From 6783b9cd7104470a3afab51c205c5aea53a2858f Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 9 Oct 2009 21:20:30 +0200 Subject: [PATCH] nvram: Drop the bkl from nvram_llseek() There is nothing to protect inside nvram_llseek(), the file offset doesn't need to be protected and nvram_len is only initialized from an __init path. It's safe to remove the big kernel lock there. Signed-off-by: Frederic Weisbecker LKML-Reference: <1255116030-6929-1-git-send-email-fweisbec@gmail.com> Cc: Greg KH Signed-off-by: Thomas Gleixner --- drivers/char/generic_nvram.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c index ef31738c2cbe..fda4181b5e67 100644 --- a/drivers/char/generic_nvram.c +++ b/drivers/char/generic_nvram.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include #ifdef CONFIG_PPC_PMAC @@ -32,7 +31,6 @@ static ssize_t nvram_len; static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) { - lock_kernel(); switch (origin) { case 1: offset += file->f_pos; @@ -41,12 +39,11 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) offset += nvram_len; break; } - if (offset < 0) { - unlock_kernel(); + if (offset < 0) return -EINVAL; - } + file->f_pos = offset; - unlock_kernel(); + return file->f_pos; }