netdev - [PATCH net v3 2/9] r8152: reset flow control patch when linking on for RTL8153B

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Date:   Wed, 22 Jan 2020 16:02:06 +0800
From:   Hayes Wang <hayeswang@...ltek.com>
To:     <netdev@...r.kernel.org>
CC:     <nic_swsd@...ltek.com>, <linux-kernel@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <pmalani@...omium.org>,
        <grundler@...omium.org>, Hayes Wang <hayeswang@...ltek.com>
Subject: [PATCH net v3 2/9] 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@...ltek.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