kernel: update kernel 4.4 to version 4.4.69

[openwrt/staging/chunkeey.git] / target / linux / generic / patches-4.4 / 062-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch

diff --git a/target/linux/generic/patches-4.4/062-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch b/target/linux/generic/patches-4.4/062-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch
deleted file mode 100644 (file)
index fc559ee..0000000
--- a/target/linux/generic/patches-4.4/062-02-MIPS-Stack-unwinding-while-on-IRQ-stack.patch
+++ /dev/null
@@ -1,42 +0,0 @@
-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
-@@ -32,6 +32,7 @@
- #include <asm/cpu.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>
-@@ -552,7 +553,19 @@ 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