openwrt/target/linux/generic/backport-5.15/795-v6.3-03-r8152-avoid-to-change-cfg-for-all-devices.patch
Marty Jones 34d2964554 kernel: backport fixes for realtek r8152
Fixes issues with RTL8156 2.5G USB adapters

- # ethtool eth1
Settings for eth1:
        Supported ports: [ ]
        Supported link modes:   Not reported
        Supported pause frame use: No
        Supports auto-negotiation: No
        Supported FEC modes: Not reported
        Advertised link modes:  Not reported
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Advertised FEC modes: Not reported
        Speed: 2500Mb/s
        Duplex: Half
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: off
        MDI-X: Unknown
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes
- #

- r8152: break the loop when the budget is exhausted
- r8152: Block future register access if register access fails
- r8152: Rename RTL8152_UNPLUG to RTL8152_INACCESSIBLE
- r8152: add vendor/device ID pair for D-Link DUB-E250
- r8152: try to use a normal budget
- r8152: set bp in bulk
- r8152: adjust generic_ocp_write function
- r8152: fix the autosuspend doesn't work
- r8152: Add __GFP_NOWARN to big allocations
- r8152: reduce the control transfer of rtl8152_get_version()
- r8152: remove rtl_vendor_mode function
- r8152: avoid to change cfg for all devices
- r8152: add USB device driver for config selection
- r8152: use napi_gro_frags
- cdc_ether: no need to blacklist any r8152 devices
- cdc_ether: add u-blox 0x1313 composition

Build system: x86_64
Build-tested: bcm2711, rockchip, x86/64
Run-tested: bcm2711/RPi4B, rockchip/nanopi r2s, x86/64

Signed-off-by: Marty Jones <mj8263788@gmail.com>
2023-12-02 21:57:38 +01:00

65 lines
2.0 KiB
Diff

From 0d4cda805a183bbe523f2407edb5c14ade50b841 Mon Sep 17 00:00:00 2001
From: Hayes Wang <hayeswang@realtek.com>
Date: Tue, 17 Jan 2023 11:03:44 +0800
Subject: [PATCH] r8152: avoid to change cfg for all devices
The rtl8152_cfgselector_probe() should set the USB configuration to the
vendor mode only for the devices which the driver (r8152) supports.
Otherwise, no driver would be used for such devices.
Fixes: ec51fbd1b8a2 ("r8152: add USB device driver for config selection")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/r8152.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -9531,9 +9531,8 @@ static int rtl_fw_init(struct r8152 *tp)
return 0;
}
-u8 rtl8152_get_version(struct usb_interface *intf)
+static u8 __rtl_get_hw_ver(struct usb_device *udev)
{
- struct usb_device *udev = interface_to_usbdev(intf);
u32 ocp_data = 0;
__le32 *tmp;
u8 version;
@@ -9603,10 +9602,19 @@ u8 rtl8152_get_version(struct usb_interf
break;
default:
version = RTL_VER_UNKNOWN;
- dev_info(&intf->dev, "Unknown version 0x%04x\n", ocp_data);
+ dev_info(&udev->dev, "Unknown version 0x%04x\n", ocp_data);
break;
}
+ return version;
+}
+
+u8 rtl8152_get_version(struct usb_interface *intf)
+{
+ u8 version;
+
+ version = __rtl_get_hw_ver(interface_to_usbdev(intf));
+
dev_dbg(&intf->dev, "Detected version 0x%04x\n", version);
return version;
@@ -9890,6 +9898,12 @@ static int rtl8152_cfgselector_probe(str
struct usb_host_config *c;
int i, num_configs;
+ /* Switch the device to vendor mode, if and only if the vendor mode
+ * driver supports it.
+ */
+ if (__rtl_get_hw_ver(udev) == RTL_VER_UNKNOWN)
+ return 0;
+
/* The vendor mode is not always config #1, so to find it out. */
c = udev->config;
num_configs = udev->descriptor.bNumConfigurations;