Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]:43260 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752217AbdG1PnT (ORCPT ); Fri, 28 Jul 2017 11:43:19 -0400 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Subject: Re: rtlwifi: rtl8821ae: Fix HW_VAR_NAV_UPPER operation From: Kalle Valo In-Reply-To: <20170713074323.r7rjpnp6ghrdtjgx@mwanda> References: <20170713074323.r7rjpnp6ghrdtjgx@mwanda> To: Dan Carpenter Cc: Larry Finger , Chaoming Li , Ping-Ke Shih , Masanari Iida , linux-wireless@vger.kernel.org, kernel-janitors@vger.kernel.org Message-Id: <20170728154319.6B1E96090D@smtp.codeaurora.org> (sfid-20170728_174323_765760_FA955621) Date: Fri, 28 Jul 2017 15:43:19 +0000 (UTC) Sender: linux-wireless-owner@vger.kernel.org List-ID: Dan Carpenter wrote: > The cast here is wrong. We want to cast the pointer but we accidentally > do a no-op cast of the value. We normally want to set us_nav_upper to > WIFI_NAV_UPPER_US (30000) but because of this bug we instead set it to > 184 on little endian systems and 0 on big endian ones. > > Fixes: 3c05bedb5fef ("Staging: rtl8812ae: Add Realtek 8821 PCI WIFI driver") > Signed-off-by: Dan Carpenter > Acked-by: Larry Finger > > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c > index 2bc6bace069c..230f92a48f3c 100644 > --- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c > +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c > @@ -779,7 +779,7 @@ void rtl8821ae_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val) > _rtl8821ae_resume_tx_beacon(hw); > break; } > case HW_VAR_NAV_UPPER: { > - u32 us_nav_upper = ((u32)*val); > + u32 us_nav_upper = *(u32 *)val; > > if (us_nav_upper > HAL_92C_NAV_UPPER_UNIT * 0xFF) { > RT_TRACE(rtlpriv, COMP_INIT , DBG_WARNING, Patch applied to wireless-drivers-next.git, thanks. d28ac7be15c7 rtlwifi: rtl8821ae: Fix HW_VAR_NAV_UPPER operation -- https://patchwork.kernel.org/patch/9837847/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches