From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 13 Apr 2016 08:31:14 +0000 (+0200)
Subject: iwlwifi: pcie: avoid msleep() with short timeout
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=192185d68dcc9b4517001fcec645111946f84d40;p=openwrt%2Fstaging%2Fblogic.git

iwlwifi: pcie: avoid msleep() with short timeout

Since msleep is based on jiffies, it can sleep for a long time.
Use usleep_range() instead to shorten the maximum time.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 59fd17a75a2c..f603d7830a6b 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -582,7 +582,7 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
 
 	iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
 		    CSR_RESET_LINK_PWR_MGMT_DISABLED);
-	msleep(1);
+	usleep_range(1000, 2000);
 
 	for (iter = 0; iter < 10; iter++) {
 		/* If HW is not ready, prepare the conditions to check again */
@@ -1945,7 +1945,7 @@ static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, u32 txq_bm)
 				      "WR pointer moved while flushing %d -> %d\n",
 				      wr_ptr, write_ptr))
 				return -ETIMEDOUT;
-			msleep(1);
+			usleep_range(1000, 2000);
 		}
 
 		if (q->read_ptr != q->write_ptr) {