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i2c: Check for ACPI resource conflicts

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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>
This commit is contained in:
Jean Delvare
2008-07-14 22:38:33 +02:00
committed by Jean Delvare
parent 2373c1801a
commit 54fb4a05af
13 changed files with 67 additions and 0 deletions
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6
drivers/i2c/busses/i2c-sis630.c
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@@ -55,6 +55,7 @@
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/acpi.h>
#include <asm/io.h>
/* SIS630 SMBus registers */
@@ -437,6 +438,11 @@ static int sis630_setup(struct pci_dev *sis630_dev)
dev_dbg(&sis630_dev->dev, "ACPI base at 0x%04x\n", acpi_base);
retval = acpi_check_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION,
sis630_driver.name);
if (retval)
goto exit;
/* Everything is happy, let's grab the memory and set things up. */
if (!request_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION,
sis630_driver.name)) {