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https://github.com/openwrt/openwrt.git
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65 lines
2.0 KiB
Diff
65 lines
2.0 KiB
Diff
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From 0d4cda805a183bbe523f2407edb5c14ade50b841 Mon Sep 17 00:00:00 2001
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From: Hayes Wang <hayeswang@realtek.com>
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Date: Tue, 17 Jan 2023 11:03:44 +0800
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Subject: [PATCH] r8152: avoid to change cfg for all devices
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The rtl8152_cfgselector_probe() should set the USB configuration to the
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vendor mode only for the devices which the driver (r8152) supports.
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Otherwise, no driver would be used for such devices.
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Fixes: ec51fbd1b8a2 ("r8152: add USB device driver for config selection")
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Signed-off-by: Hayes Wang <hayeswang@realtek.com>
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Reviewed-by: Simon Horman <simon.horman@corigine.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/usb/r8152.c | 20 +++++++++++++++++---
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1 file changed, 17 insertions(+), 3 deletions(-)
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--- a/drivers/net/usb/r8152.c
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+++ b/drivers/net/usb/r8152.c
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@@ -9542,9 +9542,8 @@ static int rtl_fw_init(struct r8152 *tp)
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return 0;
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}
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-u8 rtl8152_get_version(struct usb_interface *intf)
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+static u8 __rtl_get_hw_ver(struct usb_device *udev)
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{
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- struct usb_device *udev = interface_to_usbdev(intf);
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u32 ocp_data = 0;
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__le32 *tmp;
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u8 version;
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@@ -9614,10 +9613,19 @@ u8 rtl8152_get_version(struct usb_interf
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break;
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default:
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version = RTL_VER_UNKNOWN;
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- dev_info(&intf->dev, "Unknown version 0x%04x\n", ocp_data);
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+ dev_info(&udev->dev, "Unknown version 0x%04x\n", ocp_data);
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break;
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}
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+ return version;
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+}
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+
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+u8 rtl8152_get_version(struct usb_interface *intf)
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+{
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+ u8 version;
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+
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+ version = __rtl_get_hw_ver(interface_to_usbdev(intf));
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+
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dev_dbg(&intf->dev, "Detected version 0x%04x\n", version);
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return version;
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@@ -9917,6 +9925,12 @@ static int rtl8152_cfgselector_probe(str
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struct usb_host_config *c;
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int i, num_configs;
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+ /* Switch the device to vendor mode, if and only if the vendor mode
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+ * driver supports it.
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+ */
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+ if (__rtl_get_hw_ver(udev) == RTL_VER_UNKNOWN)
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+ return 0;
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+
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/* The vendor mode is not always config #1, so to find it out. */
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c = udev->config;
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num_configs = udev->descriptor.bNumConfigurations;
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