i2c: Hide probe errors caused by ACPI resource conflicts

When an ACPI resource conflict is detected, error messages are already
printed by ACPI. There's no point in causing the driver core to print
more error messages, so return one of the error codes for which no
message is printed.

This fixes bug #14293:
http://bugzilla.kernel.org/show_bug.cgi?id=14293

Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index a782c7a08f9e..d26a972aacaa 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -169,7 +169,7 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev,
         }
 
         if (acpi_check_region(piix4_smba, SMBIOSIZE, piix4_driver.name))
-                return -EBUSY;
+                return -ENODEV;
 
         if (!request_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) {
                 dev_err(&PIIX4_dev->dev, "SMBus region 0x%x already in use!\n",
@@ -260,7 +260,7 @@ static int __devinit piix4_setup_sb800(struct pci_dev *PIIX4_dev,
 
         piix4_smba = ((smba_en_hi << 8) | smba_en_lo) & 0xffe0;
         if (acpi_check_region(piix4_smba, SMBIOSIZE, piix4_driver.name))
-                return -EBUSY;
+                return -ENODEV;
 
         if (!request_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) {
                 dev_err(&PIIX4_dev->dev, "SMBus region 0x%x already in use!\n",