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| author | Jan Beulich <jbeulich@novell.com> | 2006-12-13 00:35:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-13 09:05:52 -0800 |
| commit | 9cef779ec3643e6c846f86a32d8c44daff16a336 (patch) | |
| tree | 0f797b0e90876fe65f6cb6f7e7b8ec0d9dbf3efb /drivers/char | |
| parent | f3e92d355e1251fb6d1a15508f2a5448d2354727 (diff) | |
| download | blackbird-op-linux-9cef779ec3643e6c846f86a32d8c44daff16a336.tar.gz blackbird-op-linux-9cef779ec3643e6c846f86a32d8c44daff16a336.zip | |
[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')
| -rw-r--r-- | drivers/char/rtc.c | 32 |
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) { |
