#include <linux/types.h>
#include <linux/errno.h>
#include <linux/miscdevice.h>
-#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/ioport.h>
#include <linux/capability.h>
#include <linux/fcntl.h>
#include <linux/poll.h>
#include <linux/module.h>
#include <linux/mc146818rtc.h> /* For struct rtc_time and ioctls, etc */
-#include <linux/smp_lock.h>
+#include <linux/bcd.h>
#include <asm/bvme6000hw.h>
#include <asm/io.h>
* ioctls.
*/
-#define BCD2BIN(val) (((val)&15) + ((val)>>4)*10)
-#define BIN2BCD(val) ((((val)/10)<<4) + (val)%10)
-
static unsigned char days_in_mo[] =
{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
unsigned char msr;
unsigned long flags;
struct rtc_time wtime;
+ void __user *argp = (void __user *)arg;
switch (cmd) {
case RTC_RD_TIME: /* Read the time/date from RTC */
rtc->msr = 0x40;
memset(&wtime, 0, sizeof(struct rtc_time));
do {
- wtime.tm_sec = BCD2BIN(rtc->bcd_sec);
- wtime.tm_min = BCD2BIN(rtc->bcd_min);
- wtime.tm_hour = BCD2BIN(rtc->bcd_hr);
- wtime.tm_mday = BCD2BIN(rtc->bcd_dom);
- wtime.tm_mon = BCD2BIN(rtc->bcd_mth)-1;
- wtime.tm_year = BCD2BIN(rtc->bcd_year);
+ wtime.tm_sec = bcd2bin(rtc->bcd_sec);
+ wtime.tm_min = bcd2bin(rtc->bcd_min);
+ wtime.tm_hour = bcd2bin(rtc->bcd_hr);
+ wtime.tm_mday = bcd2bin(rtc->bcd_dom);
+ wtime.tm_mon = bcd2bin(rtc->bcd_mth)-1;
+ wtime.tm_year = bcd2bin(rtc->bcd_year);
if (wtime.tm_year < 70)
wtime.tm_year += 100;
- wtime.tm_wday = BCD2BIN(rtc->bcd_dow)-1;
- } while (wtime.tm_sec != BCD2BIN(rtc->bcd_sec));
+ wtime.tm_wday = bcd2bin(rtc->bcd_dow)-1;
+ } while (wtime.tm_sec != bcd2bin(rtc->bcd_sec));
rtc->msr = msr;
local_irq_restore(flags);
- return copy_to_user((void *)arg, &wtime, sizeof wtime) ?
+ return copy_to_user(argp, &wtime, sizeof wtime) ?
-EFAULT : 0;
}
case RTC_SET_TIME: /* Set the RTC */
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- if (copy_from_user(&rtc_tm, (struct rtc_time*)arg,
- sizeof(struct rtc_time)))
+ if (copy_from_user(&rtc_tm, argp, sizeof(struct rtc_time)))
return -EFAULT;
yrs = rtc_tm.tm_year;
rtc->t0cr_rtmr = yrs%4;
rtc->bcd_tenms = 0;
- rtc->bcd_sec = BIN2BCD(sec);
- rtc->bcd_min = BIN2BCD(min);
- rtc->bcd_hr = BIN2BCD(hrs);
- rtc->bcd_dom = BIN2BCD(day);
- rtc->bcd_mth = BIN2BCD(mon);
- rtc->bcd_year = BIN2BCD(yrs%100);
+ rtc->bcd_sec = bin2bcd(sec);
+ rtc->bcd_min = bin2bcd(min);
+ rtc->bcd_hr = bin2bcd(hrs);
+ rtc->bcd_dom = bin2bcd(day);
+ rtc->bcd_mth = bin2bcd(mon);
+ rtc->bcd_year = bin2bcd(yrs%100);
if (rtc_tm.tm_wday >= 0)
- rtc->bcd_dow = BIN2BCD(rtc_tm.tm_wday+1);
+ rtc->bcd_dow = bin2bcd(rtc_tm.tm_wday+1);
rtc->t0cr_rtmr = yrs%4 | 0x08;
rtc->msr = msr;
static int rtc_open(struct inode *inode, struct file *file)
{
- if(rtc_status)
+ lock_kernel();
+ if(rtc_status) {
+ unlock_kernel();
return -EBUSY;
+ }
rtc_status = 1;
+ unlock_kernel();
return 0;
}
* The various file operations we support.
*/
-static struct file_operations rtc_fops = {
+static const struct file_operations rtc_fops = {
.ioctl = rtc_ioctl,
.open = rtc_open,
.release = rtc_release,