Commit a9007054 authored May 22, 2015 by Takashi Sakamoto Committed by Takashi Iwai May 24, 2015

ALSA: firewire-lib: use protocol error when detecting wrong value in CIP header



When detecting zero in 'dbs' field of CIP header, this packet streaming
should be aborted because of avoiding division-by-zero. This is an error
in an aspect of IEC 61883-1, thus protocol error.

This commit use EPROTO instead of EIO. Actually, the returned value is
not used for userspace and this commit has no effect.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

parent 12e0f438

sound/firewire/amdtp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -726,7 +726,7 @@ static int handle_in_packet(struct amdtp_stream *s,
		dev_err(&s->unit->device,
		"Detect invalid value in dbs field: %08X\n",
		cip_header[0]);
		return -EIO;
		return -EPROTO;
		}
		if (s->flags & CIP_WRONG_DBS)
		data_block_quadlets = s->data_block_quadlets;