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rtlwifi: Convert to asynchronous firmware load

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This patch addresses a kernel bugzilla report and two recent mail threads.

The kernel bugzilla report is https://bugzilla.kernel.org/show_bug.cgi?id=42632,
which reports a udev timeout on boot.

The first mail thread, which was on LKML (http://lkml.indiana.edu/hypermail/
linux/kernel/1112.3/00965.html) was for a WARNING that occurs after a
suspend/resume cycle for rtl8192cu.

The scond mail thread (http://marc.info/?l=linux-wireless&m=132655490826766&w=2)
concerned changes in udev that break drivers that delay while firmware is loaded
on modprobe.

This patch converts all rtlwifi-based drivers to use the asynchronous firmware
loading mechanism. Drivers rtl8192ce, rtl8192cu and rtl8192de share a common
callback routine. Driver rtl8192se needs different handling of the firmware,
thus it has its own code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger
2012-01-30 09:54:49 -06:00
committed by John W. Linville
parent feced2012e
commit b0302aba81
20 changed files with 194 additions and 164 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
View File

@@ -53,7 +53,6 @@ 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 = true;
@@ -61,29 +60,21 @@ static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
rtlpriv->dm.disable_framebursting = false;
rtlpriv->dm.thermalvalue = 0;
rtlpriv->dbg.global_debuglevel = rtlpriv->cfg->mod_params->debug;
rtlpriv->rtlhal.pfirmware = vmalloc(0x4000);
/* for firmware buf */
rtlpriv->rtlhal.pfirmware = vzalloc(0x4000);
if (!rtlpriv->rtlhal.pfirmware) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
"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);
pr_info("Loading firmware %s\n", rtlpriv->cfg->fw_name);
rtlpriv->max_fw_size = 0x4000;
err = request_firmware_nowait(THIS_MODULE, 1,
rtlpriv->cfg->fw_name, rtlpriv->io.dev,
GFP_KERNEL, hw, rtl_fw_cb);
return 0;
}