. What USB actually needs, though, is to call usb_acpi_find_device() for USB ports that don't have a bus type defined, but have usb_port_device_type as their device type, as well as for USB devices. To fix that replace the struct bus_type pointer in struct acpi_bus_type used for matching devices to specific subsystems with a .match() callback to be used for this purpose and update the users of struct acpi_bus_type, including USB, accordingly. Define the .match() callback routine for USB, usb_acpi_bus_match(), in such a way that it will cover both USB devices and USB ports and remove the now redundant .find_bridge() callback pointer from usb_acpi_bus. Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman Acked-by: Yinghai Lu Acked-by: Jeff Garzik

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-27T04:16:07Z

Pull vfs pile (part one) from Al Viro: "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent locking violations, etc. The most visible changes here are death of FS_REVAL_DOT (replaced with "has ->d_weak_revalidate()") and a new helper getting from struct file to inode. Some bits of preparation to xattr method interface changes. Misc patches by various people sent this cycle *and* ocfs2 fixes from several cycles ago that should've been upstream right then. PS: the next vfs pile will be xattr stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits) saner proc_get_inode() calling conventions proc: avoid extra pde_put() in proc_fill_super() fs: change return values from -EACCES to -EPERM fs/exec.c: make bprm_mm_init() static ocfs2/dlm: use GFP_ATOMIC inside a spin_lock ocfs2: fix possible use-after-free with AIO ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero target: writev() on single-element vector is pointless export kernel_write(), convert open-coded instances fs: encode_fh: return FILEID_INVALID if invalid fid_type kill f_vfsmnt vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op nfsd: handle vfs_getattr errors in acl protocol switch vfs_getattr() to struct path default SET_PERSONALITY() in linux/elf.h ceph: prepopulate inodes only when request is aborted d_hash_and_lookup(): export, switch open-coded instances 9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate() 9p: split dropping the acls from v9fs_set_create_acl() ...

usb: forbid memory allocation with I/O during bus reset

2013-02-24T01:50:16Z

If one storage interface or usb network interface(iSCSI case) exists in current configuration, memory allocation with GFP_KERNEL during usb_device_reset() might trigger I/O transfer on the storage interface itself and cause deadlock because the 'us->dev_mutex' is held in .pre_reset() and the storage interface can't do I/O transfer when the reset is triggered by other interface, or the error handling can't be completed if the reset is triggered by the storage itself (error handling path). Signed-off-by: Ming Lei Cc: "David S. Miller" Cc: Eric Dumazet Cc: David Decotigny Cc: Tom Herbert Cc: Ingo Molnar Cc: Jens Axboe Cc: Minchan Kim Cc: Alan Stern Cc: Oliver Neukum Reviewed-by: Jiri Kosina Cc: Mel Gorman Cc: KAMEZAWA Hiroyuki Cc: Michal Hocko Cc: Ingo Molnar Cc: Peter Zijlstra Cc: "Rafael J. Wysocki" Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

new helper: file_inode(file)

2013-02-23T04:31:31Z

Signed-off-by: Al Viro

Merge usb-linus branch into usb-next

2013-02-08T20:03:11Z

This pulls in a bunch of fixes that are in Linus's tree because we need them here for testing and development. Signed-off-by: Greg Kroah-Hartman

drivers/usb/core: using strlcpy instead of strncpy

2013-02-06T19:38:13Z

for NUL terminated string, better notice '\0' in the end. Signed-off-by: Chen Gang Signed-off-by: Greg Kroah-Hartman