From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Sun, 5 Aug 2012 13:55:06 +0000 (+0300)
Subject: iwlwifi: fix the preparation of the card
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=289e5501c3141191dd830957f1d764d3dc14a54f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

iwlwifi: fix the preparation of the card

There is no need to check if the ownership has been
relinquished but we should rather try to get it in a
loop.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index f981b7387292..f76efac230e2 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -897,6 +897,7 @@ static int iwl_set_hw_ready(struct iwl_trans *trans)
 static int iwl_prepare_card_hw(struct iwl_trans *trans)
 {
 	int ret;
+	int t = 0;
 
 	IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n");
 
@@ -909,17 +910,15 @@ static int iwl_prepare_card_hw(struct iwl_trans *trans)
 	iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
 		    CSR_HW_IF_CONFIG_REG_PREPARE);
 
-	ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG,
-			   ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
-			   CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
+	do {
+		ret = iwl_set_hw_ready(trans);
+		if (ret >= 0)
+			return 0;
 
-	if (ret < 0)
-		return ret;
+		usleep_range(200, 1000);
+		t += 200;
+	} while (t < 150000);
 
-	/* HW should be ready by now, check again. */
-	ret = iwl_set_hw_ready(trans);
-	if (ret >= 0)
-		return 0;
 	return ret;
 }