Commit 774f0c64 authored by Felix Fietkau's avatar Felix Fietkau Committed by James Hogan
Browse files

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.

Fixes: 95135bfa ("MIPS: Lantiq: Deactivate most of the devices by default")
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
Acked-by: default avatarJohn Crispin <john@phrozen.org>
Cc: hauke.mehrtens@lantiq.com
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.4.x-
Patchwork: https://patchwork.linux-mips.org/patch/15078/


Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
parent 884b4269

arch/mips/lantiq/xway/sysctrl.c

+4 −4
Original line number Diff line number Diff line
@@ -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);

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