Merge commit 'v2.6.26' into bkl-removal

[net-next-2.6.git] / drivers / char / rtc.c

diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 5c3142b6f1fcdf102a92b79dec3b9d000b4d4a3b..fa92a8af5a5a05fe62a98aadd327177006f52c16 100644 (file)
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -73,6 +73,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/spinlock.h>
+#include <linux/smp_lock.h>
 #include <linux/sysctl.h>
 #include <linux/wait.h>
 #include <linux/bcd.h>
@@ -88,6 +89,7 @@
 
 #ifdef CONFIG_SPARC32
 #include <linux/pci.h>
+#include <linux/jiffies.h>
 #include <asm/ebus.h>
 
 static unsigned long rtc_port;
@@ -677,12 +679,13 @@ static int rtc_do_ioctl(unsigned int cmd, unsigned long arg, int kernel)
                if (arg != (1<<tmp))
                        return -EINVAL;
 
+               rtc_freq = arg;
+
                spin_lock_irqsave(&rtc_lock, flags);
                if (hpet_set_periodic_freq(arg)) {
                        spin_unlock_irqrestore(&rtc_lock, flags);
                        return 0;
                }
-               rtc_freq = arg;
 
                val = CMOS_READ(RTC_FREQ_SELECT) & 0xf0;
                val |= (16 - tmp);
@@ -732,6 +735,7 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
  * needed here. Or anywhere else in this driver. */
 static int rtc_open(struct inode *inode, struct file *file)
 {
+       lock_kernel();
        spin_lock_irq(&rtc_lock);
 
        if (rtc_status & RTC_IS_OPEN)
@@ -741,10 +745,12 @@ static int rtc_open(struct inode *inode, struct file *file)
 
        rtc_irq_data = 0;
        spin_unlock_irq(&rtc_lock);
+       unlock_kernel();
        return 0;
 
 out_busy:
        spin_unlock_irq(&rtc_lock);
+       unlock_kernel();
        return -EBUSY;
 }
 
@@ -1068,10 +1074,8 @@ no_irq:
        }
 
 #ifdef CONFIG_PROC_FS
-       ent = create_proc_entry("driver/rtc", 0, NULL);
-       if (ent)
-               ent->proc_fops = &rtc_proc_fops;
-       else
+       ent = proc_create("driver/rtc", 0, NULL, &rtc_proc_fops);
+       if (!ent)
                printk(KERN_WARNING "rtc: Failed to register with procfs.\n");
 #endif
 
@@ -1316,7 +1320,8 @@ void rtc_get_rtc_time(struct rtc_time *rtc_tm)
         * Once the read clears, read the RTC time (again via ioctl). Easy.
         */
 
-       while (rtc_is_updating() != 0 && jiffies - uip_watchdog < 2*HZ/100)
+       while (rtc_is_updating() != 0 &&
+              time_before(jiffies, uip_watchdog + 2*HZ/100))
                cpu_relax();
 
        /*