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authorHeiner Kallweit <hkallweit1@gmail.com>2019-08-19 22:36:09 +0300
committerThomas Gleixner <tglx@linutronix.de>2019-08-20 00:19:06 +0300
commitd6f83427ff422b3a65e4a6bd84c010f78d4a30a5 (patch)
tree7fbc5551c470302423c7ca6dfe7bc17a7233d988 /arch/x86/kernel/irq_32.c
parente30c44e2e59c98023997632815cbc5e273991c25 (diff)
downloadlinux-d6f83427ff422b3a65e4a6bd84c010f78d4a30a5.tar.xz
x86/irq: Move IS_ERR_OR_NULL() check into common do_IRQ() code
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
Diffstat (limited to 'arch/x86/kernel/irq_32.c')
-rw-r--r--arch/x86/kernel/irq_32.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index fc34816c6f04..a759ca97cd01 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -148,18 +148,13 @@ void do_softirq_own_stack(void)
call_on_stack(__do_softirq, isp);
}
-bool handle_irq(struct irq_desc *desc, struct pt_regs *regs)
+void handle_irq(struct irq_desc *desc, struct pt_regs *regs)
{
int overflow = check_stack_overflow();
- if (IS_ERR_OR_NULL(desc))
- return false;
-
if (user_mode(regs) || !execute_on_irq_stack(overflow, desc)) {
if (unlikely(overflow))
print_stack_overflow();
generic_handle_irq_desc(desc);
}
-
- return true;
}