/**
* iwl_scan_cancel_timeout - Cancel any currently executing HW scan
* @ms: amount of time to wait (in milliseconds) for scan to abort
*
*/
void iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
{
unsigned long timeout = jiffies + msecs_to_jiffies(ms);
lockdep_assert_held(&priv->mutex);
IWL_DEBUG_SCAN(priv, "Scan cancel timeout\n");
iwl_do_scan_abort(priv);
while (time_before_eq(jiffies, timeout)) {
if (!test_bit(STATUS_SCAN_HW, &priv->status))
goto finished;
msleep(20);
}
return;
finished:
/*
* Now STATUS_SCAN_HW is clear. This means that the
* device finished, but the background work is going
* to execute at best as soon as we release the mutex.
* Since we need to be able to issue a new scan right
* after this function returns, run the complete here.
* The STATUS_SCAN_COMPLETE bit will then be cleared
* and prevent the background work from "completing"
* a possible new scan.
*/
iwl_process_scan_complete(priv);
}
/**
* iwl_scan_cancel_timeout - Cancel any currently executing HW scan
* @ms: amount of time to wait (in milliseconds) for scan to abort
*
*/
int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
{
unsigned long timeout = jiffies + msecs_to_jiffies(ms);
lockdep_assert_held(&priv->mutex);
IWL_DEBUG_SCAN(priv, "Scan cancel timeout\n");
iwl_do_scan_abort(priv);
while (time_before_eq(jiffies, timeout)) {
if (!test_bit(STATUS_SCAN_HW, &priv->status))
break;
msleep(20);
}
return test_bit(STATUS_SCAN_HW, &priv->status);
}
