ath10k: suspend hardware before reset
In case of warm reset target need to be suspended.
Suspend function is extented to handle both cases
with disabling interrupts and without disabling interrupts.
Warm target reset requires suspend with all interrupts
disabled.
This patch depends on
ath10k: fix device initialization routine
Signed-off-by: Marek Puzyniak <marek.puzyniak@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 0d161cf..ebc5fc2 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -858,10 +858,34 @@
}
EXPORT_SYMBOL(ath10k_core_start);
+int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt)
+{
+ int ret;
+
+ reinit_completion(&ar->target_suspend);
+
+ ret = ath10k_wmi_pdev_suspend_target(ar, suspend_opt);
+ if (ret) {
+ ath10k_warn("could not suspend target (%d)\n", ret);
+ return ret;
+ }
+
+ ret = wait_for_completion_timeout(&ar->target_suspend, 1 * HZ);
+
+ if (ret == 0) {
+ ath10k_warn("suspend timed out - target pause event never came\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
void ath10k_core_stop(struct ath10k *ar)
{
lockdep_assert_held(&ar->conf_mutex);
+ /* try to suspend target */
+ ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR);
ath10k_debug_stop(ar);
ath10k_htc_stop(&ar->htc);
ath10k_htt_detach(&ar->htt);