Patch "net: mvneta: Fix CPU_MAP registers initialisation" has been added to the 4.1-stable tree

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

net: mvneta: Fix CPU_MAP registers initialisation

to the 4.1-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:
net-mvneta-fix-cpu_map-registers-initialisation.patch
and it can be found in the queue-4.1 subdirectory.

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

From: Maxime Ripard <[email protected]>
Date: Fri, 25 Sep 2015 18:09:35 +0200
Subject: net: mvneta: Fix CPU_MAP registers initialisation

From: Maxime Ripard <[email protected]>

commit 2502d0ef272da7058ef303b849a2c8dc324c2e2e upstream.

The CPU_MAP register is duplicated for each CPUs at different addresses, each instance being at a different address.

However, the code so far was using CONFIG_NR_CPUS to initialise the CPU_MAP registers for each registers, while the SoCs embed at most 4 CPUs.

This is especially an issue with multi_v7_defconfig, where CONFIG_NR_CPUS is currently set to 16, resulting in writes to registers that are not CPU_MAP.

---
 drivers/net/ethernet/marvell/mvneta.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -949,7 +949,7 @@ static void mvneta_defaults_set(struct m
 	/* Set CPU queue access map - all CPUs have access to all RX
 	 * queues and to all TX queues
 	 */
-	for (cpu = 0; cpu < CONFIG_NR_CPUS; cpu++)
+	for_each_present_cpu(cpu)
 		mvreg_write(pp, MVNETA_CPU_MAP(cpu),
 			    (MVNETA_CPU_RXQ_ACCESS_ALL_MASK |
 			     MVNETA_CPU_TXQ_ACCESS_ALL_MASK));

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

queue-4.1/net-mvneta-fix-cpu_map-registers-initialisation.patch