From: Jeff Xie <jeff.xie@linux.dev>
Date: Mon, 26 Aug 2024 14:58:05 +0000 (+0800)
Subject: genirq/proc: Change the return value for set affinity permission error
X-Git-Tag: v6.12-rc1~195^2~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb29369fa543e7d5557c19ebecf072244bb14815;p=thirdparty%2Fkernel%2Flinux.git

genirq/proc: Change the return value for set affinity permission error

Currently, when the affinity of an irq cannot be set due to lack of
permission, the write_irq_affinity() returns the error code -EIO.

Change the return value to -EPERM as that reflects the cause of error
correctly.

Signed-off-by: Jeff Xie <jeff.xie@linux.dev>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240826145805.5938-1-jeff.xie@linux.dev
---

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index d98fb9c2c6679..9081ada81c3d0 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -140,7 +140,7 @@ static ssize_t write_irq_affinity(int type, struct file *file,
 	int err;
 
 	if (!irq_can_set_affinity_usr(irq) || no_irq_affinity)
-		return -EIO;
+		return -EPERM;
 
 	if (!zalloc_cpumask_var(&new_value, GFP_KERNEL))
 		return -ENOMEM;