From b94badbb47cb50f4fca8440efdaa8ebd32604fe4 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 1 Aug 2006 22:33:34 -0400 Subject: 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: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/usb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 184c24660a4..ab766e0fe4e 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -761,7 +761,9 @@ void usb_buffer_free ( ) { if (!dev || !dev->bus || !dev->bus->op || !dev->bus->op->buffer_free) - return; + return; + if (!addr) + return; dev->bus->op->buffer_free (dev->bus, size, addr, dma); } -- cgit v1.2.3