Patch "i40e: Acquire NVM lock before reads on all devices" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

i40e: Acquire NVM lock before reads on all devices

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
i40e-acquire-nvm-lock-before-reads-on-all-devices.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Aaron Salter <[email protected]>
Date: Fri, 2 Dec 2016 12:33:02 -0800
Subject: i40e: Acquire NVM lock before reads on all devices

From: Aaron Salter <[email protected]>

[ Upstream commit 96a39aed25e6559b160786117df124084feb9080 ]

Acquire NVM lock before reads on all devices. Previously, locks were only used for X722 and later. Fixes an issue where simultaneous X710 NVM accesses were interfering with each other.

---
 drivers/net/ethernet/intel/i40e/i40e_nvm.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

@@ -292,14 +292,14 @@ i40e_status i40e_read_nvm_word(struct i4
 {
 	enum i40e_status_code ret_code = 0;
 
-	if (hw->flags & I40E_HW_FLAG_AQ_SRCTL_ACCESS_ENABLE) {
-		ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
-		if (!ret_code) {
+	ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+	if (!ret_code) {
+		if (hw->flags & I40E_HW_FLAG_AQ_SRCTL_ACCESS_ENABLE) {
 			ret_code = i40e_read_nvm_word_aq(hw, offset, data);
-			i40e_release_nvm(hw);
+		} else {
+			ret_code = i40e_read_nvm_word_srctl(hw, offset, data);
 		}
-	} else {
-		ret_code = i40e_read_nvm_word_srctl(hw, offset, data);
+		i40e_release_nvm(hw);
 	}
 	return ret_code;
 }

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/i40e-acquire-nvm-lock-before-reads-on-all-devices.patch