commit
821117dc21083a99dd99174c10848d70ff43de29 upstream.
Return an error rather than memcpy()ing beyond the end of the buffer.
Internal callers use appropriate sizes, but digitv_i2c_xfer may not.
Signed-off-by: Alyssa Milburn <amilburn@zall.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
[bwh: Backported to 3.2: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
{
int wo = (rbuf == NULL || rlen == 0); /* write-only */
u8 sndbuf[7],rcvbuf[7];
{
int wo = (rbuf == NULL || rlen == 0); /* write-only */
u8 sndbuf[7],rcvbuf[7];
+
+ if (wlen > 4 || rlen > 4)
+ return -EIO;
+
memset(sndbuf,0,7); memset(rcvbuf,0,7);
sndbuf[0] = cmd;
memset(sndbuf,0,7); memset(rcvbuf,0,7);
sndbuf[0] = cmd;