From 215c1d05b8bb7b99cc8c40a877f649c5b1c15198 Mon Sep 17 00:00:00 2001 From: Stijn Segers Date: Wed, 24 May 2017 22:39:28 +0200 Subject: kernel: update kernel 4.4 to 4.4.69 Bump the 17.01 tree kernel to 4.4.69. Trunk 4.4 and 17.01 4.4 have diverged, talked this through with jow, he was okay with a clean diff against 17.01 and not a backported trunk patch. The following patches were applied upstream: * 062-[1-6]-MIPS-* series * 042-0004-mtd-bcm47xxpart-fix-parsing-first-block Reintroduced lantiq/patches-4.4/0050-MIPS-Lantiq-Fix-cascaded-IRQ-setup, as it was incorrectly included upstream thus dropped from LEDE, but subsequently reverted upstream. Thanks to Kevin Darbyshire-Bryant for pointing me to it. Compile-tested on: ar71xx, ramips/mt7621, x86/64. Run-tested on: ar71xx, ramips/mt7621, x86/64. Signed-off-by: Stijn Segers --- .../linux/lantiq/patches-4.4/0047-irq-fixes.patch | 4 +- .../0050-MIPS-Lantiq-Fix-cascaded-IRQ-setup.patch | 87 ++++++++++++++++++++++ 2 files changed, 89 insertions(+), 2 deletions(-) create mode 100644 target/linux/lantiq/patches-4.4/0050-MIPS-Lantiq-Fix-cascaded-IRQ-setup.patch (limited to 'target/linux/lantiq') diff --git a/target/linux/lantiq/patches-4.4/0047-irq-fixes.patch b/target/linux/lantiq/patches-4.4/0047-irq-fixes.patch index f664deb..9efa63d 100644 --- a/target/linux/lantiq/patches-4.4/0047-irq-fixes.patch +++ b/target/linux/lantiq/patches-4.4/0047-irq-fixes.patch @@ -45,7 +45,7 @@ /* disable */ ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_INEN) & ~BIT(i), LTQ_EIU_EXIN_INEN); -@@ -344,10 +344,10 @@ static int icu_map(struct irq_domain *d, +@@ -343,10 +343,10 @@ static int icu_map(struct irq_domain *d, return 0; for (i = 0; i < exin_avail; i++) @@ -58,7 +58,7 @@ return 0; } -@@ -437,14 +437,14 @@ int __init icu_of_init(struct device_nod +@@ -441,14 +441,14 @@ int __init icu_of_init(struct device_nod eiu_node = of_find_compatible_node(NULL, NULL, "lantiq,eiu-xway"); if (eiu_node && !of_address_to_resource(eiu_node, 0, &res)) { /* find out how many external irq sources we have */ diff --git a/target/linux/lantiq/patches-4.4/0050-MIPS-Lantiq-Fix-cascaded-IRQ-setup.patch b/target/linux/lantiq/patches-4.4/0050-MIPS-Lantiq-Fix-cascaded-IRQ-setup.patch new file mode 100644 index 0000000..c0d7afc --- /dev/null +++ b/target/linux/lantiq/patches-4.4/0050-MIPS-Lantiq-Fix-cascaded-IRQ-setup.patch @@ -0,0 +1,87 @@ +From: Felix Fietkau +Date: Thu, 19 Jan 2017 12:14:44 +0100 +Subject: [PATCH] MIPS: Lantiq: Fix cascaded IRQ setup + +With the IRQ stack changes integrated, the XRX200 devices started +emitting a constant stream of kernel messages like this: + +[ 565.415310] Spurious IRQ: CAUSE=0x1100c300 + +This appears to be caused by IP0 firing for some reason without being +handled. Fix this by setting up IP2-6 as a proper chained IRQ handler and +calling do_IRQ for all MIPS CPU interrupts. + +Cc: john@phrozen.org +Cc: stable@vger.kernel.org +Signed-off-by: Felix Fietkau +--- + +--- a/arch/mips/lantiq/irq.c ++++ b/arch/mips/lantiq/irq.c +@@ -271,6 +271,11 @@ static void ltq_hw5_irqdispatch(void) + DEFINE_HWx_IRQDISPATCH(5) + #endif + ++static void ltq_hw_irq_handler(struct irq_desc *desc) ++{ ++ ltq_hw_irqdispatch(irq_desc_get_irq(desc) - 2); ++} ++ + #ifdef CONFIG_MIPS_MT_SMP + void __init arch_init_ipiirq(int irq, struct irqaction *action) + { +@@ -315,23 +320,19 @@ static struct irqaction irq_call = { + asmlinkage void plat_irq_dispatch(void) + { + unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; +- unsigned int i; ++ int irq; + +- if ((MIPS_CPU_TIMER_IRQ == 7) && (pending & CAUSEF_IP7)) { +- do_IRQ(MIPS_CPU_TIMER_IRQ); +- goto out; +- } else { +- for (i = 0; i < MAX_IM; i++) { +- if (pending & (CAUSEF_IP2 << i)) { +- ltq_hw_irqdispatch(i); +- goto out; +- } +- } ++ if (!pending) { ++ spurious_interrupt(); ++ return; + } +- pr_alert("Spurious IRQ: CAUSE=0x%08x\n", read_c0_status()); + +-out: +- return; ++ pending >>= CAUSEB_IP; ++ while (pending) { ++ irq = fls(pending) - 1; ++ do_IRQ(MIPS_CPU_IRQ_BASE + irq); ++ pending &= ~BIT(irq); ++ } + } + + static int icu_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) +@@ -356,11 +357,6 @@ static const struct irq_domain_ops irq_d + .map = icu_map, + }; + +-static struct irqaction cascade = { +- .handler = no_action, +- .name = "cascade", +-}; +- + int __init icu_of_init(struct device_node *node, struct device_node *parent) + { + struct device_node *eiu_node; +@@ -392,7 +388,7 @@ int __init icu_of_init(struct device_nod + mips_cpu_irq_init(); + + for (i = 0; i < MAX_IM; i++) +- setup_irq(i + 2, &cascade); ++ irq_set_chained_handler(i + 2, ltq_hw_irq_handler); + + if (cpu_has_vint) { + pr_info("Setting up vectored interrupts\n"); -- cgit v1.1