mfd: core: Fix ACPI child matching by _HID/_CID

If MDF child devices have separate ACPI nodes identified
by _HID/_CID, they will not be assigned the intended
ACPI companion.

acpi_match_device_ids will return 0 if a the child device
matches the _HID/_CID, so this patch changes the matching
condition to check for 0 on success.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Acked-by: Mika Westerberg <mika.westeberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 88bd1b1..409da01 100644 (file)
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -107,7 +107,7 @@ static void mfd_acpi_add_device(const struct mfd_cell *cell,
 
                        strlcpy(ids[0].id, match->pnpid, sizeof(ids[0].id));
                        list_for_each_entry(child, &parent->children, node) {
-                               if (acpi_match_device_ids(child, ids)) {
+                               if (!acpi_match_device_ids(child, ids)) {
                                        adev = child;
                                        break;
                                }