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[4.9,022/199] extcon: max8997: Fix lack of path setting in USB device mode

Message ID 20191219183216.039083350@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Dec. 19, 2019, 6:31 p.m. UTC 
From: Marek Szyprowski <m.szyprowski@samsung.com>


[ Upstream commit a2dc50914744eea9f83a70a5db0486be625e5dc0 ]

MAX8997 driver disables automatic path selection from MicroUSB connector
and manually sets path to either UART or USB lines. However the code for
setting USB path worked only for USB host mode (when ID pin is set
to ground). When standard USB cable (USB device mode) is connected, path
registers are not touched. This means that once the non-USB accessory is
connected to MAX8997-operated micro USB port, the path is no longer set
to USB and USB device mode doesn't work. This patch fixes it by setting
USB path both for USB and USB host modes.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

Signed-off-by: Sasha Levin <sashal@kernel.org>

---
 drivers/extcon/extcon-max8997.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

-- 
2.20.1
diff mbox series

Patch

diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 4a0612fb9c070..b9b48d45a6dc4 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -321,12 +321,10 @@  static int max8997_muic_handle_usb(struct max8997_muic_info *info,
 {
 	int ret = 0;
 
-	if (usb_type == MAX8997_USB_HOST) {
-		ret = max8997_muic_set_path(info, info->path_usb, attached);
-		if (ret < 0) {
-			dev_err(info->dev, "failed to update muic register\n");
-			return ret;
-		}
+	ret = max8997_muic_set_path(info, info->path_usb, attached);
+	if (ret < 0) {
+		dev_err(info->dev, "failed to update muic register\n");
+		return ret;
 	}
 
 	switch (usb_type) {