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ath9k_htc: Handle device unplug properly

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When the USB device has been unplugged, there is
no point in trying to send commands to the target.
Fix this by denying all WMI commands in such a case.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith
2010-04-23 10:28:10 +05:30
committed by John W. Linville
parent c11d8f89d3
commit a3be14b76d
3 changed files with 12 additions and 0 deletions
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8
drivers/net/wireless/ath/ath9k/htc_drv_init.c
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@ -744,6 +744,9 @@ int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
if (ret)
goto err_init;
/* The device may have been unplugged earlier. */
priv->op_flags &= ~OP_UNPLUGGED;
ret = ath9k_init_device(priv, devid);
if (ret)
goto err_init;
@ -760,6 +763,11 @@ err_free:
void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
{
if (htc_handle->drv_priv) {
/* Check if the device has been yanked out. */
if (hotunplug)
htc_handle->drv_priv->op_flags |= OP_UNPLUGGED;
ath9k_deinit_device(htc_handle->drv_priv);
ath9k_deinit_wmi(htc_handle->drv_priv);
ieee80211_free_hw(htc_handle->drv_priv->hw);