linux-kernel - [PATCH 14/20] via-pmu: don't bother with access

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Message-Id: <20200509234557.1124086-14-viro@ZenIV.linux.org.uk>
Date:   Sun, 10 May 2020 00:45:51 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     linux-kernel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org
Subject: [PATCH 14/20] via-pmu: don't bother with access_ok()

From: Al Viro <viro@...iv.linux.org.uk>

we are using copy_to_user() for actual copying

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 drivers/macintosh/via-pmu.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 83eb05bf85ff..8450d7c008d0 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -2184,8 +2184,6 @@ pmu_read(struct file *file, char __user *buf,
 
 	if (count < 1 || !pp)
 		return -EINVAL;
-	if (!access_ok(buf, count))
-		return -EFAULT;
 
 	spin_lock_irqsave(&pp->lock, flags);
 	add_wait_queue(&pp->wait, &wait);
-- 
2.11.0