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authorJan Beulich <jbeulich@novell.com>2006-12-13 00:35:05 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-13 09:05:52 -0800
commit9cef779ec3643e6c846f86a32d8c44daff16a336 (patch)
tree0f797b0e90876fe65f6cb6f7e7b8ec0d9dbf3efb /drivers/char/rtc.c
parentf3e92d355e1251fb6d1a15508f2a5448d2354727 (diff)
downloadlinux-9cef779ec3643e6c846f86a32d8c44daff16a336.tar.bz2
[PATCH] RTC driver init adjustment
- conditionalizes procfs code upon CONFIG_PROC_FS (to reduce code size when that option is not enabled) - make initialization no longer fail when the procfs entry can't be allocated (namely would initialization always have failed when CONFIG_PROC_FS was not set) - move the formerly file-scope static variable rtc_int_handler_ptr into the only function using it, and makes it automatic. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/rtc.c')
-rw-r--r--drivers/char/rtc.c32
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 2eb53bea1866..e1d70e8b6268 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -113,7 +113,7 @@ static int rtc_has_irq = 1;
#define hpet_set_rtc_irq_bit(arg) 0
#define hpet_rtc_timer_init() do { } while (0)
#define hpet_rtc_dropped_irq() 0
-static inline irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id) {return 0;}
+static irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id) {return 0;}
#else
extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id);
#endif
@@ -165,7 +165,9 @@ static void mask_rtc_irq_bit(unsigned char bit)
}
#endif
+#ifdef CONFIG_PROC_FS
static int rtc_proc_open(struct inode *inode, struct file *file);
+#endif
/*
* Bits in rtc_status. (6 bits of room for future expansion)
@@ -906,6 +908,7 @@ static struct miscdevice rtc_dev = {
.fops = &rtc_fops,
};
+#ifdef CONFIG_PROC_FS
static const struct file_operations rtc_proc_fops = {
.owner = THIS_MODULE,
.open = rtc_proc_open,
@@ -913,14 +916,13 @@ static const struct file_operations rtc_proc_fops = {
.llseek = seq_lseek,
.release = single_release,
};
-
-#if defined(RTC_IRQ) && !defined(__sparc__)
-static irq_handler_t rtc_int_handler_ptr;
#endif
static int __init rtc_init(void)
{
+#ifdef CONFIG_PROC_FS
struct proc_dir_entry *ent;
+#endif
#if defined(__alpha__) || defined(__mips__)
unsigned int year, ctrl;
char *guess = NULL;
@@ -932,9 +934,11 @@ static int __init rtc_init(void)
struct sparc_isa_bridge *isa_br;
struct sparc_isa_device *isa_dev;
#endif
-#endif
-#ifndef __sparc__
+#else
void *r;
+#ifdef RTC_IRQ
+ irq_handler_t rtc_int_handler_ptr;
+#endif
#endif
#ifdef __sparc__
@@ -1024,17 +1028,13 @@ no_irq:
return -ENODEV;
}
+#ifdef CONFIG_PROC_FS
ent = create_proc_entry("driver/rtc", 0, NULL);
- if (!ent) {
-#ifdef RTC_IRQ
- free_irq(RTC_IRQ, NULL);
- rtc_has_irq = 0;
+ if (ent)
+ ent->proc_fops = &rtc_proc_fops;
+ else
+ printk(KERN_WARNING "rtc: Failed to register with procfs.\n");
#endif
- release_region(RTC_PORT(0), RTC_IO_EXTENT);
- misc_deregister(&rtc_dev);
- return -ENOMEM;
- }
- ent->proc_fops = &rtc_proc_fops;
#if defined(__alpha__) || defined(__mips__)
rtc_freq = HZ;
@@ -1167,6 +1167,7 @@ static void rtc_dropped_irq(unsigned long data)
}
#endif
+#ifdef CONFIG_PROC_FS
/*
* Info exported via "/proc/driver/rtc".
*/
@@ -1251,6 +1252,7 @@ static int rtc_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, rtc_proc_show, NULL);
}
+#endif
void rtc_get_rtc_time(struct rtc_time *rtc_tm)
{