From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f44.google.com (mail-lf1-f44.google.com [209.85.167.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E8DEB2F5D for ; Wed, 18 May 2022 22:11:55 +0000 (UTC) Received: by mail-lf1-f44.google.com with SMTP id u30so5948879lfm.9 for ; Wed, 18 May 2022 15:11:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ShEjWLHdCkNEmDqLMYUAy/x441siEBTIO9YBlH/otcw=; b=pCWwAN4ZC7E3ayvdQCb0m1pBLWWbpL/vWjaFw9TdSuC/vT0ts2JPJukLgjCVZuB+Oz GrERWJ2L1agZJBgEsIa5CpbQ9wSgvoyjD++DnP6YvLNm4k/JcCSnMmi2USGb7PZuS9P7 zoDiAH1WMWRZJ1MVOKKQ1zCiHgU3ZAA3TDPRsPzvWOD8OJV7gg27zbGqyLWbljCNOdBv fFFeJIKUDyEqI2y7EYFH2j3CZEnb2drU/KsImFfFxQxOc5RkTuY8tLMk0bXocvC2v3ZE f98sT0Ff2A7rxsjEq5XGSRaKkMYazuhVjWKHDhWKU1LlawYBnFzojSFXROcCY2mp0C5d lGOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ShEjWLHdCkNEmDqLMYUAy/x441siEBTIO9YBlH/otcw=; b=0TXa1wILvdnLTRGO4/MFfLEgAkQjzsNyERFlrzZMUUNdLSKjihJne2fHNt97SbPTi6 FdzECxHsR9e9TAJ1vA6NYe9DWpmN3njXa9TN/FEeYdBEvgUmfbh36M/1XOECbcGxAOCQ d7lgsWZ1Tfs/SfRuI3V6hhx59H5ss7kESI70Gc322IqbfWmNcEJX6MuVr0qJtVK3ocXg EAVOc7CiGPK5ahMuUVb3PdRrQusZN3IxQJLYx6FFUDWngM/5iI7KoPoc5HuBHsRzKuxG KMwR/l/2qX/B7F1VNIq6usv8rqIopYyKUKcmbJxrmHr7M//xt0N9fg/D7eCPWvWUO8Jg dDiQ== X-Gm-Message-State: AOAM530V9nKnHv0WF0nv4BJzq+fwGNjDWyPvMWfkUMTH5QuB9tCOIRQ5 k1A1+kZ0gvRPZrEDgH450y0= X-Google-Smtp-Source: ABdhPJwS7LQ2Ds/Ig4RjdUxQWZbdw2D3drCl6hbp7p4bVZ7aXZKOleK7aK08IwUIB0Sq/Gbt/yD3GQ== X-Received: by 2002:a05:6512:3f8b:b0:477:8c4d:30d0 with SMTP id x11-20020a0565123f8b00b004778c4d30d0mr1061392lfa.311.1652911913652; Wed, 18 May 2022 15:11:53 -0700 (PDT) Received: from localhost.localdomain ([46.235.67.4]) by smtp.gmail.com with ESMTPSA id u14-20020a056512094e00b0047255d21187sm66442lft.182.2022.05.18.15.11.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 May 2022 15:11:53 -0700 (PDT) From: Pavel Skripkin To: gregkh@linuxfoundation.org, Larry.Finger@lwfinger.net, phil@philpotter.co.uk, straube.linux@gmail.com, dan.carpenter@oracle.com, fmdefrancesco@gmail.com Cc: linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev, Pavel Skripkin Subject: [PATCH 1/4] staging: r8188eu: add error handling of rtw_read8 Date: Thu, 19 May 2022 01:11:51 +0300 Message-Id: <1a9834b705054dcd0b0be0d929084c44a224abaa.1652911343.git.paskripkin@gmail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit rtw_read8() reads data from device via USB API which may fail. In case of any failure previous code returned stack data to callers, which is wrong. Fix it by changing rtw_read8() prototype and prevent caller from touching random stack data Signed-off-by: Pavel Skripkin --- drivers/staging/r8188eu/core/rtw_efuse.c | 13 +- drivers/staging/r8188eu/core/rtw_fw.c | 46 ++++- drivers/staging/r8188eu/core/rtw_led.c | 20 ++- drivers/staging/r8188eu/core/rtw_mlme_ext.c | 49 +++++- drivers/staging/r8188eu/core/rtw_wlan_util.c | 20 ++- drivers/staging/r8188eu/hal/HalPhyRf_8188e.c | 17 +- drivers/staging/r8188eu/hal/HalPwrSeqCmd.c | 9 +- drivers/staging/r8188eu/hal/hal_com.c | 24 ++- drivers/staging/r8188eu/hal/rtl8188e_cmd.c | 37 +++- drivers/staging/r8188eu/hal/rtl8188e_dm.c | 6 +- .../staging/r8188eu/hal/rtl8188e_hal_init.c | 69 ++++++-- drivers/staging/r8188eu/hal/rtl8188e_phycfg.c | 10 +- drivers/staging/r8188eu/hal/usb_halinit.c | 159 ++++++++++++++---- drivers/staging/r8188eu/hal/usb_ops_linux.c | 7 +- drivers/staging/r8188eu/include/rtw_io.h | 2 +- drivers/staging/r8188eu/os_dep/ioctl_linux.c | 18 +- 16 files changed, 407 insertions(+), 99 deletions(-) diff --git a/drivers/staging/r8188eu/core/rtw_efuse.c b/drivers/staging/r8188eu/core/rtw_efuse.c index 0e0e60638880..a2691c7f96f6 100644 --- a/drivers/staging/r8188eu/core/rtw_efuse.c +++ b/drivers/staging/r8188eu/core/rtw_efuse.c @@ -28,14 +28,21 @@ ReadEFuseByte( u32 value32; u8 readbyte; u16 retry; + int res; /* Write Address */ rtw_write8(Adapter, EFUSE_CTRL + 1, (_offset & 0xff)); - readbyte = rtw_read8(Adapter, EFUSE_CTRL + 2); + res = rtw_read8(Adapter, EFUSE_CTRL + 2, &readbyte); + if (res) + return; + rtw_write8(Adapter, EFUSE_CTRL + 2, ((_offset >> 8) & 0x03) | (readbyte & 0xfc)); /* Write bit 32 0 */ - readbyte = rtw_read8(Adapter, EFUSE_CTRL + 3); + res = rtw_read8(Adapter, EFUSE_CTRL + 3, &readbyte); + if (res) + return; + rtw_write8(Adapter, EFUSE_CTRL + 3, (readbyte & 0x7f)); /* Check bit 32 read-ready */ @@ -54,6 +61,8 @@ ReadEFuseByte( value32 = rtw_read32(Adapter, EFUSE_CTRL); *pbuf = (u8)(value32 & 0xff); + + /* FIXME: return an error to caller */ } /*----------------------------------------------------------------------------- diff --git a/drivers/staging/r8188eu/core/rtw_fw.c b/drivers/staging/r8188eu/core/rtw_fw.c index bf077876ed3d..701b033830bc 100644 --- a/drivers/staging/r8188eu/core/rtw_fw.c +++ b/drivers/staging/r8188eu/core/rtw_fw.c @@ -44,18 +44,28 @@ static_assert(sizeof(struct rt_firmware_hdr) == 32); static void fw_download_enable(struct adapter *padapter, bool enable) { u8 tmp; + int res; if (enable) { /* MCU firmware download enable. */ - tmp = rtw_read8(padapter, REG_MCUFWDL); + res = rtw_read8(padapter, REG_MCUFWDL, &tmp); + if (res) + return; + rtw_write8(padapter, REG_MCUFWDL, tmp | 0x01); /* 8051 reset */ - tmp = rtw_read8(padapter, REG_MCUFWDL + 2); + res = rtw_read8(padapter, REG_MCUFWDL + 2, &tmp); + if (res) + return; + rtw_write8(padapter, REG_MCUFWDL + 2, tmp & 0xf7); } else { /* MCU firmware download disable. */ - tmp = rtw_read8(padapter, REG_MCUFWDL); + res = rtw_read8(padapter, REG_MCUFWDL, &tmp); + if (res) + return; + rtw_write8(padapter, REG_MCUFWDL, tmp & 0xfe); /* Reserved for fw extension. */ @@ -125,8 +135,13 @@ static int page_write(struct adapter *padapter, u32 page, u8 *buffer, u32 size) { u8 value8; u8 u8Page = (u8)(page & 0x07); + int res; - value8 = (rtw_read8(padapter, REG_MCUFWDL + 2) & 0xF8) | u8Page; + res = rtw_read8(padapter, REG_MCUFWDL + 2, &value8); + if (res) + return res; + + value8 = (value8 & 0xF8) | u8Page; rtw_write8(padapter, REG_MCUFWDL + 2, value8); return block_write(padapter, buffer, size); @@ -165,8 +180,12 @@ static int write_fw(struct adapter *padapter, u8 *buffer, u32 size) void rtw_reset_8051(struct adapter *padapter) { u8 val8; + int res; + + res = rtw_read8(padapter, REG_SYS_FUNC_EN + 1, &val8); + if (res) + return; - val8 = rtw_read8(padapter, REG_SYS_FUNC_EN + 1); rtw_write8(padapter, REG_SYS_FUNC_EN + 1, val8 & (~BIT(2))); rtw_write8(padapter, REG_SYS_FUNC_EN + 1, val8 | (BIT(2))); } @@ -240,12 +259,14 @@ int rtl8188e_firmware_download(struct adapter *padapter) { int ret = _SUCCESS; u8 write_fw_retry = 0; + u8 reg; unsigned long fwdl_timeout; struct dvobj_priv *dvobj = adapter_to_dvobj(padapter); struct device *device = dvobj_to_dev(dvobj); struct rt_firmware_hdr *fwhdr = NULL; u8 *fw_data; u32 fw_size; + int res; if (!dvobj->firmware.data) ret = load_firmware(&dvobj->firmware, device); @@ -269,7 +290,11 @@ int rtl8188e_firmware_download(struct adapter *padapter) /* Suggested by Filen. If 8051 is running in RAM code, driver should inform Fw to reset by itself, */ /* or it will cause download Fw fail. 2010.02.01. by tynli. */ - if (rtw_read8(padapter, REG_MCUFWDL) & RAM_DL_SEL) { /* 8051 RAM code */ + res = rtw_read8(padapter, REG_MCUFWDL, ®); + if (res) + goto exit; + + if (reg & RAM_DL_SEL) { /* 8051 RAM code */ rtw_write8(padapter, REG_MCUFWDL, 0x00); rtw_reset_8051(padapter); } @@ -278,7 +303,14 @@ int rtl8188e_firmware_download(struct adapter *padapter) fwdl_timeout = jiffies + msecs_to_jiffies(500); while (1) { /* reset the FWDL chksum */ - rtw_write8(padapter, REG_MCUFWDL, rtw_read8(padapter, REG_MCUFWDL) | FWDL_CHKSUM_RPT); + res = rtw_read8(padapter, REG_MCUFWDL, ®); + if (res == -ENODEV) + break; + + if (res) + continue; + + rtw_write8(padapter, REG_MCUFWDL, reg | FWDL_CHKSUM_RPT); ret = write_fw(padapter, fw_data, fw_size); diff --git a/drivers/staging/r8188eu/core/rtw_led.c b/drivers/staging/r8188eu/core/rtw_led.c index 2f3000428af7..b532e614c5b6 100644 --- a/drivers/staging/r8188eu/core/rtw_led.c +++ b/drivers/staging/r8188eu/core/rtw_led.c @@ -34,28 +34,38 @@ static void ResetLedStatus(struct LED_871x *pLed) static void SwLedOn(struct adapter *padapter, struct LED_871x *pLed) { - u8 LedCfg; + u8 LedCfg; + int res; if (padapter->bSurpriseRemoved || padapter->bDriverStopped) return; - LedCfg = rtw_read8(padapter, REG_LEDCFG2); + res = rtw_read8(padapter, REG_LEDCFG2, &LedCfg); + if (res) + return; + rtw_write8(padapter, REG_LEDCFG2, (LedCfg & 0xf0) | BIT(5) | BIT(6)); /* SW control led0 on. */ pLed->bLedOn = true; } static void SwLedOff(struct adapter *padapter, struct LED_871x *pLed) { - u8 LedCfg; + u8 LedCfg; + int res; if (padapter->bSurpriseRemoved || padapter->bDriverStopped) goto exit; - LedCfg = rtw_read8(padapter, REG_LEDCFG2);/* 0x4E */ + res = rtw_read8(padapter, REG_LEDCFG2, &LedCfg);/* 0x4E */ + if (res) + goto exit; LedCfg &= 0x90; /* Set to software control. */ rtw_write8(padapter, REG_LEDCFG2, (LedCfg | BIT(3))); - LedCfg = rtw_read8(padapter, REG_MAC_PINMUX_CFG); + res = rtw_read8(padapter, REG_MAC_PINMUX_CFG, &LedCfg); + if (res) + goto exit; + LedCfg &= 0xFE; rtw_write8(padapter, REG_MAC_PINMUX_CFG, LedCfg); exit: diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c index 848b5051aa13..d4e59fab367c 100644 --- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c +++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c @@ -5672,14 +5672,28 @@ unsigned int send_beacon(struct adapter *padapter) bool get_beacon_valid_bit(struct adapter *adapter) { + int res; + u8 reg; + + res = rtw_read8(adapter, REG_TDECTRL + 2, ®); + if (res) + return false; + /* BIT(16) of REG_TDECTRL = BIT(0) of REG_TDECTRL+2 */ - return BIT(0) & rtw_read8(adapter, REG_TDECTRL + 2); + return BIT(0) & reg; } void clear_beacon_valid_bit(struct adapter *adapter) { + int res; + u8 reg; + + res = rtw_read8(adapter, REG_TDECTRL + 2, ®); + if (res) + return; + /* BIT(16) of REG_TDECTRL = BIT(0) of REG_TDECTRL+2, write 1 to clear, Clear by sw */ - rtw_write8(adapter, REG_TDECTRL + 2, rtw_read8(adapter, REG_TDECTRL + 2) | BIT(0)); + rtw_write8(adapter, REG_TDECTRL + 2, reg | BIT(0)); } /**************************************************************************** @@ -6007,7 +6021,8 @@ static void rtw_set_bssid(struct adapter *adapter, u8 *bssid) static void mlme_join(struct adapter *adapter, int type) { struct mlme_priv *mlmepriv = &adapter->mlmepriv; - u8 retry_limit = 0x30; + u8 retry_limit = 0x30, reg; + int res; switch (type) { case 0: @@ -6032,7 +6047,11 @@ static void mlme_join(struct adapter *adapter, int type) case 2: /* sta add event call back */ /* enable update TSF */ - rtw_write8(adapter, REG_BCN_CTRL, rtw_read8(adapter, REG_BCN_CTRL) & (~BIT(4))); + res = rtw_read8(adapter, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(adapter, REG_BCN_CTRL, reg & (~BIT(4))); if (check_fwstate(mlmepriv, WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE)) retry_limit = 0x7; @@ -6753,6 +6772,9 @@ void mlmeext_sta_add_event_callback(struct adapter *padapter, struct sta_info *p static void mlme_disconnect(struct adapter *adapter) { + int res; + u8 reg; + /* Set RCR to not to receive data frame when NO LINK state */ /* reject all data frames */ rtw_write16(adapter, REG_RXFLTMAP2, 0x00); @@ -6761,7 +6783,12 @@ static void mlme_disconnect(struct adapter *adapter) rtw_write8(adapter, REG_DUAL_TSF_RST, (BIT(0) | BIT(1))); /* disable update TSF */ - rtw_write8(adapter, REG_BCN_CTRL, rtw_read8(adapter, REG_BCN_CTRL) | BIT(4)); + + res = rtw_read8(adapter, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(adapter, REG_BCN_CTRL, reg | BIT(4)); } void mlmeext_sta_del_event_callback(struct adapter *padapter) @@ -6818,11 +6845,15 @@ static u8 chk_ap_is_alive(struct sta_info *psta) static void rtl8188e_sreset_linked_status_check(struct adapter *padapter) { u32 rx_dma_status = rtw_read32(padapter, REG_RXDMA_STATUS); + int res; + u8 reg; if (rx_dma_status != 0x00) rtw_write32(padapter, REG_RXDMA_STATUS, rx_dma_status); - rtw_read8(padapter, REG_FMETHR); + /* FIXME: should this read be removed? */ + res = rtw_read8(padapter, REG_FMETHR, ®); + (void)res; } void linked_status_chk(struct adapter *padapter) @@ -7224,6 +7255,7 @@ u8 disconnect_hdl(struct adapter *padapter, unsigned char *pbuf) struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info; struct wlan_bssid_ex *pnetwork = (struct wlan_bssid_ex *)(&pmlmeinfo->network); u8 val8; + int res; if (is_client_associated_to_ap(padapter)) issue_deauth_ex(padapter, pnetwork->MacAddress, WLAN_REASON_DEAUTH_LEAVING, param->deauth_timeout_ms / 100, 100); @@ -7236,7 +7268,10 @@ u8 disconnect_hdl(struct adapter *padapter, unsigned char *pbuf) if (((pmlmeinfo->state & 0x03) == WIFI_FW_ADHOC_STATE) || ((pmlmeinfo->state & 0x03) == WIFI_FW_AP_STATE)) { /* Stop BCN */ - val8 = rtw_read8(padapter, REG_BCN_CTRL); + res = rtw_read8(padapter, REG_BCN_CTRL, &val8); + if (res) + return H2C_DROPPED; + rtw_write8(padapter, REG_BCN_CTRL, val8 & (~(EN_BCN_FUNCTION | EN_TXBCN_RPT))); } diff --git a/drivers/staging/r8188eu/core/rtw_wlan_util.c b/drivers/staging/r8188eu/core/rtw_wlan_util.c index 27035eac6e61..f5002c88a5ac 100644 --- a/drivers/staging/r8188eu/core/rtw_wlan_util.c +++ b/drivers/staging/r8188eu/core/rtw_wlan_util.c @@ -279,8 +279,13 @@ void Restore_DM_Func_Flag(struct adapter *padapter) void Set_MSR(struct adapter *padapter, u8 type) { u8 val8; + int res; - val8 = rtw_read8(padapter, MSR) & 0x0c; + res = rtw_read8(padapter, MSR, &val8); + if (res) + return; + + val8 &= 0x0c; val8 |= type; rtw_write8(padapter, MSR, val8); } @@ -505,7 +510,11 @@ int WMM_param_handler(struct adapter *padapter, struct ndis_802_11_var_ie *pIE) static void set_acm_ctrl(struct adapter *adapter, u8 acm_mask) { - u8 acmctrl = rtw_read8(adapter, REG_ACMHWCTRL); + u8 acmctrl; + int res = rtw_read8(adapter, REG_ACMHWCTRL, &acmctrl); + + if (res) + return; if (acm_mask > 1) acmctrl = acmctrl | 0x1; @@ -763,6 +772,7 @@ void HT_info_handler(struct adapter *padapter, struct ndis_802_11_var_ie *pIE) static void set_min_ampdu_spacing(struct adapter *adapter, u8 spacing) { u8 sec_spacing; + int res; if (spacing <= 7) { switch (adapter->securitypriv.dot11PrivacyAlgrthm) { @@ -784,8 +794,12 @@ static void set_min_ampdu_spacing(struct adapter *adapter, u8 spacing) if (spacing < sec_spacing) spacing = sec_spacing; + res = rtw_read8(adapter, REG_AMPDU_MIN_SPACE, &sec_spacing); + if (res) + return; + rtw_write8(adapter, REG_AMPDU_MIN_SPACE, - (rtw_read8(adapter, REG_AMPDU_MIN_SPACE) & 0xf8) | spacing); + (sec_spacing & 0xf8) | spacing); } } diff --git a/drivers/staging/r8188eu/hal/HalPhyRf_8188e.c b/drivers/staging/r8188eu/hal/HalPhyRf_8188e.c index b944c8071a3b..aa4b4459329e 100644 --- a/drivers/staging/r8188eu/hal/HalPhyRf_8188e.c +++ b/drivers/staging/r8188eu/hal/HalPhyRf_8188e.c @@ -470,9 +470,17 @@ static void _PHY_SaveMACRegisters( ) { u32 i; + int res; - for (i = 0; i < (IQK_MAC_REG_NUM - 1); i++) - MACBackup[i] = rtw_read8(adapt, MACReg[i]); + for (i = 0; i < (IQK_MAC_REG_NUM - 1); i++) { + u8 reg; + + res = rtw_read8(adapt, MACReg[i], ®); + if (res) + return; + + MACBackup[i] = reg; + } MACBackup[i] = rtw_read32(adapt, MACReg[i]); } @@ -739,9 +747,12 @@ static void phy_LCCalibrate_8188E(struct adapter *adapt) { u8 tmpreg; u32 RF_Amode = 0, LC_Cal; + int res; /* Check continuous TX and Packet TX */ - tmpreg = rtw_read8(adapt, 0xd03); + res = rtw_read8(adapt, 0xd03, &tmpreg); + if (res) + return; if ((tmpreg & 0x70) != 0) /* Deal with contisuous TX case */ rtw_write8(adapt, 0xd03, tmpreg & 0x8F); /* disable all continuous TX */ diff --git a/drivers/staging/r8188eu/hal/HalPwrSeqCmd.c b/drivers/staging/r8188eu/hal/HalPwrSeqCmd.c index 5b91aec6a7e3..fe2fe63dbc18 100644 --- a/drivers/staging/r8188eu/hal/HalPwrSeqCmd.c +++ b/drivers/staging/r8188eu/hal/HalPwrSeqCmd.c @@ -34,6 +34,7 @@ u8 HalPwrSeqCmdParsing(struct adapter *padapter, struct wl_pwr_cfg pwrseqcmd[]) u32 offset = 0; u32 poll_count = 0; /* polling autoload done. */ u32 max_poll_count = 5000; + int res; do { pwrcfgcmd = pwrseqcmd[aryidx]; @@ -43,7 +44,9 @@ u8 HalPwrSeqCmdParsing(struct adapter *padapter, struct wl_pwr_cfg pwrseqcmd[]) offset = GET_PWR_CFG_OFFSET(pwrcfgcmd); /* Read the value from system register */ - value = rtw_read8(padapter, offset); + res = rtw_read8(padapter, offset, &value); + if (res) + return false; value &= ~(GET_PWR_CFG_MASK(pwrcfgcmd)); value |= (GET_PWR_CFG_VALUE(pwrcfgcmd) & GET_PWR_CFG_MASK(pwrcfgcmd)); @@ -55,7 +58,9 @@ u8 HalPwrSeqCmdParsing(struct adapter *padapter, struct wl_pwr_cfg pwrseqcmd[]) poll_bit = false; offset = GET_PWR_CFG_OFFSET(pwrcfgcmd); do { - value = rtw_read8(padapter, offset); + res = rtw_read8(padapter, offset, &value); + if (res) + return false; value &= GET_PWR_CFG_MASK(pwrcfgcmd); if (value == (GET_PWR_CFG_VALUE(pwrcfgcmd) & GET_PWR_CFG_MASK(pwrcfgcmd))) diff --git a/drivers/staging/r8188eu/hal/hal_com.c b/drivers/staging/r8188eu/hal/hal_com.c index 910cc07f656c..7717ee722cce 100644 --- a/drivers/staging/r8188eu/hal/hal_com.c +++ b/drivers/staging/r8188eu/hal/hal_com.c @@ -297,13 +297,15 @@ s32 c2h_evt_read(struct adapter *adapter, u8 *buf) { s32 ret = _FAIL; struct c2h_evt_hdr *c2h_evt; - int i; + int i, res; u8 trigger; if (!buf) goto exit; - trigger = rtw_read8(adapter, REG_C2HEVT_CLEAR); + res = rtw_read8(adapter, REG_C2HEVT_CLEAR, &trigger); + if (res) + return _FAIL; if (trigger == C2H_EVT_HOST_CLOSE) goto exit; /* Not ready */ @@ -314,13 +316,21 @@ s32 c2h_evt_read(struct adapter *adapter, u8 *buf) memset(c2h_evt, 0, 16); - *buf = rtw_read8(adapter, REG_C2HEVT_MSG_NORMAL); - *(buf + 1) = rtw_read8(adapter, REG_C2HEVT_MSG_NORMAL + 1); + res = rtw_read8(adapter, REG_C2HEVT_MSG_NORMAL, buf); + if (res) + return _FAIL; + + res = rtw_read8(adapter, REG_C2HEVT_MSG_NORMAL + 1, buf + 1); + if (res) + return _FAIL; /* Read the content */ - for (i = 0; i < c2h_evt->plen; i++) - c2h_evt->payload[i] = rtw_read8(adapter, REG_C2HEVT_MSG_NORMAL + - sizeof(*c2h_evt) + i); + for (i = 0; i < c2h_evt->plen; i++) { + res = rtw_read8(adapter, REG_C2HEVT_MSG_NORMAL + + sizeof(*c2h_evt) + i, c2h_evt->payload + i); + if (res) + return _FAIL; + } ret = _SUCCESS; diff --git a/drivers/staging/r8188eu/hal/rtl8188e_cmd.c b/drivers/staging/r8188eu/hal/rtl8188e_cmd.c index 475650dc7301..b01ee1695fee 100644 --- a/drivers/staging/r8188eu/hal/rtl8188e_cmd.c +++ b/drivers/staging/r8188eu/hal/rtl8188e_cmd.c @@ -18,13 +18,18 @@ static u8 _is_fw_read_cmd_down(struct adapter *adapt, u8 msgbox_num) { - u8 read_down = false; + u8 read_down = false, reg; int retry_cnts = 100; + int res; u8 valid; do { - valid = rtw_read8(adapt, REG_HMETFR) & BIT(msgbox_num); + res = rtw_read8(adapt, REG_HMETFR, ®); + if (res) + continue; + + valid = reg & BIT(msgbox_num); if (0 == valid) read_down = true; } while ((!read_down) && (retry_cnts--)); @@ -533,6 +538,8 @@ void rtl8188e_set_FwJoinBssReport_cmd(struct adapter *adapt, u8 mstatus) bool bcn_valid = false; u8 DLBcnCount = 0; u32 poll = 0; + u8 reg; + int res; if (mstatus == 1) { /* We should set AID, correct TSF, HW seq enable before set JoinBssReport to Fw in 88/92C. */ @@ -547,8 +554,17 @@ void rtl8188e_set_FwJoinBssReport_cmd(struct adapter *adapt, u8 mstatus) /* Disable Hw protection for a time which revserd for Hw sending beacon. */ /* Fix download reserved page packet fail that access collision with the protection time. */ /* 2010.05.11. Added by tynli. */ - rtw_write8(adapt, REG_BCN_CTRL, rtw_read8(adapt, REG_BCN_CTRL) & (~BIT(3))); - rtw_write8(adapt, REG_BCN_CTRL, rtw_read8(adapt, REG_BCN_CTRL) | BIT(4)); + res = rtw_read8(adapt, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(adapt, REG_BCN_CTRL, reg & (~BIT(3))); + + res = rtw_read8(adapt, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(adapt, REG_BCN_CTRL, reg | BIT(4)); if (haldata->RegFwHwTxQCtrl & BIT(6)) bSendBeacon = true; @@ -581,8 +597,17 @@ void rtl8188e_set_FwJoinBssReport_cmd(struct adapter *adapt, u8 mstatus) /* */ /* Enable Bcn */ - rtw_write8(adapt, REG_BCN_CTRL, rtw_read8(adapt, REG_BCN_CTRL) | BIT(3)); - rtw_write8(adapt, REG_BCN_CTRL, rtw_read8(adapt, REG_BCN_CTRL) & (~BIT(4))); + res = rtw_read8(adapt, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(adapt, REG_BCN_CTRL, reg | BIT(3)); + + res = rtw_read8(adapt, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(adapt, REG_BCN_CTRL, reg & (~BIT(4))); /* To make sure that if there exists an adapter which would like to send beacon. */ /* If exists, the origianl value of 0x422[6] will be 1, we should check this to */ diff --git a/drivers/staging/r8188eu/hal/rtl8188e_dm.c b/drivers/staging/r8188eu/hal/rtl8188e_dm.c index 6d28e3dc0d26..0399872c4546 100644 --- a/drivers/staging/r8188eu/hal/rtl8188e_dm.c +++ b/drivers/staging/r8188eu/hal/rtl8188e_dm.c @@ -12,8 +12,12 @@ static void dm_InitGPIOSetting(struct adapter *Adapter) { u8 tmp1byte; + int res; + + res = rtw_read8(Adapter, REG_GPIO_MUXCFG, &tmp1byte); + if (res) + return; - tmp1byte = rtw_read8(Adapter, REG_GPIO_MUXCFG); tmp1byte &= (GPIOSEL_GPIO | ~GPIOSEL_ENBT); rtw_write8(Adapter, REG_GPIO_MUXCFG, tmp1byte); diff --git a/drivers/staging/r8188eu/hal/rtl8188e_hal_init.c b/drivers/staging/r8188eu/hal/rtl8188e_hal_init.c index e17375a74f17..e67ecbd1ba79 100644 --- a/drivers/staging/r8188eu/hal/rtl8188e_hal_init.c +++ b/drivers/staging/r8188eu/hal/rtl8188e_hal_init.c @@ -13,10 +13,14 @@ static void iol_mode_enable(struct adapter *padapter, u8 enable) { u8 reg_0xf0 = 0; + int res; if (enable) { /* Enable initial offload */ - reg_0xf0 = rtw_read8(padapter, REG_SYS_CFG); + res = rtw_read8(padapter, REG_SYS_CFG, ®_0xf0); + if (res) + return; + rtw_write8(padapter, REG_SYS_CFG, reg_0xf0 | SW_OFFLOAD_EN); if (!padapter->bFWReady) @@ -24,7 +28,10 @@ static void iol_mode_enable(struct adapter *padapter, u8 enable) } else { /* disable initial offload */ - reg_0xf0 = rtw_read8(padapter, REG_SYS_CFG); + res = rtw_read8(padapter, REG_SYS_CFG, ®_0xf0); + if (res) + return; + rtw_write8(padapter, REG_SYS_CFG, reg_0xf0 & ~SW_OFFLOAD_EN); } } @@ -34,17 +41,31 @@ static s32 iol_execute(struct adapter *padapter, u8 control) s32 status = _FAIL; u8 reg_0x88 = 0; unsigned long timeout; + int res; control = control & 0x0f; - reg_0x88 = rtw_read8(padapter, REG_HMEBOX_E0); + res = rtw_read8(padapter, REG_HMEBOX_E0, ®_0x88); + if (res) + return _FAIL; + rtw_write8(padapter, REG_HMEBOX_E0, reg_0x88 | control); timeout = jiffies + msecs_to_jiffies(1000); - while ((reg_0x88 = rtw_read8(padapter, REG_HMEBOX_E0)) & control && - time_before(jiffies, timeout)) - ; - reg_0x88 = rtw_read8(padapter, REG_HMEBOX_E0); + do { + res = rtw_read8(padapter, REG_HMEBOX_E0, ®_0x88); + if (res) + continue; + + if (!(reg_0x88 & control)) + break; + + } while (time_before(jiffies, timeout)); + + res = rtw_read8(padapter, REG_HMEBOX_E0, ®_0x88); + if (res) + return _FAIL; + status = (reg_0x88 & control) ? _FAIL : _SUCCESS; if (reg_0x88 & control << 4) status = _FAIL; @@ -190,13 +211,18 @@ static void efuse_read_phymap_from_txpktbuf( u16 dbg_addr = 0; __le32 lo32 = 0, hi32 = 0; u16 len = 0, count = 0; - int i = 0; + int i = 0, res; u16 limit = *size; - + u8 reg; u8 *pos = content; - if (bcnhead < 0) /* if not valid */ - bcnhead = rtw_read8(adapter, REG_TDECTRL + 1); + if (bcnhead < 0) { /* if not valid */ + res = rtw_read8(adapter, REG_TDECTRL + 1, ®); + if (res) + return; + + bcnhead = reg; + } rtw_write8(adapter, REG_PKT_BUFF_ACCESS_CTRL, TXPKT_BUF_SELECT); @@ -207,8 +233,16 @@ static void efuse_read_phymap_from_txpktbuf( rtw_write8(adapter, REG_TXPKTBUF_DBG, 0); timeout = jiffies + msecs_to_jiffies(1000); - while (!rtw_read8(adapter, REG_TXPKTBUF_DBG) && time_before(jiffies, timeout)) + do { + res = rtw_read8(adapter, REG_TXPKTBUF_DBG, ®); + if (res) + continue; + + if (reg) + break; + rtw_usleep_os(100); + } while (time_before(jiffies, timeout)); /* data from EEPROM needs to be in LE */ lo32 = cpu_to_le32(rtw_read32(adapter, REG_PKTBUF_DBG_DATA_L)); @@ -525,10 +559,17 @@ void rtl8188e_SetHalODMVar(struct adapter *Adapter, void *pValue1, bool bSet) void hal_notch_filter_8188e(struct adapter *adapter, bool enable) { + int res; + u8 reg; + + res = rtw_read8(adapter, rOFDM0_RxDSP + 1, ®); + if (res) + return; + if (enable) - rtw_write8(adapter, rOFDM0_RxDSP + 1, rtw_read8(adapter, rOFDM0_RxDSP + 1) | BIT(1)); + rtw_write8(adapter, rOFDM0_RxDSP + 1, reg | BIT(1)); else - rtw_write8(adapter, rOFDM0_RxDSP + 1, rtw_read8(adapter, rOFDM0_RxDSP + 1) & ~BIT(1)); + rtw_write8(adapter, rOFDM0_RxDSP + 1, reg & ~BIT(1)); } /* */ diff --git a/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c b/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c index 4864dafd887b..985339a974fc 100644 --- a/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c +++ b/drivers/staging/r8188eu/hal/rtl8188e_phycfg.c @@ -594,6 +594,7 @@ _PHY_SetBWMode92C( struct hal_data_8188e *pHalData = &Adapter->haldata; u8 regBwOpMode; u8 regRRSR_RSC; + int res; if (Adapter->bDriverStopped) return; @@ -602,8 +603,13 @@ _PHY_SetBWMode92C( /* 3<1>Set MAC register */ /* 3 */ - regBwOpMode = rtw_read8(Adapter, REG_BWOPMODE); - regRRSR_RSC = rtw_read8(Adapter, REG_RRSR + 2); + res = rtw_read8(Adapter, REG_BWOPMODE, ®BwOpMode); + if (res) + return; + + res = rtw_read8(Adapter, REG_RRSR + 2, ®RRSR_RSC); + if (res) + return; switch (pHalData->CurrentChannelBW) { case HT_CHANNEL_WIDTH_20: diff --git a/drivers/staging/r8188eu/hal/usb_halinit.c b/drivers/staging/r8188eu/hal/usb_halinit.c index b62ebd011886..6e3c8af5c4e7 100644 --- a/drivers/staging/r8188eu/hal/usb_halinit.c +++ b/drivers/staging/r8188eu/hal/usb_halinit.c @@ -81,6 +81,7 @@ static void _InitInterrupt(struct adapter *Adapter) { u32 imr, imr_ex; u8 usb_opt; + int res; /* HISR write one to clear */ rtw_write32(Adapter, REG_HISR_88E, 0xFFFFFFFF); @@ -94,7 +95,9 @@ static void _InitInterrupt(struct adapter *Adapter) /* REG_USB_SPECIAL_OPTION - BIT(4) */ /* 0; Use interrupt endpoint to upload interrupt pkt */ /* 1; Use bulk endpoint to upload interrupt pkt, */ - usb_opt = rtw_read8(Adapter, REG_USB_SPECIAL_OPTION); + res = rtw_read8(Adapter, REG_USB_SPECIAL_OPTION, &usb_opt); + if (res) + return; if (adapter_to_dvobj(Adapter)->pusbdev->speed == USB_SPEED_HIGH) usb_opt = usb_opt | (INT_BULK_SEL); @@ -363,8 +366,12 @@ static void _InitEDCA(struct adapter *Adapter) static void _InitRetryFunction(struct adapter *Adapter) { u8 value8; + int res; + + res = rtw_read8(Adapter, REG_FWHW_TXQ_CTRL, &value8); + if (res) + return; - value8 = rtw_read8(Adapter, REG_FWHW_TXQ_CTRL); value8 |= EN_AMPDU_RTY_NEW; rtw_write8(Adapter, REG_FWHW_TXQ_CTRL, value8); @@ -423,9 +430,15 @@ usb_AggSettingRxUpdate( { u8 valueDMA; u8 valueUSB; + int res; - valueDMA = rtw_read8(Adapter, REG_TRXDMA_CTRL); - valueUSB = rtw_read8(Adapter, REG_USB_SPECIAL_OPTION); + res = rtw_read8(Adapter, REG_TRXDMA_CTRL, &valueDMA); + if (res) + return; + + res = rtw_read8(Adapter, REG_USB_SPECIAL_OPTION, &valueUSB); + if (res) + return; valueDMA |= RXDMA_AGG_EN; valueUSB &= ~USB_AGG_EN; @@ -449,6 +462,7 @@ static void InitUsbAggregationSetting(struct adapter *Adapter) static void _InitBeaconParameters(struct adapter *Adapter) { struct hal_data_8188e *haldata = &Adapter->haldata; + int res; rtw_write16(Adapter, REG_BCN_CTRL, 0x1010); @@ -461,9 +475,10 @@ static void _InitBeaconParameters(struct adapter *Adapter) /* beacause test chip does not contension before sending beacon. by tynli. 2009.11.03 */ rtw_write16(Adapter, REG_BCNTCFG, 0x660F); - haldata->RegFwHwTxQCtrl = rtw_read8(Adapter, REG_FWHW_TXQ_CTRL + 2); - haldata->RegReg542 = rtw_read8(Adapter, REG_TBTT_PROHIBIT + 2); - haldata->RegCR_1 = rtw_read8(Adapter, REG_CR + 1); + /* FIXME: return an error to caller */ + res = rtw_read8(Adapter, REG_FWHW_TXQ_CTRL + 2, &haldata->RegFwHwTxQCtrl); + res = rtw_read8(Adapter, REG_TBTT_PROHIBIT + 2, &haldata->RegReg542); + res = rtw_read8(Adapter, REG_CR + 1, &haldata->RegCR_1); } static void _BeaconFunctionEnable(struct adapter *Adapter, @@ -514,6 +529,7 @@ u32 rtl8188eu_hal_init(struct adapter *Adapter) u16 value16; u8 txpktbuf_bndy; u32 status = _SUCCESS; + int res; struct hal_data_8188e *haldata = &Adapter->haldata; struct pwrctrl_priv *pwrctrlpriv = &Adapter->pwrctrlpriv; struct registry_priv *pregistrypriv = &Adapter->registrypriv; @@ -620,7 +636,10 @@ u32 rtl8188eu_hal_init(struct adapter *Adapter) /* Enable TX Report */ /* Enable Tx Report Timer */ - value8 = rtw_read8(Adapter, REG_TX_RPT_CTRL); + res = rtw_read8(Adapter, REG_TX_RPT_CTRL, &value8); + if (res) + return _FAIL; + rtw_write8(Adapter, REG_TX_RPT_CTRL, (value8 | BIT(1) | BIT(0))); /* Set MAX RPT MACID */ rtw_write8(Adapter, REG_TX_RPT_CTRL + 1, 2);/* FOR sta mode ,0: bc/mc ,1:AP */ @@ -714,9 +733,13 @@ static void CardDisableRTL8188EU(struct adapter *Adapter) { u8 val8; struct hal_data_8188e *haldata = &Adapter->haldata; + int res; /* Stop Tx Report Timer. 0x4EC[Bit1]=b'0 */ - val8 = rtw_read8(Adapter, REG_TX_RPT_CTRL); + res = rtw_read8(Adapter, REG_TX_RPT_CTRL, &val8); + if (res) + return; + rtw_write8(Adapter, REG_TX_RPT_CTRL, val8 & (~BIT(1))); /* stop rx */ @@ -727,10 +750,16 @@ static void CardDisableRTL8188EU(struct adapter *Adapter) /* 2. 0x1F[7:0] = 0 turn off RF */ - val8 = rtw_read8(Adapter, REG_MCUFWDL); + res = rtw_read8(Adapter, REG_MCUFWDL, &val8); + if (res) + return; + if ((val8 & RAM_DL_SEL) && Adapter->bFWReady) { /* 8051 RAM code */ /* Reset MCU 0x2[10]=0. */ - val8 = rtw_read8(Adapter, REG_SYS_FUNC_EN + 1); + res = rtw_read8(Adapter, REG_SYS_FUNC_EN + 1, &val8); + if (res) + return; + val8 &= ~BIT(2); /* 0x2[10], FEN_CPUEN */ rtw_write8(Adapter, REG_SYS_FUNC_EN + 1, val8); } @@ -740,26 +769,45 @@ static void CardDisableRTL8188EU(struct adapter *Adapter) /* YJ,add,111212 */ /* Disable 32k */ - val8 = rtw_read8(Adapter, REG_32K_CTRL); + res = rtw_read8(Adapter, REG_32K_CTRL, &val8); + if (res) + return; + rtw_write8(Adapter, REG_32K_CTRL, val8 & (~BIT(0))); /* Card disable power action flow */ HalPwrSeqCmdParsing(Adapter, Rtl8188E_NIC_DISABLE_FLOW); /* Reset MCU IO Wrapper */ - val8 = rtw_read8(Adapter, REG_RSV_CTRL + 1); + res = rtw_read8(Adapter, REG_RSV_CTRL + 1, &val8); + if (res) + return; + rtw_write8(Adapter, REG_RSV_CTRL + 1, (val8 & (~BIT(3)))); - val8 = rtw_read8(Adapter, REG_RSV_CTRL + 1); + + res = rtw_read8(Adapter, REG_RSV_CTRL + 1, &val8); + if (res) + return; + rtw_write8(Adapter, REG_RSV_CTRL + 1, val8 | BIT(3)); /* YJ,test add, 111207. For Power Consumption. */ - val8 = rtw_read8(Adapter, GPIO_IN); + res = rtw_read8(Adapter, GPIO_IN, &val8); + if (res) + return; + rtw_write8(Adapter, GPIO_OUT, val8); rtw_write8(Adapter, GPIO_IO_SEL, 0xFF);/* Reg0x46 */ - val8 = rtw_read8(Adapter, REG_GPIO_IO_SEL); + res = rtw_read8(Adapter, REG_GPIO_IO_SEL, &val8); + if (res) + return; + rtw_write8(Adapter, REG_GPIO_IO_SEL, (val8 << 4)); - val8 = rtw_read8(Adapter, REG_GPIO_IO_SEL + 1); + res = rtw_read8(Adapter, REG_GPIO_IO_SEL + 1, &val8); + if (res) + return; + rtw_write8(Adapter, REG_GPIO_IO_SEL + 1, val8 | 0x0F);/* Reg0x43 */ rtw_write32(Adapter, REG_BB_PAD_CTRL, 0x00080808);/* set LNA ,TRSW,EX_PA Pin to output mode */ haldata->bMacPwrCtrlOn = false; @@ -830,9 +878,13 @@ void ReadAdapterInfo8188EU(struct adapter *Adapter) struct eeprom_priv *eeprom = &Adapter->eeprompriv; struct led_priv *ledpriv = &Adapter->ledpriv; u8 eeValue; + int res; /* check system boot selection */ - eeValue = rtw_read8(Adapter, REG_9346CR); + res = rtw_read8(Adapter, REG_9346CR, &eeValue); + if (res) + return; + eeprom->EepromOrEfuse = (eeValue & BOOT_FROM_EEPROM); eeprom->bautoload_fail_flag = !(eeValue & EEPROM_EN); @@ -887,12 +939,21 @@ static void hw_var_set_opmode(struct adapter *Adapter, u8 *val) { u8 val8; u8 mode = *((u8 *)val); + int res; /* disable Port0 TSF update */ - rtw_write8(Adapter, REG_BCN_CTRL, rtw_read8(Adapter, REG_BCN_CTRL) | BIT(4)); + res = rtw_read8(Adapter, REG_BCN_CTRL, &val8); + if (res) + return; + + rtw_write8(Adapter, REG_BCN_CTRL, val8 | BIT(4)); /* set net_type */ - val8 = rtw_read8(Adapter, MSR) & 0x0c; + res = rtw_read8(Adapter, MSR, &val8); + if (res) + return; + + val8 &= 0x0c; val8 |= mode; rtw_write8(Adapter, MSR, val8); @@ -927,14 +988,22 @@ static void hw_var_set_opmode(struct adapter *Adapter, u8 *val) rtw_write8(Adapter, REG_DUAL_TSF_RST, BIT(0)); /* BIT(3) - If set 0, hw will clr bcnq when tx becon ok/fail or port 0 */ - rtw_write8(Adapter, REG_MBID_NUM, rtw_read8(Adapter, REG_MBID_NUM) | BIT(3) | BIT(4)); + res = rtw_read8(Adapter, REG_MBID_NUM, &val8); + if (res) + return; + + rtw_write8(Adapter, REG_MBID_NUM, val8 | BIT(3) | BIT(4)); /* enable BCN0 Function for if1 */ /* don't enable update TSF0 for if1 (due to TSF update when beacon/probe rsp are received) */ rtw_write8(Adapter, REG_BCN_CTRL, (DIS_TSF_UDT0_NORMAL_CHIP | EN_BCN_FUNCTION | BIT(1))); /* dis BCN1 ATIM WND if if2 is station */ - rtw_write8(Adapter, REG_BCN_CTRL_1, rtw_read8(Adapter, REG_BCN_CTRL_1) | BIT(0)); + res = rtw_read8(Adapter, REG_BCN_CTRL_1, &val8); + if (res) + return; + + rtw_write8(Adapter, REG_BCN_CTRL_1, val8 | BIT(0)); } } @@ -943,6 +1012,8 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val) struct hal_data_8188e *haldata = &Adapter->haldata; struct dm_priv *pdmpriv = &haldata->dmpriv; struct odm_dm_struct *podmpriv = &haldata->odmpriv; + u8 reg; + int res; switch (variable) { case HW_VAR_SET_OPMODE: @@ -970,7 +1041,11 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val) /* Set RRSR rate table. */ rtw_write8(Adapter, REG_RRSR, BrateCfg & 0xff); rtw_write8(Adapter, REG_RRSR + 1, (BrateCfg >> 8) & 0xff); - rtw_write8(Adapter, REG_RRSR + 2, rtw_read8(Adapter, REG_RRSR + 2) & 0xf0); + res = rtw_read8(Adapter, REG_RRSR + 2, ®); + if (res) + return; + + rtw_write8(Adapter, REG_RRSR + 2, reg & 0xf0); /* Set RTS initial rate */ while (BrateCfg > 0x1) { @@ -994,13 +1069,21 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val) StopTxBeacon(Adapter); /* disable related TSF function */ - rtw_write8(Adapter, REG_BCN_CTRL, rtw_read8(Adapter, REG_BCN_CTRL) & (~BIT(3))); + res = rtw_read8(Adapter, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(Adapter, REG_BCN_CTRL, reg & (~BIT(3))); rtw_write32(Adapter, REG_TSFTR, tsf); rtw_write32(Adapter, REG_TSFTR + 4, tsf >> 32); /* enable related TSF function */ - rtw_write8(Adapter, REG_BCN_CTRL, rtw_read8(Adapter, REG_BCN_CTRL) | BIT(3)); + res = rtw_read8(Adapter, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(Adapter, REG_BCN_CTRL, reg | BIT(3)); if (((pmlmeinfo->state & 0x03) == WIFI_FW_ADHOC_STATE) || ((pmlmeinfo->state & 0x03) == WIFI_FW_AP_STATE)) ResumeTxBeacon(Adapter); @@ -1016,7 +1099,11 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val) rtw_write16(Adapter, REG_RXFLTMAP2, 0x00); /* disable update TSF */ - rtw_write8(Adapter, REG_BCN_CTRL, rtw_read8(Adapter, REG_BCN_CTRL) | BIT(4)); + res = rtw_read8(Adapter, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(Adapter, REG_BCN_CTRL, reg | BIT(4)); } else { /* sitesurvey done */ struct mlme_ext_priv *pmlmeext = &Adapter->mlmeextpriv; struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info; @@ -1027,11 +1114,19 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val) rtw_write16(Adapter, REG_RXFLTMAP2, 0xFFFF); /* enable update TSF */ - rtw_write8(Adapter, REG_BCN_CTRL, rtw_read8(Adapter, REG_BCN_CTRL) & (~BIT(4))); + res = rtw_read8(Adapter, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(Adapter, REG_BCN_CTRL, reg & (~BIT(4))); } else if ((pmlmeinfo->state & 0x03) == WIFI_FW_AP_STATE) { rtw_write16(Adapter, REG_RXFLTMAP2, 0xFFFF); /* enable update TSF */ - rtw_write8(Adapter, REG_BCN_CTRL, rtw_read8(Adapter, REG_BCN_CTRL) & (~BIT(4))); + res = rtw_read8(Adapter, REG_BCN_CTRL, ®); + if (res) + return; + + rtw_write8(Adapter, REG_BCN_CTRL, reg & (~BIT(4))); } rtw_write32(Adapter, REG_RCR, rtw_read32(Adapter, REG_RCR) | RCR_CBSSID_BCN); } @@ -1194,6 +1289,8 @@ void SetBeaconRelatedRegisters8188EUsb(struct adapter *adapt) struct mlme_ext_priv *pmlmeext = &adapt->mlmeextpriv; struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info; u32 bcn_ctrl_reg = REG_BCN_CTRL; + int res; + u8 reg; /* reset TSF, enable update TSF, correcting TSF On Beacon */ /* BCN interval */ @@ -1219,7 +1316,11 @@ void SetBeaconRelatedRegisters8188EUsb(struct adapter *adapt) ResumeTxBeacon(adapt); - rtw_write8(adapt, bcn_ctrl_reg, rtw_read8(adapt, bcn_ctrl_reg) | BIT(1)); + res = rtw_read8(adapt, bcn_ctrl_reg, ®); + if (res) + return; + + rtw_write8(adapt, bcn_ctrl_reg, reg | BIT(1)); } void rtl8188eu_init_default_value(struct adapter *adapt) diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c index d5e674542a78..f399a7fd8b97 100644 --- a/drivers/staging/r8188eu/hal/usb_ops_linux.c +++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c @@ -94,16 +94,13 @@ static int usb_write(struct intf_hdl *intf, u16 value, void *data, u8 size) return status; } -u8 rtw_read8(struct adapter *adapter, u32 addr) +int __must_check rtw_read8(struct adapter *adapter, u32 addr, u8 *data) { struct io_priv *io_priv = &adapter->iopriv; struct intf_hdl *intf = &io_priv->intf; u16 value = addr & 0xffff; - u8 data; - usb_read(intf, value, &data, 1); - - return data; + return usb_read(intf, value, data, 1); } u16 rtw_read16(struct adapter *adapter, u32 addr) diff --git a/drivers/staging/r8188eu/include/rtw_io.h b/drivers/staging/r8188eu/include/rtw_io.h index 6910e2b430e2..1198d3850a6d 100644 --- a/drivers/staging/r8188eu/include/rtw_io.h +++ b/drivers/staging/r8188eu/include/rtw_io.h @@ -220,7 +220,7 @@ void unregister_intf_hdl(struct intf_hdl *pintfhdl); void _rtw_attrib_read(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem); void _rtw_attrib_write(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem); -u8 rtw_read8(struct adapter *adapter, u32 addr); +int __must_check rtw_read8(struct adapter *adapter, u32 addr, u8 *data); u16 rtw_read16(struct adapter *adapter, u32 addr); u32 rtw_read32(struct adapter *adapter, u32 addr); void _rtw_read_mem(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem); diff --git a/drivers/staging/r8188eu/os_dep/ioctl_linux.c b/drivers/staging/r8188eu/os_dep/ioctl_linux.c index 42cb79cee2ae..66aac2cbe3a9 100644 --- a/drivers/staging/r8188eu/os_dep/ioctl_linux.c +++ b/drivers/staging/r8188eu/os_dep/ioctl_linux.c @@ -1912,8 +1912,11 @@ static int rtw_wx_read32(struct net_device *dev, switch (bytes) { case 1: - data32 = rtw_read8(padapter, addr); - sprintf(extra, "0x%02X", data32); + ret = rtw_read8(padapter, addr, (u8 *) &data32); + if (ret) + goto err_free_ptmp; + + sprintf(extra, "0x%02X", data32 & 0xff); break; case 2: data32 = rtw_read16(padapter, addr); @@ -3259,6 +3262,7 @@ static void rtw_set_dynamic_functions(struct adapter *adapter, u8 dm_func) { struct hal_data_8188e *haldata = &adapter->haldata; struct odm_dm_struct *odmpriv = &haldata->odmpriv; + int res; switch (dm_func) { case 0: @@ -3274,7 +3278,9 @@ static void rtw_set_dynamic_functions(struct adapter *adapter, u8 dm_func) if (!(odmpriv->SupportAbility & DYNAMIC_BB_DIG)) { struct rtw_dig *digtable = &odmpriv->DM_DigTable; - digtable->CurIGValue = rtw_read8(adapter, 0xc50); + res = rtw_read8(adapter, 0xc50, &digtable->CurIGValue); + (void) res; + /* FIXME: return an error to caller */ } odmpriv->SupportAbility = DYNAMIC_ALL_FUNC_ENABLE; break; @@ -3410,8 +3416,9 @@ static int rtw_dbg_port(struct net_device *dev, u16 reg = arg; u16 start_value = 0; u32 write_num = extra_arg; - int i; + int i, res; struct xmit_frame *xmit_frame; + u8 val8; xmit_frame = rtw_IOL_accquire_xmit_frame(padapter); if (!xmit_frame) { @@ -3424,7 +3431,8 @@ static int rtw_dbg_port(struct net_device *dev, if (rtl8188e_IOL_exec_cmds_sync(padapter, xmit_frame, 5000, 0) != _SUCCESS) ret = -EPERM; - rtw_read8(padapter, reg); + /* FIXME: is this read necessary? */ + res = rtw_read8(padapter, reg, &val8); } break; -- 2.36.1