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rtc-ds1742.c should use resource_size_t for base address

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Currently the rtc driver, rtc-ds1742.c uses an unsigned long to store the
base mmio address of the NVRAM/RTC.  This breaks on systems like PowerPC
440, which is a 32-bit core with 36-bit physical addresses: IO on the
system, including the RTC, is typically above the 4GB point, and cannot fit
into an unsigned long.

This patch fixes the problem by replacing the unsigned long with a
resource_size_t.  Tested on Ebony (PPC440) (with additional patches to
instantiate the ds1742 platform device appropriately).

Signed-off-by: David Gibson <[email protected]>
Acked-by: Atsushi Nemoto <[email protected]>
Cc: Alessandro Zummo <[email protected]>
Cc: David Brownell <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
David Gibson 2007-09-18 22:46:28 -07:00 • committed by Linus Torvalds
commit 2e3e31c057
1 changed files with 1 additions and 1 deletions
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2
drivers/rtc/rtc-ds1742.c
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@ -55,7 +55,7 @@ struct rtc_plat_data {
void __iomem *ioaddr_rtc;
size_t size_nvram;
size_t size;
unsigned long baseaddr;
resource_size_t baseaddr;
unsigned long last_jiffies;
};