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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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5
drivers/i2c/busses/i2c-i801.c
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@@ -64,6 +64,7 @@
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/acpi.h>
#include <asm/io.h>
/* I801 SMBus address offsets */
@@ -624,6 +625,10 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
goto exit;
}
err = acpi_check_resource_conflict(&dev->resource[SMBBAR]);
if (err)
goto exit;
err = pci_request_region(dev, SMBBAR, i801_driver.name);
if (err) {
dev_err(&dev->dev, "Failed to request SMBus region "