xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86/irq: Move IS_ERR_OR_NULL() check into common do_IRQ() code

Browse Source 
Both the 64bit and the 32bit handle_irq() implementation check the irq
descriptor pointer with IS_ERR_OR_NULL() and return failure. That can be
done simpler in the common do_IRQ() code.

This reduces the 64bit handle_irq() function to a wrapper around
generic_handle_irq_desc(). Invoke it directly from do_IRQ() to spare the
extra function call.

[ tglx: Got rid of the #ifdef and massaged changelog ]

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/2ec758c7-9aaa-73ab-f083-cc44c86aa741@gmail.com
This commit is contained in:
Heiner Kallweit
2019-08-19 21:36:09 +02:00
committed by Thomas Gleixner
parent e30c44e2e5
commit d6f83427ff
4 changed files with 8 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
arch/x86/kernel/irq_64.c
View File

@@ -26,15 +26,6 @@
DEFINE_PER_CPU_PAGE_ALIGNED(struct irq_stack, irq_stack_backing_store) __visible;
DECLARE_INIT_PER_CPU(irq_stack_backing_store);
bool handle_irq(struct irq_desc *desc, struct pt_regs *regs)
{
if (IS_ERR_OR_NULL(desc))
return false;
generic_handle_irq_desc(desc);
return true;
}
#ifdef CONFIG_VMAP_STACK
/*
* VMAP the backing store with guard pages