From 0b048c7a1d7f65e3e3f77834c03237be9d6d94b7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 15 Oct 2009 10:28:38 +0000 Subject: [PATCH] macintosh: Remove BKL from nvram driver Drop the bkl from nvram_llseek() as it obviously protects nothing. The file offset is safe in essence. The ioctl can be converted to unlocked_ioctl because it just calls pmac_get_partition() which reads a value from an array which was initialized at early boot time. No need for serialization. Signed-off-by: Thomas Gleixner Cc: Benjamin Herrenschmidt Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt --- drivers/macintosh/nvram.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/macintosh/nvram.c b/drivers/macintosh/nvram.c index b195d753d2ed..c876349c32de 100644 --- a/drivers/macintosh/nvram.c +++ b/drivers/macintosh/nvram.c @@ -13,7 +13,6 @@ #include #include #include -#include #include #include @@ -21,7 +20,6 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) { - lock_kernel(); switch (origin) { case 1: offset += file->f_pos; @@ -30,12 +28,10 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) offset += NVRAM_SIZE; break; } - if (offset < 0) { - unlock_kernel(); + if (offset < 0) return -EINVAL; - } + file->f_pos = offset; - unlock_kernel(); return file->f_pos; } @@ -76,8 +72,7 @@ static ssize_t write_nvram(struct file *file, const char __user *buf, return p - buf; } -static int nvram_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static long nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { switch(cmd) { case PMAC_NVRAM_GET_OFFSET: -- 2.20.1