[source] lantiq: fix an ethernet stability issue triggered by receving packets during boot
LEDE Commits
lede-commits at lists.infradead.org
Thu Jan 19 05:35:42 PST 2017
nbd pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/4039b3eba1cfdfd0025e91c5c5d45b76425ad5c8
commit 4039b3eba1cfdfd0025e91c5c5d45b76425ad5c8
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Thu Jan 19 14:25:09 2017 +0100
lantiq: fix an ethernet stability issue triggered by receving packets during boot
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.
Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
...-Lantiq-Keep-ethernet-enabled-during-boot.patch | 53 ++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/target/linux/lantiq/patches-4.4/0070-MIPS-Lantiq-Keep-ethernet-enabled-during-boot.patch b/target/linux/lantiq/patches-4.4/0070-MIPS-Lantiq-Keep-ethernet-enabled-during-boot.patch
new file mode 100644
index 0000000..67cf7d3
--- /dev/null
+++ b/target/linux/lantiq/patches-4.4/0070-MIPS-Lantiq-Keep-ethernet-enabled-during-boot.patch
@@ -0,0 +1,53 @@
+From: Felix Fietkau <nbd at nbd.name>
+Date: Thu, 19 Jan 2017 14:14:36 +0100
+Subject: [PATCH] MIPS: Lantiq: Keep ethernet enabled during boot
+
+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.
+
+Cc: john at phrozen.org
+Cc: hauke.mehrtens at lantiq.com
+Cc: stable at vger.kernel.org
+Fixes: 95135bfa7ead ("MIPS: Lantiq: Deactivate most of the devices by default")
+Signed-off-by: Felix Fietkau <nbd at nbd.name>
+---
+
+--- a/arch/mips/lantiq/xway/sysctrl.c
++++ b/arch/mips/lantiq/xway/sysctrl.c
+@@ -564,7 +564,7 @@ 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")) {
+@@ -572,7 +572,7 @@ 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);
+@@ -594,11 +594,11 @@ 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);
More information about the lede-commits
mailing list