From: Matthew Wilcox <willy@parisc-linux.org>
Date: Tue, 17 Jan 2006 18:43:48 +0000 (-0700)
Subject: [PARISC] Remove {,un}lock_kernel from perf ioctl
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a2bb214dcd1db862fdb6421e21f1cff0c3535162;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PARISC] Remove {,un}lock_kernel from perf ioctl

Remove the lock_kernel/unlock_kernel pair in the ioctl method. It
plainly wasn't protecting anything.

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
---

diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index 11178ccbb89..53f861c82f9 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -444,7 +444,6 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	uint32_t raddr[4];
 	int error = 0;
 
-	lock_kernel();
 	switch (cmd) {
 
 	    case PA_PERF_ON:
@@ -477,8 +476,6 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
   	 		error = -ENOTTY;
 	}
 
-	unlock_kernel();
-
 	return error;
 }