i2c: Fix error value returned by several bus drivers
commit 7c1f59c9d5caf3a84f35549b5d58f3c055a68da5 upstream.
When adding checks for ACPI resource conflicts to many bus drivers,
not enough attention was paid to the error paths, and for several
drivers this causes 0 to be returned on error in some cases. Fix this
by properly returning a non-zero value on every error.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index 0b012f1..58261d4 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -324,7 +324,7 @@
const struct pci_device_id *id)
{
unsigned char temp;
- int error = -ENODEV;
+ int error;
/* Determine the address of the SMBus areas */
if (force_addr) {
@@ -390,6 +390,7 @@
dev_err(&pdev->dev, "SMBUS: Error: Host SMBus "
"controller not enabled! - upgrade BIOS or "
"use force=1\n");
+ error = -ENODEV;
goto release_region;
}
}
@@ -422,9 +423,11 @@
"SMBus Via Pro adapter at %04x", vt596_smba);
vt596_pdev = pci_dev_get(pdev);
- if (i2c_add_adapter(&vt596_adapter)) {
+ error = i2c_add_adapter(&vt596_adapter);
+ if (error) {
pci_dev_put(vt596_pdev);
vt596_pdev = NULL;
+ goto release_region;
}
/* Always return failure here. This is to allow other drivers to bind