extcon: Fix attached value returned by is_extcon_changed

commit f4513b065f7dbd37224226ef6e44b09eff742776 upstream.

is_extcon_changed should only check the idx-th bit of new, not
the entirety of new when setting attached.

This fixes extcon sending notifications that a cable was inserted when
it gets removed while another cable is still connected.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index a394ca419715ee2f5f480facc0f2370741886d9d..ca94f475fd05a90c695511fa29cfca9c69977473 100644 (file)
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -159,7 +159,7 @@ static int find_cable_index_by_name(struct extcon_dev *edev, const char *name)
 static bool is_extcon_changed(u32 prev, u32 new, int idx, bool *attached)
 {
        if (((prev >> idx) & 0x1) != ((new >> idx) & 0x1)) {
-               *attached = new ? true : false;
+               *attached = ((new >> idx) & 0x1) ? true : false;
                return true;
        }