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Patch "MIPS: Lantiq: Keep ethernet enabled during boot" has been added to the 4.4-stable tree

PATCH [email protected] 1 participant 1 message Mar 8, 2017

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

MIPS: Lantiq: Keep ethernet enabled during boot

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:
mips-lantiq-keep-ethernet-enabled-during-boot.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.

Quoted 1 line

From 774f0c6419bb8f9d83901d33582c7fe3ba6a6cb3 Mon Sep 17 00:00:00 2001

From: Felix Fietkau <[email protected]>
Date: Thu, 19 Jan 2017 14:20:09 +0100
Subject: MIPS: Lantiq: Keep ethernet enabled during boot

From: Felix Fietkau <[email protected]>

commit 774f0c6419bb8f9d83901d33582c7fe3ba6a6cb3 upstream.

Disabling ethernet during reboot (only to enable it again when the ethernet driver attaches) can put the chip into a faulty state where it corrupts the header of all incoming packets.

This happens if packets arrive during the time window where the core is disabled, and it can be easily reproduced by rebooting while sending a flood ping to the broadcast address.

Fixes 95135bfa7ead ("MIPS: Lantiq: Deactivate most of the devices by default")
Signed-off-by Felix Fietkau <[email protected]>
Acked-by John Crispin <[email protected]>
Cc [email protected]
Cc [email protected]

Patchwork: https://patchwork.linux-mips.org/patch/15078/

Signed-off-by James Hogan <[email protected]>
Signed-off-by Greg Kroah-Hartman <[email protected]>
---
 arch/mips/lantiq/xway/sysctrl.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
arch/mips/lantiq/xway/sysctrl.c +4 -4
@@ -545,7 +545,7 @@ void __init ltq_soc_init(void)
 		clkdev_add_pmu("1a800000.pcie", "msi", 1, 1, PMU1_PCIE2_MSI);
 		clkdev_add_pmu("1a800000.pcie", "pdi", 1, 1, PMU1_PCIE2_PDI);
 		clkdev_add_pmu("1a800000.pcie", "ctl", 1, 1, PMU1_PCIE2_CTL);
-		clkdev_add_pmu("1e108000.eth", NULL, 1, 0, PMU_SWITCH | PMU_PPE_DP);
+		clkdev_add_pmu("1e108000.eth", NULL, 0, 0, PMU_SWITCH | PMU_PPE_DP);
 		clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
 		clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU);
 	} else if (of_machine_is_compatible("lantiq,ar10")) {

@@ -553,7 +553,7 @@ void __init ltq_soc_init(void)
 				  ltq_ar10_fpi_hz(), ltq_ar10_pp32_hz());
 		clkdev_add_pmu("1e101000.usb", "ctl", 1, 0, PMU_USB0);
 		clkdev_add_pmu("1e106000.usb", "ctl", 1, 0, PMU_USB1);
-		clkdev_add_pmu("1e108000.eth", NULL, 1, 0, PMU_SWITCH |
+		clkdev_add_pmu("1e108000.eth", NULL, 0, 0, PMU_SWITCH |
 			       PMU_PPE_DP | PMU_PPE_TC);
 		clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
 		clkdev_add_pmu("1f203000.rcu", "gphy", 1, 0, PMU_GPHY);

@@ -575,11 +575,11 @@ void __init ltq_soc_init(void)
 		clkdev_add_pmu(NULL, "ahb", 1, 0, PMU_AHBM | PMU_AHBS);
 
 		clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
-		clkdev_add_pmu("1e108000.eth", NULL, 1, 0,
+		clkdev_add_pmu("1e108000.eth", NULL, 0, 0,
 				PMU_SWITCH | PMU_PPE_DPLUS | PMU_PPE_DPLUM |
 				PMU_PPE_EMA | PMU_PPE_TC | PMU_PPE_SLL01 |
 				PMU_PPE_QSB | PMU_PPE_TOP);
-		clkdev_add_pmu("1f203000.rcu", "gphy", 1, 0, PMU_GPHY);
+		clkdev_add_pmu("1f203000.rcu", "gphy", 0, 0, PMU_GPHY);
 		clkdev_add_pmu("1e103000.sdio", NULL, 1, 0, PMU_SDIO);
 		clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU);
 		clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE);

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

queue-4.4/mips-lantiq-keep-ethernet-enabled-during-boot.patch