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| author | Jean Delvare <jdelvare@suse.de> | 2008-07-14 22:38:33 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@mahadeva.delvare> | 2008-07-14 22:38:33 +0200 |
| commit | 54fb4a05af0a4b814e6716cfdf3fa97fc6be7a32 (patch) | |
| tree | b3a258dce4f1bc8ccb58541efae444ba89f9fc55 /drivers/i2c/busses/i2c-piix4.c | |
| parent | 2373c1801afd06d3a206376902b39a98458c9cfb (diff) | |
| download | blackbird-op-linux-54fb4a05af0a4b814e6716cfdf3fa97fc6be7a32.tar.gz blackbird-op-linux-54fb4a05af0a4b814e6716cfdf3fa97fc6be7a32.zip | |
i2c: Check for ACPI resource conflicts
Check for ACPI resource conflicts in i2c bus drivers. I've included
all recent SMBus master drivers for PC hardware.
I've voluntarily left out:
* Drivers that don't run on PCs: they can't conflict with ACPI.
* Bit-banged bus device drivers: it's very unlikely that ACPI would
deal with such buses.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-piix4.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index 85d69f3e624f..924e84a53488 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -39,6 +39,7 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/dmi.h> +#include <linux/acpi.h> #include <asm/io.h> @@ -168,6 +169,9 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev, } } + if (acpi_check_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) + return -EBUSY; + if (!request_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) { dev_err(&PIIX4_dev->dev, "SMBus region 0x%x already in use!\n", piix4_smba); |
