USB-BKL: Convert usb_driver ioctl to unlocked_ioctl
And audit all the users. None needed the BKL. That was easy
because there was only very few around.
Tested with allmodconfig build on x86-64
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
From: Andi Kleen <ak@linux.intel.com>
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index c2f62a3..f1aaff6 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1668,13 +1668,10 @@
default:
if (intf->dev.driver)
driver = to_usb_driver(intf->dev.driver);
- if (driver == NULL || driver->ioctl == NULL) {
+ if (driver == NULL || driver->unlocked_ioctl == NULL) {
retval = -ENOTTY;
} else {
- /* keep API that guarantees BKL */
- lock_kernel();
- retval = driver->ioctl(intf, ctl->ioctl_code, buf);
- unlock_kernel();
+ retval = driver->unlocked_ioctl(intf, ctl->ioctl_code, buf);
if (retval == -ENOIOCTLCMD)
retval = -ENOTTY;
}