Return-path: Received: from arrakis.dune.hu ([78.24.191.176]:55332 "EHLO arrakis.dune.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754547Ab3HPWeD (ORCPT ); Fri, 16 Aug 2013 18:34:03 -0400 From: Gabor Juhos To: "John W. Linville" Cc: linux-wireless@vger.kernel.org, users@rt2x00.serialmonkey.com, Gabor Juhos Subject: [PATCH 1/5] rt2x00: rt2800lib: fix frequency offset boundary calculation Date: Fri, 16 Aug 2013 22:38:14 +0200 Message-Id: <1376685498-5167-2-git-send-email-juhosg@openwrt.org> (sfid-20130817_003409_176606_43E986E4) In-Reply-To: <1376685498-5167-1-git-send-email-juhosg@openwrt.org> References: <1376685498-5167-1-git-send-email-juhosg@openwrt.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: The current code in the 'rt2800_adjust_freq_offset' function limits the device specific frequency offset value to FREQ_BOUND but ignores the fact that the uppermost bit is not part of the frequency offset value. As the result, the driver always uses the FREQ_BOUND value if the uppermost bit is set. Update the code to use the correct source value for calculating the boundary. Based on the DPO_RT5572_LinuxSTA_2.6.0.1_20120629 driver. Reference: RTMPAdjustFrequencyOffset function in common/rt_rf.c Signed-off-by: Gabor Juhos --- drivers/net/wireless/rt2x00/rt2800lib.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 313da6a..d4e6dea 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -2494,13 +2494,14 @@ static void rt2800_config_channel_rf3053(struct rt2x00_dev *rt2x00dev, static void rt2800_adjust_freq_offset(struct rt2x00_dev *rt2x00dev) { + u8 freq_offset; u8 rfcsr; + freq_offset = rt2x00_get_field8(rt2x00dev->freq_offset, RFCSR17_CODE); + freq_offset = min_t(u8, freq_offset, FREQ_OFFSET_BOUND); + rt2800_rfcsr_read(rt2x00dev, 17, &rfcsr); - if (rt2x00dev->freq_offset > FREQ_OFFSET_BOUND) - rt2x00_set_field8(&rfcsr, RFCSR17_CODE, FREQ_OFFSET_BOUND); - else - rt2x00_set_field8(&rfcsr, RFCSR17_CODE, rt2x00dev->freq_offset); + rt2x00_set_field8(&rfcsr, RFCSR17_CODE, freq_offset); rt2800_rfcsr_write(rt2x00dev, 17, rfcsr); } -- 1.7.10