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From:   Hayes Wang <hayeswang@realtek.com>
To:     <netdev@vger.kernel.org>
CC:     <nic_swsd@realtek.com>, <linux-kernel@vger.kernel.org>,
        <linux-usb@vger.kernel.org>, <pmalani@chromium.org>,
        <grundler@chromium.org>, Hayes Wang <hayeswang@realtek.com>
Subject: [PATCH net v2 2/9] r8152: reset flow control patch when linking on for RTL8153B
Date:   Wed, 22 Jan 2020 09:41:14 +0800
Message-ID: <1394712342-15778-350-Taiwan-albertk@realtek.com>
In-Reply-To: <1394712342-15778-348-Taiwan-albertk@realtek.com>
References: <1394712342-15778-338-Taiwan-albertk@realtek.com>
 <1394712342-15778-348-Taiwan-albertk@realtek.com>
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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>
---
 drivers/net/usb/r8152.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 115559707683..504db2348a3e 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);
 }
 
-- 
2.21.0