From: Hayes Wang <hayeswang@realtek.com>
Date: Wed, 22 Jan 2020 08:02:06 +0000 (+0800)
Subject: r8152: reset flow control patch when linking on for RTL8153B
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f99cd20eda12b1920ffc284a736437c016b3a5a2;p=linux.git

r8152: reset flow control patch when linking on for RTL8153B

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@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 115559707683f..504db2348a3e5 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2865,6 +2865,17 @@ 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) {
+		u32 ocp_data;
+
+		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);
 }