[PATCH net 2/9] r8152: reset flow control patch when linking on for RTL8153B

[Hayes Wang <hayeswang@xxxxxxxxxxx>]

When linking ON, the patch of flow control has to be reset. This
makes sure the patch works normally.

Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
---
 drivers/net/usb/r8152.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 115559707683..64efd58279b3 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2857,6 +2857,7 @@ static void r8153_set_rx_early_size(struct r8152 *tp)
 
 static int rtl8153_enable(struct r8152 *tp)
 {
+	u32 ocp_data;
 	if (test_bit(RTL8152_UNPLUG, &tp->flags))
 		return -ENODEV;
 
@@ -2865,6 +2866,15 @@ static int rtl8153_enable(struct r8152 *tp)
 	r8153_set_rx_early_timeout(tp);
 	r8153_set_rx_early_size(tp);
 
+	if (tp->version == RTL_VER_09) {
+		ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_TASK);
+		ocp_data &= ~FC_PATCH_TASK;
+		ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);
+		usleep_range(1000, 2000);
+		ocp_data |= FC_PATCH_TASK;
+		ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);
+	}
+
 	return rtl_enable(tp);
 }
 
-- 
2.21.0