diff options
| author | Sujith <Sujith.Manoharan@atheros.com> | 2010-04-23 10:28:10 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-04-26 14:21:16 -0400 |
| commit | a3be14b76da111ebe4d245b0542613f9317104e7 (patch) | |
| tree | fe3fcbd6ab1a6a4d4b4b9b89f071224ac351fe6e | |
| parent | c11d8f89d3b785f3ef987c2d9ee1bfea6f8b3d0f (diff) | |
ath9k_htc: Handle device unplug properly
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>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc_drv_init.c | 8 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/wmi.c | 3 |
3 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h index c765ff4a505..b771e20075a 100644 --- a/drivers/net/wireless/ath/ath9k/htc.h +++ b/drivers/net/wireless/ath/ath9k/htc.h @@ -329,6 +329,7 @@ struct htc_beacon_config { #define OP_ASSOCIATED BIT(8) #define OP_ENABLE_BEACON BIT(9) #define OP_LED_DEINIT BIT(10) +#define OP_UNPLUGGED BIT(11) struct ath9k_htc_priv { struct device *dev; diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c index a86189629d9..701f2ef5a44 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c @@ -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); diff --git a/drivers/net/wireless/ath/ath9k/wmi.c b/drivers/net/wireless/ath/ath9k/wmi.c index dc6c6fc2e09..c6885453265 100644 --- a/drivers/net/wireless/ath/ath9k/wmi.c +++ b/drivers/net/wireless/ath/ath9k/wmi.c @@ -276,6 +276,9 @@ int ath9k_wmi_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id, int time_left, ret = 0; unsigned long flags; + if (wmi->drv_priv->op_flags & OP_UNPLUGGED) + return 0; + if (!wmi) return -EINVAL; |