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authorPawel Dembicki <paweldembicki@gmail.com>2020-02-10 05:13:26 +0100
committerPetr Štetiar <ynezz@true.cz>2020-03-03 23:38:23 +0100
commit61b40187633dad298c3d073894037de02e2d7204 (patch)
tree3680e3818b6fbbb18885ab1bc91659e946be4ed3 /package
parent45e47a9cd7b8ad5572eedb7ed5befec553a3f04d (diff)
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kirkwood: fix switch dts node in EA4500 and EA3500
Changes made in switch nodes in d42c9ce commit causes problem with correct mvsw61xx detection. This commit undo that changes. mvsw61xx is platform driver, so it need to be in main root of dts. Fixes: d42c9ce326aa ("kirkwood: add kernel 4.19 support") Tested-by: Marcin Fedan <mfedan@gmail.com> [EA4500] Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Diffstat (limited to 'package')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-20 02:34:44 +0000
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From: Matt Redfearn <matt.redfearn@imgtec.com>
Date: Mon, 19 Dec 2016 14:20:57 +0000
Subject: [PATCH] MIPS: Stack unwinding while on IRQ stack

Within unwind stack, check if the stack pointer being unwound is within
the CPU's irq_stack and if so use that page rather than the task's stack
page.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
---

--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -33,6 +33,7 @@
 #include <asm/dsemul.h>
 #include <asm/dsp.h>
 #include <asm/fpu.h>
+#include <asm/irq.h>
 #include <asm/msa.h>
 #include <asm/pgtable.h>
 #include <asm/mipsregs.h>
@@ -511,7 +512,19 @@ EXPORT_SYMBOL(unwind_stack_by_address);
 unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
 			   unsigned long pc, unsigned long *ra)
 {
-	unsigned long stack_page = (unsigned long)task_stack_page(task);
+	unsigned long stack_page = 0;
+	int cpu;
+
+	for_each_possible_cpu(cpu) {
+		if (on_irq_stack(cpu, *sp)) {
+			stack_page = (unsigned long)irq_stack[cpu];
+			break;
+		}
+	}
+
+	if (!stack_page)
+		stack_page = (unsigned long)task_stack_page(task);
+
 	return unwind_stack_by_address(stack_page, sp, pc, ra);
 }
 #endif