diff options
| author | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-09 11:52:31 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-27 10:57:30 -0700 |
| commit | 341487a837c02cbd674d4751061e7d098b0b8e98 (patch) | |
| tree | 58166480d534a86f7b096b81572bd51c8dad031d /drivers/usb/core/devices.c | |
| parent | b7bb125dc3d0ca3f72c9116525ce0f018a9844e1 (diff) | |
USB: remove use of the bus rwsem, as it doesn't really protect anything.
The driver core stopped using the rwsem a long time ago, yet the USB
core still grabbed the lock, thinking it protected something. This
patch removes that useless use.
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Oliver Neukum <oneukum@suse.de>
Cc: David Brownell <david-b@pacbell.net>
Cc: linux-usb-devel <linux-usb-devel@lists.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/devices.c')
| -rw-r--r-- | drivers/usb/core/devices.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index aefc7987120..6753ca059ee 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -246,7 +246,6 @@ static char *usb_dump_interface_descriptor(char *start, char *end, if (start > end) return start; - down_read(&usb_bus_type.subsys.rwsem); if (iface) { driver_name = (iface->dev.driver ? iface->dev.driver->name @@ -263,7 +262,6 @@ static char *usb_dump_interface_descriptor(char *start, char *end, desc->bInterfaceSubClass, desc->bInterfaceProtocol, driver_name); - up_read(&usb_bus_type.subsys.rwsem); return start; } |