Commit b94badbb authored by Dmitry Torokhov's avatar Dmitry Torokhov Committed by Greg Kroah-Hartman
Browse files

USB: Make usb_buffer_free() NULL-safe 



kfree() handles NULL arguments which is handy in error handling paths as one
does need to  insert bunch of ifs. How about making usb_buffer_free() do the
same?

Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 988440e7

drivers/usb/core/usb.c

+3 −1
Original line number Diff line number Diff line
@@ -762,6 +762,8 @@ void usb_buffer_free ( 
{

	if (!dev || !dev->bus || !dev->bus->op || !dev->bus->op->buffer_free)

		return;

	if (!addr)

		return;

	dev->bus->op->buffer_free (dev->bus, size, addr, dma);

}