i3c: Fix a shift wrap bug in i3c_bus_set_addr_slot_status()
authorDan Carpenter <dan.carpenter@oracle.com>
Tue, 23 Apr 2019 10:40:20 +0000 (13:40 +0300)
committerBoris Brezillon <boris.brezillon@collabora.com>
Mon, 6 May 2019 06:15:02 +0000 (08:15 +0200)
commit476c7e1d34f2a03b1aa5a924c50703053fe5f77c
tree4b78b80c72c9e9a18e0bd34f352696b330af5f11
parent124dbd750da4a9bf494ae9d8cbed364058140731
i3c: Fix a shift wrap bug in i3c_bus_set_addr_slot_status()

The problem here is that addr can be I3C_BROADCAST_ADDR (126).  That
means we're shifting by (126 * 2) % 64 which is 60.  The
I3C_ADDR_SLOT_STATUS_MASK is an enum which is an unsigned int in GCC
so shifts greater than 31 are undefined.

Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure")
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
drivers/i3c/master.c