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Commit f6ace2c9 authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Greg Kroah-Hartman
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USB: r8a66597-hcd: fix NULL access 



This patch fixes the problem that accesses NULL pointer
when disconnected a cable while play music with usb-speaker.

Signed-off-by: default avatarYoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 5d304358

drivers/usb/host/r8a66597-hcd.c

+4 −1
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); 
MODULE_LICENSE("GPL");

MODULE_AUTHOR("Yoshihiro Shimoda");



#define DRIVER_VERSION	"9 May 2007"

#define DRIVER_VERSION	"29 May 2007"



static const char hcd_name[] = "r8a66597_hcd";
@@ -544,6 +544,9 @@ static void pipe_toggle_restore(struct r8a66597 *r8a66597, 
	unsigned char endpoint = usb_pipeendpoint(urb->pipe);

	unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);



	if (!toggle)

		return;



	r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));

}