Commit cae0cf65 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: usx2y: Don't call free_pages_exact() with NULL address 

Unlike some other functions, we can't pass NULL pointer to
free_pages_exact().  Add a proper NULL check for avoiding possible
Oops.

Link: https://lore.kernel.org/r/20210517131545.27252-10-tiwai@suse.de


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 64a06f19

sound/usb/usx2y/usb_stream.c

+5 −2
Original line number Diff line number Diff line
@@ -143,8 +143,11 @@ void usb_stream_free(struct usb_stream_kernel *sk) 
	if (!s)

		return;



	if (sk->write_page) {

		free_pages_exact(sk->write_page, s->write_size);

		sk->write_page = NULL;

	}



	free_pages_exact(s, s->read_size);

	sk->s = NULL;

}