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rtlwifi: fix for race condition when firmware is cached 

In commit b0302ab, the rtlwifi family of drivers was converted to use
asynchronous firmware loading. Unfortumately, the implementation was
racy, and the ieee80211 routines could be started before rtl_init_core()
was called to setup the data.

This patch fixes the bug noted in https://bugzilla.kernel.org/show_bug.cgi?id=43187.

Reported-by: Joshua Roys <Joshua.Roys@gtri.gatech.edu>
Tested-by: Neptune Ning <frostyplanet@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>    [3.3]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2012-05-04 08:27:43 -05:00 committed by John W. Linville
parent ed90542b0c
commit 574e02abaf
2 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/net/wireless/rtlwifi/pci.c
View File

@ -1851,14 +1851,6 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev,
/*like read eeprom and so on */
rtlpriv->cfg->ops->read_eeprom_info(hw);
if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
err = -ENODEV;
goto fail3;
}
rtlpriv->cfg->ops->init_sw_leds(hw);
/*aspm */
rtl_pci_init_aspm(hw);
@ -1877,6 +1869,14 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev,
goto fail3;
}
if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
err = -ENODEV;
goto fail3;
}
rtlpriv->cfg->ops->init_sw_leds(hw);
err = sysfs_create_group(&pdev->dev.kobj, &rtl_attribute_group);
if (err) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,

10
drivers/net/wireless/rtlwifi/usb.c
View File

@ -971,11 +971,6 @@ int __devinit rtl_usb_probe(struct usb_interface *intf,
rtlpriv->cfg->ops->read_chip_version(hw);
/*like read eeprom and so on */
rtlpriv->cfg->ops->read_eeprom_info(hw);
if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
goto error_out;
}
rtlpriv->cfg->ops->init_sw_leds(hw);
err = _rtl_usb_init(hw);
if (err)
goto error_out;
@ -987,6 +982,11 @@ int __devinit rtl_usb_probe(struct usb_interface *intf,
"Can't allocate sw for mac80211\n");
goto error_out;
}
if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
goto error_out;
}
rtlpriv->cfg->ops->init_sw_leds(hw);
return 0;
error_out: