Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758522Ab2JXN6l (ORCPT ); Wed, 24 Oct 2012 09:58:41 -0400 Received: from Chamillionaire.breakpoint.cc ([80.244.247.6]:43484 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756111Ab2JXN6j (ORCPT ); Wed, 24 Oct 2012 09:58:39 -0400 Date: Wed, 24 Oct 2012 15:58:34 +0200 From: Sebastian Andrzej Siewior To: Dmytro Milinevskyy Cc: Felipe Balbi , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] usb: gadget: ncm: correct endianess conversion Message-ID: <20121024135834.GA4368@breakpoint.cc> References: <1349729943-28995-1-git-send-email-milinevskyy@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1349729943-28995-1-git-send-email-milinevskyy@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1730 Lines: 42 On Mon, Oct 08, 2012 at 11:59:03PM +0300, Dmytro Milinevskyy wrote: > Convert USB descriptor's fields to CPU byte order before using locally in USB NCM gadget driver. > Tested on MIPS32 big-endian device. > > Signed-off-by: Dmytro Milinevskyy > --- > drivers/usb/gadget/f_ncm.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c > index b651b52..fce45ab 100644 > --- a/drivers/usb/gadget/f_ncm.c > +++ b/drivers/usb/gadget/f_ncm.c > @@ -869,11 +869,11 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port, > struct sk_buff *skb2; > int ncb_len = 0; > __le16 *tmp; > - int div = ntb_parameters.wNdpInDivisor; > - int rem = ntb_parameters.wNdpInPayloadRemainder; > - int pad; > - int ndp_align = ntb_parameters.wNdpInAlignment; > - int ndp_pad; > + int div = le16_to_cpu(ntb_parameters.wNdpInDivisor); > + int rem = le16_to_cpu(ntb_parameters.wNdpInPayloadRemainder); > + int pad; > + int ndp_align = le16_to_cpu(ntb_parameters.wNdpInAlignment); > + int ndp_pad; It would be nice to keep the two tabs between int and variable. One question: In ntb_parameters the member wLength is 16bit and not using cpu_to_le16(). How does it work? Is the test on host side not strict enough? > unsigned max_size = ncm->port.fixed_in_len; > struct ndp_parser_opts *opts = ncm->parser_opts; > unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/