From 9935d12651c9e54ad266e17cd542ec717ccd0fc8 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Tue, 21 Jun 2011 10:48:31 -0500 Subject: [PATCH] rtl8192cu: Fix missing firmware load In commit 3ac5e26a1e935469a8bdae1d624bc3b59d1fcdc5 entitled "rtlwifi: rtl8192c-common: Change common firmware routines for addition of rtl8192se and rtl8192de", the firmware loading code was moved. Unfortunately, some necessary code was dropped for rtl8192cu. The dmesg output shows the following: rtl8192c: Loading firmware file rtlwifi/rtl8192cufw.bin rtl8192c_common:_rtl92c_fw_free_to_go():<0-0> Polling FW ready fail!! REG_MCUFWDL:0x00000006 . rtl8192c_common:rtl92c_download_fw():<0-0> Firmware is not ready to run! In addition, the interface will authenticate and associate, but cannot transfer data. This is reported as Kernel Bug #38012. Signed-off-by: Larry Finger Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/rtl8192cu/sw.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c index bee7c1480f63..092e342c19df 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c @@ -53,6 +53,8 @@ MODULE_FIRMWARE("rtlwifi/rtl8192cufw.bin"); static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw) { struct rtl_priv *rtlpriv = rtl_priv(hw); + const struct firmware *firmware; + int err; rtlpriv->dm.dm_initialgain_enable = 1; rtlpriv->dm.dm_flag = 0; @@ -64,6 +66,24 @@ static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw) ("Can't alloc buffer for fw.\n")); return 1; } + /* request fw */ + err = request_firmware(&firmware, rtlpriv->cfg->fw_name, + rtlpriv->io.dev); + if (err) { + RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, + ("Failed to request firmware!\n")); + return 1; + } + if (firmware->size > 0x4000) { + RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, + ("Firmware is too big!\n")); + release_firmware(firmware); + return 1; + } + memcpy(rtlpriv->rtlhal.pfirmware, firmware->data, firmware->size); + rtlpriv->rtlhal.fwsize = firmware->size; + release_firmware(firmware); + return 0; } -- 2.20.1