Since Linux 4.6, mtd->priv no longer points to the NAND specific
structure. Under 4.9 it contains NULL, thus using it to access
the fields of the nand_chip structure causes an invalid pointer
dereference.
Update the code to use the mtd_to_nand() helper under 4.9 to obtain
the address of the chip specific data.
Compile tested only.
Fixes: 7bbf4117c6 ("ar71xx: Add kernel 4.9 support")
Signed-off-by: Gabor Juhos <juhosg@freemail.hu>
Tested-by: Christian Lamparter <chunkeey@gmail.com>
This reverts commit 256990cbc0.
this commit caused a compile error
"TL_WR1043_V5_GPIO_LED_WANORANGE" is undefined.
Signed-off-by: John Crispin <john@phrozen.org>
Add missing definitions for the orange WAN LED on the TL-WR1043N(D) v4 and
v5. Minor format correction on a constant for consistency.
Signed-off-by: Tim Thorpe <tim@tfthorpe.net>
Qualcomm claims this reduces cache misses. Original commit message below:
From: Ben Menchaca <ben.menchaca@qca.qualcomm.com>
Date: Tue, 11 Jun 2013 12:18:46 -0500
Subject: [ag71xx] reduce NAPI weight
In an attempt to increase our cache warmth, we are decreasing NAPI.
This increases the warmth of the reused SKBs.
Signed-off-by: Ben Menchaca <ben.menchaca@qca.qualcomm.com>
Signed-off-by: Rosen Penev <rosenp@gmail.com>
The motivation for this was misguided. It turns out tuning the NAPI weight could be useful for testing purposes. Therefore reverting.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
This commit fixes LAN Port 1 not transferring data in case no
other LAN Port has active link-state on TP-Link Archer C58/C59.
Signed-off-by: David Bauer <mail@david-bauer.net>
TP-Link TL-WR802N v1 and v2 are set up with almost same configuration in
the mach-files. Merge the mach-files of these devices.
Signed-off-by: Paul Wassi <p.wassi@gmx.at>
TP-Link TL-WR1043N v5 appears to be identical to the TL-WR1043ND v4,
except that the USB port has been removed and there is no longer a
removable antenna option.
The software is more in line with the Archer series in that it uses a
nested bootloader scheme.
Specifications:
- QCA9563 at 775 MHz
- 64 MB RAM
- 16 MB flash
- 3 (non-detachable) Antennas / 450 Mbit
- 1x/4x WAN/LAN Gbps Ethernet (QCA8337)
- reset and Wi-Fi buttons
Signed-off-by: Tim Thorpe <tim@tfthorpe.net>
Signed-off-by: Ludwig Thomeczek <ledesrc@wxorx.net>
The TL-WA901ND v5 has the same hardware as v4, although the PCB has
a different layout. Installation from factory is done via TFTP.
(rename -factory image to wa901ndv4_tp_recovery.bin for tftp)
Signed-off-by: Paul Wassi <p.wassi@gmx.at>
This patch adds support for the MikroTik RouterBOARD mAP 2nD
https://mikrotik.com/product/RBmAP2nD
Specifications:
- SoC: Qualcomm QCA9531 (650 MHz)
- RAM: 64 MB
- Storage: 16 MB NOR SPI flash
- Wireless: builtin QCA9531, 2x2:2
- Ethernet: 2x100M (802.3af/at POE in and passive POE out on ETH2)
- USB: microUSB type AB port
This patch adds missing code to fully support mAP. Machfile already
contained configuration for mAP 2nD, but device specific configuration
like LEDs etc., was missing.
Note: The POE LED works but doesn't turn on when POE passthrough is
enabled, despite being configured with GPIO trigger.
Installation
1. Login to the Mikrotik WebUI to backup your licence keys
2. Setup a DHCP/BOOTP server with:
- DHCP-Option 66 (TFTP server name) pointing to a local TFTP
server within the same subnet of the DHCP range
- DHCP-Option 67 (Bootfile-Name) matching the initramfs filename
of the to be booted image
3. Connect the port labeled internet to your local network
4. Keep the reset button pushed down and power on the board
The board should load and start the initramfs image from the TFTP
server. Login as root/without password to the started LEDE via SSH
listing on IPv4 address 192.168.1.1. Use sysupgrade to install LEDE.
Revert to RouterOS
Use the "rbcfg" package on in LEDE:
- rbcfg set boot_protocol bootp
- rbcfg set boot_device ethnand
- rbcfg apply
Open Netinstall and reboot routerboard. Now Netinstall sees RouterBOARD
and you can install RouterOS. If NetInstall gets stuck on Sending offer
just wait for it to timeout and then close and open Netinstall again.
Click on install again.
In order for RouterOS to function properly, you need to restore license
for the device. You can do that by including license in NetInstall.
Signed-off-by: Robert Marko <robimarko@gmail.com>
This patch adds support for the MikroTik RouterBOARD wAP
https://mikrotik.com/product/RBwAP2nD
Specifications:
- SoC: Qualcomm QCA9533 (650 MHz)
- RAM: 64 MB
- Storage: 16 MB NOR SPI flash
- Wireless: built-in QCA9533, 2x2:2
- Ethernet: 1x100M (802.3af/at POE in)
This patch adds missing code to fully support wAP. Machfile already
contained configuration for wAP 2nD but device specific configuration
like LEDs etc. was missing.
Installation:
1. Login to the Mikrotik WebUI to backup your licence keys
2. Setup a DHCP/BOOTP server with:
- DHCP-Option 66 (TFTP server name) pointing to a local TFTP
server within the same subnet of the DHCP range
- DHCP-Option 67 (Bootfile-Name) matching the initramfs filename
of the to be booted image
3. Connect the port labeled internet to your local network
4. Keep the reset button pushed down and power on the board
The board should load and start the initramfs image from the TFTP
server. Login as root/without password to the started LEDE via SSH
listing on IPv4 address 192.168.1.1. Use sysupgrade to install LEDE.
Revert to RouterOS
Use the "rbcfg" package on in LEDE:
- rbcfg set boot_protocol bootp
- rbcfg set boot_device ethnand
- rbcfg apply
Open Netinstall and reboot routerboard. Now Netinstall sees RouterBOARD
and you can install RouterOS. If NetInstall gets stuck on Sending offer
just wait for it to timeout and then close and open Netinstall again.
Click on install again.
In order for RouterOS to function properly, you need to restore license
for the device. You can do that by including license in NetInstall.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Wallys DR342 is a 5 GHz, 2T2R AP/CPE board based on Atheros AR9342.
Short specification:
- 560/450/225 MHz (CPU/DDR/AHB)
- 1x Gbps Ethernet (AR8035) with passive PoE support (24-56 V)
- 64 MB of RAM (DDR2)
- 16 MB of FLASH
- 2T2R 5 GHz with external FEM (SKY85728-11), up to 30 dBm
- 2x MMCX connectors
- miniPCIe connector with PCIe and USB 2.0 buses
- optional miniSIM slot
- 7x LED, 1x button
- UART, (E)JTAG and LED headers
- 1x DC jack for main power (12-56 V)
Flash instruction (do it under U-Boot, using UART):
1. tftp 0x82000000 lede-ar71xx-generic-dr342-squashfs-sysupgrade.bin
2. erase 0x9f050000 +$filesize
3. cp.b $fileaddr 0x9f050000 $filesize
4. setenv bootcmd "bootm 0x9f050000"
5. saveenv && reset
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
This fixes the LED configuration for the D-Link DIR-869 A1. In order to
support the device I probed around using an initramfs image for the
UniFi AC. Pulling GPIO 15 to low enabled the LEDs while high disabled them.
GPIO 16 set to low meant that the color was white while pulling it to high
made the color change to orange. The past code was written based upon these
findings.
However, running a flashed image I now discovered that GPIO 15 controls the
orange LEDs while GPIO 16 controls the white ones and that both are active
when low. This means that the GPIOs were inverted and one active_low was set
wrong which this patch fixes.
Behavior of the LED front after this patch is applied:
cat /sys/devices/platform/leds-gpio/leds/d-link:white:status/brightness
0 -> white LEDs are OFF
255 -> white LEDs are ON
cat /sys/devices/platform/leds-gpio/leds/d-link🍊status/brightness
0 -> orange LEDs are OFF
255 -> orange LEDs are ON
If the brightness of both is set to 255 the LED front will be white.
If the brightness of both is set to 0 the LED front will be off.
Signed-off-by: Florian Beier <beier.florian@gmail.com>
The GPIOs are used for defined LEDs and therefore are ignored/unset in
the ath9k driver since 192f0a3db8. The wireless led led trigger is
added in userspace since e20965811d, which makes the
ap9x_pci_setup_wmac_led_pin() superfluous.
Signed-off-by: Mathias Kresin <dev@kresin.me>
The platform data was missing the num_registers element which is now
mandatory in linux 4.9
Without this patch, the gpio probing would fail with:
gpio gpiochip1: (74x164): tried to insert a GPIO chip with zero lines
Fixes: #1106
Tested-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
Add the respective colour to the LED's names for the GL-AR150 to be conform
to the kernel. Also add netdev triggers for the LAN and WAN LED.
Signed-off-by: Paul Wassi <p.wassi@gmx.at>
In 4.9, gpio count is rounded up to 32 due to the use of bgpio in the
ath79 gpio controller driver.
Fix base values in mach files to account for that
Signed-off-by: Felix Fietkau <nbd@nbd.name>
TP-Link Archer C7 v4 is a dual-band AC1750 router, based on Qualcomm/Atheros
QCA9561+QCA9888.
Specification:
- 775/650/258 MHz (CPU/DDR/AHB)
- 128 MB of RAM (DDR2)
- 16 MB of FLASH (SPI NOR)
- 3T3R 2.4 GHz
- 3T3R 5 GHz
- 5x 10/100/1000 Mbps Ethernet
- 7x LED, 2x button
- UART header on PCB
Flash instruction:
1. Upload lede-ar71xx-generic-archer-c7-v4-squashfs-factory.bin via Web interface
Flash instruction using TFTP recovery:
1. Set PC to fixed ip address 192.168.0.66
2. Download lede-ar71xx-generic-archer-c7-v4-squashfs-factory.bin
and rename it to ArcherC7v4_tp_recovery.bin
3. Start a tftp server with the file tp_recovery.bin in its root directory
4. Turn off the router
5. Press and hold Reset button
6. Turn on router with the reset button pressed and wait ~15 seconds
7. Release the reset button and after a short time
the firmware should be transferred from the tftp server
8. Wait ~30 second to complete recovery.
Flash instruction under U-Boot, using UART:
1. tftp 0x81000000 lede-ar71xx-...-sysupgrade.bin
2. erase 0x9f040000 +$filesize
3. cp.b $fileaddr 0x9f040000 $filesize
4. reset
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Specifications:
- SoC: Qualcomm QCA9558 (720 MHz)
- RAM: 256MB
- Storage: 1MB NOR, 128 MB NAND flash
- Ethernet: 1x1000M
Installation:
1. Connect to serial console on the board
2. Boot initramfs image over u-boot
3. Copy image to the device and run sysupgrade
Installation without serial console is not supported at this time
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This reverts commit 13e5e47369.
This commit causes a severe regression in LAN->WAN routing performance
for several devices. This appears to be caused by the extra requirement
to validate the SKB checksum early in the rx path, which the ethernet
hardware does not do
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Specifications:
- SoC: Qualcomm QCA9531 (650MHz)
- RAM: 64MB
- Storage: 16MB NOR SPI flash
- Ethernet: 5x100M (1 PoE in, 4 PoE out)
- Outdoor use ready
This ethernet router is based on the same platform as the hEX PoE lite.
Installation
1. login to the Mikrotik WebUI to backup your licence keys
2. setup a DHCP/BOOTP Server with:
* DHCP-Option 66 (TFTP server name) pointing to a local TFTP
Server within the same subnet of the DHCP range
* DHCP-Option 67 (Bootfile-Name) matching the initramfs filename
of the to be booted image
3. connect the port labled internet to your local network
4. keep the reset button pushed down and power on the board
The board should load and start the initramfs image from the TFTP
Server. Login as root/without password to the started LEDE via ssh
listing on IPv4 address 192.168.1.1. Use sysupgrade to install LEDE.
Revert to RouterOS
Use the "rbcfg" package on in LEDE:
* rbcfg set boot_protocol bootp
* rbcfg set boot_device ethnand
* rbcfg apply
Open Netinstall and reboot routerboard. Now netinstall sees routerboard
and you can install RouterOS. If NetInstall gets stuck on Sending offer
just wait for it to timeout and then close and open Netinstall again.
Click on install again.
In order for RouterOS to function properly, you need to restore license
for the device. You can do that by including license in NetInstall
Signed-off-by: Robert Marko <robimarko@gmail.com>
This add support for kernel 4.9 to the ar71xx target.
It was compile tested with the generic, NAND and mikrotik subtarget.
Multiple members of the community tested it on their boards and did not
report any major problem so far.
Especially the NAND part received some changes to adapt to the new
kernel APIs. The serial driver hack used for the Arduino Yun was not
ported because the kernel changed there a lot.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Evaluation board 2.2 uses a different status LED pin
The other removed LEDs were never present
Signed-off-by: Catrinel Catrinescu <cc@80211.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The addresses were read from the 'config' partition, which would not always
contain the addresses at the same offsets, depending on the stock firmware
version used before flashing LEDE. Change this to get the addresses from
the 'product-info' partition, which is read-only.
Reported-and-tested-by: Andreas Ziegler <ml@andreas-ziegler.de>
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
On a TL-WN710N, this patch increases iperf performance from ~92.5 to ~93.5 mbps. Keep in mind the WN710N is a 100mbps device. I expect greater numbers from gigabit devices.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
COMFAST CF-E355AC is a ceiling mount AP with PoE support, based on
Qualcomm/Atheros QCA9531 + QCA9882.
Short specification:
- 2x 10/100 Mbps Ethernet, with PoE support
- 64MB of RAM (DDR2)
- 16 MB of FLASH
- 2T2R 2.4 GHz, 802.11b/g/n
- 2T2R 5 GHz, 802.11ac/n/a
- built-in 4x 3 dBi antennas
- output power (max): 500 mW (27 dBm)
- 1x RGB LED, 1x button
- built-in watchdog chipset
Flash instruction:
Original firmware is based on OpenWrt.
Use sysupgrade image directly in vendor GUI.
Signed-off-by: Enrique Giraldo <enrique.giraldo@galgus.net>
[whitespace fixes, ac radio caldata offset fix]
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
GL.iNet GL-USB150 is an USB dongle WiFi router, based on Atheros AR9331.
Specification:
- 400/400/200 MHz (CPU/DDR/AHB)
- 64 MB of RAM (DDR2)
- 16 MB of FLASH (SPI NOR)
- Realtek RTL8152B USB to Ethernet bridge (connected with AR9331 PHY4)
- 1T1R 2.4 GHz
- 2x LED, 1x button
- UART header on PCB
Flash instruction:
Vendor firmware is based on OpenWrt CC. GUI or sysupgrade can be used
to flash LEDE firmware.
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
1. Add support to LAN/WAN LEDs attached to ar8327.
2. Fix the problem that LAN/WAN LEDs does not blink in hardware (auto)
mode when connected to 10M/100M ethernet.
Signed-off-by: Kuang Rufan <master@a1983.com.cn>
ALFA Network AP121F is a pocket-size router dedicated for VPN/TOR users.
Device is based on Atheros AR9331 WiSoC and is running a custom version
(updated from OpenWrt CC to LEDE 17.01 release) of NetAidKit firmware.
Specification:
- 400/400/200 MHz (CPU/DDR/AHB)
- 64 MB of RAM (DDR1)
- 16 MB of FLASH (SPI NOR)
- 1x 10/100 Mbps Ethernet
- 1T1R 2.4 GHz
- 1x microSD (optional, on separate PCB)
- 3x LED, 1x button, 1x switch
- UART header on PCB
Flash instruction (under U-Boot web recovery mode):
1. Configure PC with static IP 192.168.1.2/24.
2. Connect PC with RJ45 port, press the reset button, power up device,
wait for first blink of all LEDs (indicates network setup), then keep
button for 3 following blinks and release it.
3. Open 192.168.1.1 address in your browser and upload sysupgrade image.
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
It is quite unexpected behaviour when the Power LED switches off as soon
as the kernel starts booting. So set the default state to 'Keep' for
the Power LEDs of all RouterBOARDs (e.g. RB91x, SXT Lite series, etc.).
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
[switch the default state to keep instead of on]
Signed-off-by: Mathias Kresin <dev@kresin.me>
TP-Link TL-WR902AC has another one, tiny LED inside RJ45 socket which is
attached to GPIO15. Add support for it, use it as a "lan" LED and rename
old one to "internet". Also, fix uci option name for "lan" LED in system
configuration ("wan" -> "lan").
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
TP-Link TL-WR902AC v1 is a pocket-size, dual-band (AC750), successor of
TL-MR3020 (both devices use very similar enclosure, in same size). New
device is based on Qualcomm QCA9531 v2 + QCA9887. FCC ID: TE7WR902AC.
Specification:
- 650/391/216 MHz (CPU/DDR/AHB)
- 1x 10/100 Mbps Ethernet
- 1x USB 2.0 (GPIO-controlled power)
- 64 MB of RAM (DDR2)
- 8 MB of FLASH
- 2T2R 2.4 GHz (QCA9531)
- 1T1R 5 GHz (QCA9887)
- 5x LED (GPIO-controlled), 2x button, 1x 3-pos switch
- UART pads on PCB (TP1 -> TX, TP2 -> RX, TP3 -> GND, TP4 -> 3V3, jumper
resitors are missing on TX/RX lines)
- 1x micro USB (for power only)
Flash instructions:
Use "factory" image under vendor GUI.
Recovery instructions:
This device contains tftp recovery mode inside U-Boot. You can use it to
flash LEDE (use "factory" image) or vendor firmware.
1. Configure PC with static IP 192.168.0.66/24 and tftp server.
2. Rename "lede-ar71xx-generic-tl-wr902ac-v1-squashfs-factory.bin"
to "wr902acv1_un_tp_recovery.bin" and place it in tftp server dir.
3. Connect PC with LAN port, press the reset button, power up the router
and keep button pressed until WPS LED lights up.
4. Router will download file from server, write it to flash and reboot.
Root access over serial line in vendor firmware: root/sohoadmin.
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
TP-Link Archer C58 v1 is a dual-band AC1350 router, based on Qualcomm
QCA9561 + QCA9886. It looks like Archer C59 v1 without USB port.
Specification:
- 775/650/258 MHz (CPU/DDR/AHB)
- 64 MB of RAM (DDR2)
- 8 MB of FLASH (SPI NOR)
- 3T3R 2.4 GHz
- 2T2R 5 GHz
- 5x 10/100 Mbps Ethernet
- 6x LED, 3x button
- UART header on PCB, RX, TX at TP4+5 (backside)
QCA9886 wlan needs pre_cal_data file and enable ieee80211 phy hotplug to
patch macaddress.
Flash instruction:
Use "factory" image directly in vendor GUI.
Recovery method:
1. Set PC to fixed ip address 192.168.0.66/24.
2. Download "lede-ar71xx-generic-archer-c58-v1-squashfs-factory.bin" and
rename it to "tp_recovery.bin".
3. Start a tftp server with the file "tp_recovery.bin" in its root
directory.
4. Turn off the router.
5. Press and hold Reset button.
6. Turn on router with the reset button pressed and wait ~15 seconds.
7. Release the reset button and after a short time the firmware should
be transferred from the tftp server.
8. Wait ~30 second to complete recovery.
Flash instruction under U-Boot, using UART:
tftp 0x81000000 lede-ar71xx-...-sysupgrade.bin
erase 0x9f020000 +$filesize
cp.b $fileaddr 0x9f020000 $filesize
reset
This commit is based on GitHub PR#1112
Signed-off-by: Henryk Heisig <hyniu@o2.pl>
TP-Link TL-WA855RE v1 is a wall-plug N300 Wi-Fi range extender,
based on Qualcomm/Atheros QCA9533 v2.
Short specification:
- 550/397/198 MHz (CPU/DDR/AHB)
- 1x 10/100 Mbps Ethernet
- 32 MB of RAM (DDR1)
- 4 MB of FLASH
- 2T2R 2.4 GHz
- 2x external antennas
- 2x LED (green and orange in the same package), 2x button
- UART: TP5(TX) and TP4(RX) test points on PCB
Flash instruction: use "factory" image directly in vendor GUI.
Warning: this device does not include any kind of recovery mechanism
in the bootloader and disassembling process is not trivial.
You can access vendor firmware over serial line using:
- login: root
- password: sohoadmin
Image was tested only in EU version of the device, but should work
also with the same device version sold in other countries.
Signed-off-by: Federico Cappon <dududede371@gmail.com>
This way, the assigned addresses match those on the barcode labels.
Otherwise, the addresses appear to vary on boot.
Signed-off-by: Leon M. George <leon@georgemail.eu>
Specifications:
* SoC: AR7242 (Virian 400MHz)
* RAM: 64 MB DDR (W9751G6JB-25)
* Flash: 16MB SPI flash (S25FL129PIF)
* WiFi: AR9382 (2.4/5GHz) + 2x SE2595L
* LAN: 1x1000M (PEF7071V)
To install LEDE via EVA bootloader, a FTP connection need to be
established to 192.168.178.1 within the first seconds after power on:
ftp> quote USER adam2
ftp> quote PASS adam2
ftp> binary
ftp> debug
ftp> passive
ftp> quote MEDIA FLSH
ftp> put lede-ar71xx-generic-fritz300e-squashfs-sysupgrade.bin mtd1
Signed-off-by: Mathias Kresin <dev@kresin.me>
TP-Link TL-WR942N v1 is a 2.4 GHz single-band N450 router, based on
Qualcomm/Atheros QCA9561.
Specification:
- 775/650/258 MHz (CPU/DDR/AHB)
- 128 MB of RAM (DDR2)
- 16 MB of FLASH (SPI NOR)
- 3T3R 2.4 GHz
- 5x 10/100 Mbps Ethernet
- 2x USB 2.0
- 11x LED (most are controlled by 74HC595)
- 2x button
- UART header on PCB*
* Serial console is disabled in OEM non-beta firmwares and corresponding
GPIO pins 14 and 15 are assigned to control USB1 and USB2 LEDs by
production (non-beta) U-Boot and firmware.
Currently not working:
1. USB1 and USB2 LEDs if UART RX and TX pins are assigned to their GPIOs
by some U-Boot versions.
Flash instruction under vendor GUI:
1. Download "lede-ar71xx-generic-tl-wr942n-v1-squashfs-factory.bin".
2. Go to WEB interface and perform usual firmware upgrade.
FLash instruction under U-Boot recovery mode (doesn't work in beta
firmware):
1. Setup PC with static IP "192.168.0.66/24" and tftp server.
2. Change "*-factory" image filename to "WR942v1_recovery.bin" and make
it available to download from your tftp server.
3. Press "reset" button and power up the router, wait till "WPS" LED
turns on.
Flash instruction under U-Boot, using UART (can be done only with
preinstalled UART-enabled U-Boot version!):
1. Use "tpl" to stop autobooting and obtain U-Boot CLI access.
2. Setup ip addresses for U-Boot and your tftp server.
3. Issue below commands:
tftp 0x81000000 lede-ar71xx-generic-tl-wr942n-v1-sysupgrade.bin
erase 0x9f020000 +$filesize
cp.b 0x81000000 0x9f020000 $filesize
reset
Signed-off-by: Serg Studzinskii <serguzhg@gmail.com>
[minor code style fixes, extended commit message]
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
ag71xx_ethtool_set_ringparam() will return an uninitialized value on
success.
Found-by: Coverity Scan #1330877
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
