linux-kernel - [PATCH 28/28] genirq: remove the is_affinity_mask

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Date:   Tue, 13 Aug 2019 09:25:14 +0200
From:   Christoph Hellwig <hch@....de>
To:     Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>,
        Mike Travis <mike.travis@....com>,
        Dimitri Sivanich <sivanich@....com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-ia64@...r.kernel.org, linux-ide@...r.kernel.org,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 28/28] genirq: remove the is_affinity_mask_valid hook

This override was only used by the ia64 SGI SN2 platform, which is
gone now.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 kernel/irq/proc.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index da9addb8d655..cfc4f088a0e7 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -100,10 +100,6 @@ static int irq_affinity_hint_proc_show(struct seq_file *m, void *v)
 	return 0;
 }
 
-#ifndef is_affinity_mask_valid
-#define is_affinity_mask_valid(val) 1
-#endif
-
 int no_irq_affinity;
 static int irq_affinity_proc_show(struct seq_file *m, void *v)
 {
@@ -136,11 +132,6 @@ static ssize_t write_irq_affinity(int type, struct file *file,
 	if (err)
 		goto free_cpumask;
 
-	if (!is_affinity_mask_valid(new_value)) {
-		err = -EINVAL;
-		goto free_cpumask;
-	}
-
 	/*
 	 * Do not allow disabling IRQs completely - it's a too easy
 	 * way to make the system unusable accidentally :-) At least
@@ -232,11 +223,6 @@ static ssize_t default_affinity_write(struct file *file,
 	if (err)
 		goto out;
 
-	if (!is_affinity_mask_valid(new_value)) {
-		err = -EINVAL;
-		goto out;
-	}
-
 	/*
 	 * Do not allow disabling IRQs completely - it's a too easy
 	 * way to make the system unusable accidentally :-) At least
-- 
2.20.1