From: Dan Carpenter Date: Mon, 18 Mar 2013 20:25:26 +0000 (+0000) Subject: IB/ipath: Silence a static checker warning X-Git-Tag: firefly_0821_release~3680^2~842^2^3~1 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3c32869f7afe40ff7372e5bb7cd3d8b4520711bb;p=firefly-linux-kernel-4.4.55.git IB/ipath: Silence a static checker warning I have a static checker which complains that 0x255 is too high for the "dev->opstats[opcode]" array. It turns out that the hardware has already validated the opcode at this point so it can't actually overflow. However, silencing the warning is good and this matches how the opcode is treated in qib_ib_rcv() as well. Signed-off-by: Dan Carpenter Acked-by: Mike Marciniszyn Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index 439c35d4a669..ea93870266eb 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -620,7 +620,7 @@ void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data, goto bail; } - opcode = be32_to_cpu(ohdr->bth[0]) >> 24; + opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0x7f; dev->opstats[opcode].n_bytes += tlen; dev->opstats[opcode].n_packets++;