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rtl8192cu: Fix missing firmware load 

In commit 3ac5e26a1e 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 <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2011-06-21 10:48:31 -05:00 committed by John W. Linville
parent fa7ccfb170
commit 9935d12651
1 changed files with 20 additions and 0 deletions
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20
drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
View File

@ -53,6 +53,8 @@ MODULE_FIRMWARE("rtlwifi/rtl8192cufw.bin");
static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw) static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
{ {
struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_priv *rtlpriv = rtl_priv(hw);
const struct firmware *firmware;
int err;
rtlpriv->dm.dm_initialgain_enable = 1; rtlpriv->dm.dm_initialgain_enable = 1;
rtlpriv->dm.dm_flag = 0; 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")); ("Can't alloc buffer for fw.\n"));
return 1; 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; return 0;
} }