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| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2007-11-14 16:59:56 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-14 18:45:41 -0800 |
| commit | 4c06be10c790008aa2b2d19df2872ff39990b7bd (patch) | |
| tree | 859d05beb7800749c6019e4beb61ecd893916dbe /drivers/char/rtc.c | |
| parent | c06a018fa5362fa9ed0768bd747c0fab26bc8849 (diff) | |
| download | linux-4c06be10c790008aa2b2d19df2872ff39990b7bd.tar.gz linux-4c06be10c790008aa2b2d19df2872ff39990b7bd.tar.bz2 linux-4c06be10c790008aa2b2d19df2872ff39990b7bd.zip | |
rtc: release correct region in error path
The misc_register() error path always released an I/O port region,
even if the region was memory-mapped (only mips uses memory-mapped RTC,
as far as I can see).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/rtc.c')
| -rw-r--r-- | drivers/char/rtc.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c index ec6b65ec69ea..a162e1b3d5d3 100644 --- a/drivers/char/rtc.c +++ b/drivers/char/rtc.c @@ -918,6 +918,14 @@ static const struct file_operations rtc_proc_fops = { }; #endif +static void rtc_release_region(void) +{ + if (RTC_IOMAPPED) + release_region(RTC_PORT(0), RTC_IO_EXTENT); + else + release_mem_region(RTC_PORT(0), RTC_IO_EXTENT); +} + static int __init rtc_init(void) { #ifdef CONFIG_PROC_FS @@ -992,10 +1000,7 @@ no_irq: /* Yeah right, seeing as irq 8 doesn't even hit the bus. */ rtc_has_irq = 0; printk(KERN_ERR "rtc: IRQ %d is not free.\n", RTC_IRQ); - if (RTC_IOMAPPED) - release_region(RTC_PORT(0), RTC_IO_EXTENT); - else - release_mem_region(RTC_PORT(0), RTC_IO_EXTENT); + rtc_release_region(); return -EIO; } hpet_rtc_timer_init(); @@ -1009,7 +1014,7 @@ no_irq: free_irq(RTC_IRQ, NULL); rtc_has_irq = 0; #endif - release_region(RTC_PORT(0), RTC_IO_EXTENT); + rtc_release_region(); return -ENODEV; } @@ -1091,10 +1096,7 @@ static void __exit rtc_exit (void) if (rtc_has_irq) free_irq (rtc_irq, &rtc_port); #else - if (RTC_IOMAPPED) - release_region(RTC_PORT(0), RTC_IO_EXTENT); - else - release_mem_region(RTC_PORT(0), RTC_IO_EXTENT); + rtc_release_region(); #ifdef RTC_IRQ if (rtc_has_irq) free_irq (RTC_IRQ, NULL); |