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efirtc: push down the BKL

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Push it down as far as the EFI method calls.  Someone who knows EFI can do
the other bits.  Also fix another wrong unknown ioctl return.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-07-25 01:48:12 -07:00 committed by Linus Torvalds
parent 372572e9b1
commit 76528a42e2
1 changed files with 19 additions and 16 deletions
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35
drivers/char/efirtc.c
View File

@ -37,8 +37,9 @@
#include <linux/rtc.h>
#include <linux/proc_fs.h>
#include <linux/efi.h>
#include <linux/smp_lock.h>
#include <linux/uaccess.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#define EFI_RTC_VERSION "0.4"
@ -51,8 +52,8 @@
static DEFINE_SPINLOCK(efi_rtc_lock);
static int efi_rtc_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg);
static long efi_rtc_ioctl(struct file *file, unsigned int cmd,
unsigned long arg);
#define is_leap(year) \
((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
@ -146,9 +147,8 @@ convert_from_efi_time(efi_time_t *eft, struct rtc_time *wtime)
}
}
static int
efi_rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
static long efi_rtc_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
efi_status_t status;
@ -175,13 +175,13 @@ efi_rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
return -EINVAL;
case RTC_RD_TIME:
lock_kernel();
spin_lock_irqsave(&efi_rtc_lock, flags);
status = efi.get_time(&eft, &cap);
spin_unlock_irqrestore(&efi_rtc_lock,flags);
unlock_kernel();
if (status != EFI_SUCCESS) {
/* should never happen */
printk(KERN_ERR "efitime: can't read time\n");
@ -203,11 +203,13 @@ efi_rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
convert_to_efi_time(&wtime, &eft);
lock_kernel();
spin_lock_irqsave(&efi_rtc_lock, flags);
status = efi.set_time(&eft);
spin_unlock_irqrestore(&efi_rtc_lock,flags);
unlock_kernel();
return status == EFI_SUCCESS ? 0 : -EINVAL;
@ -223,6 +225,7 @@ efi_rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
convert_to_efi_time(&wtime, &eft);
lock_kernel();
spin_lock_irqsave(&efi_rtc_lock, flags);
/*
* XXX Fixme:
@ -233,16 +236,19 @@ efi_rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
status = efi.set_wakeup_time((efi_bool_t)enabled, &eft);
spin_unlock_irqrestore(&efi_rtc_lock,flags);
unlock_kernel();
return status == EFI_SUCCESS ? 0 : -EINVAL;
case RTC_WKALM_RD:
lock_kernel();
spin_lock_irqsave(&efi_rtc_lock, flags);
status = efi.get_wakeup_time((efi_bool_t *)&enabled, (efi_bool_t *)&pending, &eft);
spin_unlock_irqrestore(&efi_rtc_lock,flags);
unlock_kernel();
if (status != EFI_SUCCESS) return -EINVAL;
@ -256,7 +262,7 @@ efi_rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
return copy_to_user(&ewp->time, &wtime,
sizeof(struct rtc_time)) ? -EFAULT : 0;
}
return -EINVAL;
return -ENOTTY;
}
/*
@ -265,8 +271,7 @@ efi_rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
* up things on a close.
*/
static int
efi_rtc_open(struct inode *inode, struct file *file)
static int efi_rtc_open(struct inode *inode, struct file *file)
{
/*
* nothing special to do here
@ -277,8 +282,7 @@ efi_rtc_open(struct inode *inode, struct file *file)
return 0;
}
static int
efi_rtc_close(struct inode *inode, struct file *file)
static int efi_rtc_close(struct inode *inode, struct file *file)
{
return 0;
}
@ -289,13 +293,12 @@ efi_rtc_close(struct inode *inode, struct file *file)
static const struct file_operations efi_rtc_fops = {
.owner = THIS_MODULE,
.ioctl = efi_rtc_ioctl,
.unlocked_ioctl = efi_rtc_ioctl,
.open = efi_rtc_open,
.release = efi_rtc_close,
};
static struct miscdevice efi_rtc_dev=
{
static struct miscdevice efi_rtc_dev= {
EFI_RTC_MINOR,
"efirtc",
&efi_rtc_fops