f5919b65d4
Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From 6b8b69ff7c4c25f01535cbe49a80516df6dbcfe8 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Mon, 8 May 2017 16:43:40 +0100
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Subject: [PATCH 010/454] irq_bcm2836: Send event when onlining sleeping cores
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In order to reduce power consumption and bus traffic, it is sensible
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for secondary cores to enter a low-power idle state when waiting to
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be started. The wfe instruction causes a core to wait until an event
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or interrupt arrives before continuing to the next instruction.
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The sev instruction sends a wakeup event to the other cores, so call
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it from bcm2836_smp_boot_secondary, the function that wakes up the
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waiting cores during booting.
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It is harmless to use this patch without the corresponding change
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adding wfe to the ARMv7/ARMv8-32 stubs, but if the stubs are updated
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and this patch is not applied then the other cores will sleep forever.
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See: https://github.com/raspberrypi/linux/issues/1989
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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drivers/irqchip/irq-bcm2836.c | 3 +++
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1 file changed, 3 insertions(+)
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--- a/drivers/irqchip/irq-bcm2836.c
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+++ b/drivers/irqchip/irq-bcm2836.c
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@@ -227,6 +227,9 @@ static int __init bcm2836_smp_boot_secon
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writel(secondary_startup_phys,
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intc.base + LOCAL_MAILBOX3_SET0 + 16 * cpu);
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+ dsb(sy); /* Ensure write has completed before waking the other CPUs */
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+ sev();
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+
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return 0;
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}
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