Commit Graph

2250 Commits

Author SHA1 Message Date
Rafał Miłecki
9a3c805584 ramips: use separated mtd patch reverting write_page() removal
This helps understanding mtd changes needed to get downstream NAND
driver working.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-11-09 13:31:47 +01:00
Koen Vandeputte
b4e17a7440 ramips: fix netgear r6120 factory image generation
as indicated in commit c5bf408ed6 "(ramips: fix image generation for mt76x8")
more rework was needed to fix the other issues.

Building on another machine, but using the same arch, showed
the application failing again for different reasons.

Fix this by completely rewriting the application, fixing following found issues:

- buffer overflows, resulting in stack corruption
- flaws in memory requirement calculations (too small, too large)
- memory leaks
- missing bounds checking on string handling
- non-reproducable images, by using unitilized memory in checksum calculation
- missing error handling, resulting in succes on specific image errors
- endianness errors when building on BE machines
- various minor build warnings
- documentation did not match the code actions (header item locations)
- allowing input to be decimal, hex or octal now

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-11-08 13:32:22 +01:00
Felix Fietkau
b318edb999 ramips: add missing DTS frequency limit for the 5 GHz radio on Archer C20i
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-11-06 22:25:49 +01:00
Koen Vandeputte
c764b2b531 kernel: bump 4.14 to 4.14.79
Refreshed all patches.

Compile-tested on: ar71xx, cns3xxx, imx6, x86_64
Runtime-tested on: ar71xx, cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-11-05 16:00:00 +01:00
Martin Weinelt
0411813c6f
ramips: fix leds on GL.iNet GL-MT300N-V2
The WAN LED now shows the link state. It's color is green,
not blue.

Signed-off-by: Martin Weinelt <hexa@darmstadt.ccc.de>
2018-11-02 21:43:15 +01:00
Baptiste Jonglez
b2c68ceea7 kernel: Add support for Winbond w25q128jv SPI NOR flash
Newer batches of several Mikrotik boards contain this yet-unsupported
flash chip, for instance:

- rb941-2nd (hAP lite)
- rb952ui-5ac2nd (hAP ac lite)
- RBM33G

and probably other Mikrotik boards need this patch as well.

The patch was submitted upstream by Robert Marko: https://patchwork.ozlabs.org/patch/934181/

Closes: FS#1715
Signed-off-by: Baptiste Jonglez <git@bitsofnetworks.org>
Cc: Robert Marko <robimarko@gmail.com>
2018-10-20 16:13:39 +02:00
Mathias Kresin
80c61c161a treewide: use wpad-basic for not small flash targets
Add out of the box support for 802.11r and 802.11w to all targets not
suffering from small flash.

Signed-off-by: Mathias Kresin <dev@kresin.me>

Mathias did all the heavy lifting on this, but I'm the one who should
get shouted at for committing.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
2018-10-16 15:07:41 +01:00
Felix Fietkau
d251a11f60 ramips: refresh mt7621 kernel config
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-10-15 12:54:12 +02:00
Koen Vandeputte
f983956a8b kernel: bump 4.14 to 4.14.75
Refreshed all patches.

Compile-tested on: ar71xx, cns3xxx, imx6
Runtime-tested on: ar71xx, cns3xxx, imx6

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-10-10 14:45:11 +02:00
Mathias Kresin
b07b3ddaad ramips: don't hijack the status led
Don't hijack the status led to indicate the wireless state. If we don't
have a dedicated wireless led, it's as simply as the wireless status
can't be indicated.

Such a led misuse should be set by the user and not shipped by default.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-10-07 11:35:03 +02:00
Mathias Kresin
c074239c79 ramips: move status led unset to devicetree
Release the led used for boot status indication via devicetree instead
of setting a default off trigger in userspace.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-10-07 11:34:18 +02:00
Mathias Kresin
8f4dfadd5a ramips: add support for indicating the boot state using multiple leds
Use diag.sh version used for other targets supporting different leds
for the different boot states.

The existing led sequences should be the same as before.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-10-07 11:34:18 +02:00
Mathias Kresin
772b27c207 ramips: set F5D8235 v1 usb led trigger via devicetree
Assign the usbdev trigger via devicetree and drop the userspace
handling of the usb leds.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-10-07 11:34:18 +02:00
Mathias Kresin
04eab0a1c9 ramips: set rt2880 pci controller of_node
Set the PCI controller of_node such that PCI devices can be
instantiated via device tree.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-10-07 11:34:18 +02:00
Mathias Kresin
a58535771f ramips: set usb led trigger via devicetree
Assign the usbdev trigger via devicetree for all subtargets and drop
the userspace handling of the usb leds.

With the change all usb ports are triggering the usb led instead of
only usb 1.1 XOR usb 2.0 XOR usb 3.0 as it was before.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-10-07 11:34:18 +02:00
Koen Vandeputte
a2adeffffc kernel: bump 4.14 to 4.14.74
Refreshed all patches.

Fixes CVE:

- CVE-2018-7755

Compile-tested on: cns3xxx, imx6
Runtime-tested on: cns3xxx, imx6

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-10-04 16:15:03 +02:00
Steffen Förster
8480907e70 ramips: fix Archer C20 sysupgrade
The sysupgrade image failed the check due to the wrong string in the
supported devices. This patch provides the correct name by dropping the
SUPPORTED_DEVICES to use the default generated name.

Signed-off-by: Steffen Förster <steffen@chemnitz.freifunk.net>
[drop the SUPPORTED_DEVICES, the old name was never used in a release]
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-09-26 20:35:07 +02:00
Emil Muratov
8e6bc1a5be ramips: fix power LED DTB for wt3020
Since c134210 power LED is no longer lights after boot-up.
Reversing gpio polarity makes it work as it should be.

Signed-off-by: Emil Muratov <gpm@hotplug.ru>
2018-09-26 20:35:07 +02:00
Joseph C. Lehner
d6e39e7466 ramips: ex2700: actually remove kmod-mt76*
When building using the multiple devices option with per-device root
filesystem, only the meta package mt76 is omitted but not the
dependencies selected by the package.

Explicitly exclude all 3 mt76 packages, plus the metapackage.
Otherwise, these modules will be included in the build, wasting
a few hundred kilobytes.

Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>
[mention the root cause of the issue in the commit message]
Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-09-26 20:35:07 +02:00
Koen Vandeputte
0cda4af005 kernel: bump 4.14 to 4.14.70
Refreshed all patches.

Added new patch:
- 192-Revert-ubifs-xattr-Don-t-operate-on-deleted-inodes.patch

This fixes a bug introduced in upstream 4.14.68 which caused targets using
ubifs to produce file-system errors on boot, rendering them useless.

Compile-tested on: cns3xxx, imx6, x86_64
Runtime-tested on: cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-09-17 15:47:44 +02:00
Tobias Wolf
93bfafb8dc ramips: Fix early memory calculation for certain MIPS platforms
Kernel upstream commit 67a3ba25aa95 ("MIPS: Fix incorrect mem=X@Y handling") introduced a new issue for rt288x where "PHYS_OFFSET" is 0x0 but the calculated "ramstart" is not. As the prerequisite of custom memory map has been removed, this results in the full memory range of 0x0 - 0x8000000 to be marked as reserved
for this platform.

This patch adds the originally intended prerequisite again.

Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de>
2018-09-10 10:07:42 +02:00
Carlo Nel
6bbb220255 ramips: add support for TP-Link TL-MR3020 v3
TP-Link TL-MR3020 v3 is a pocket-size router based on MediaTek MT7628N.

This PR is based on the work of @meyergru[1], with his permission.

Specification:
- MediaTek MT7628N/N (575 Mhz)
- 64 MB of RAM
- 8 MB of FLASH
- 2T2R 2.4 GHz
- 1x 10/100 Mbps Ethernet

Flash instruction:

The only way to flash the image in TL-MR3020 v3 is to use
tftp recovery mode in U-Boot:

1. Configure PC with static IP 192.168.0.225/24 and tftp server.
2. Rename "openwrt-ramips-mt76x8-tplink_tl-mr3020-v3-squashfs-tftp-recovery.bin"
   to "tp_recovery.bin" and place it in tftp server directory.
3. Connect PC with the LAN port, press the reset button, power up
   the router and keep button pressed for around 6-7 seconds, until
   device starts downloading the file.
4. Router will download file from server, write it to flash and reboot.

[1] https://github.com/meyergru/lede-source/commits/TL-MR3020-V3

Signed-off-by: Carlo Nel <carlojnel@gmail.com>
2018-09-06 21:36:42 +02:00
Mathias Kresin
287b7aa583 ramips: drop obsolete sd card driver code
The pinmux for all SoCs using this driver is now set via the pinmux. It
makes this code obsolete.

Some of the code targeting the mt76x8 SoCs is still required. The sd
card pins share the pads with the EPHY. These pads need to be switched
to digital mode if the pins are used for sd cards.

The eMMC 8-bit mode has to be enabled via pinmux instead of a kernel
option. The uart2 group need to be set to function "sdxc d5 d4", pwm1
to "sdxc d6" and pwm0 to "sdxc d7" to do so. It can't be done by as
part of a default pinmux, as it would break the normal operation of
uart2.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-09-06 21:35:53 +02:00
Mathias Kresin
563a5b5f94 ramips: add mt7620/1 sdhci pinmux
Set the pins to the required mode via the pinmux driver. It allows to
get rid of the pinmux related code in the sd card driver.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-09-06 21:35:53 +02:00
Mathias Kresin
a14097e8e0 ramips: fix mt7620a ND/SD pins pinmuxes
Drop the nd_sd gpio pinmux in case sdcard is used. They're mutually
exclusive and for most of the boards not even used as GPIOs.

If the pins are in sdcard mode, the pins ND_WE_N and ND_CS_N are still
GPIOs (#45 and #46).

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-09-06 21:35:53 +02:00
Mathias Kresin
2cc7980dcb ramips: reference node by label
Reference the HC5661A sdhci node by label instead of by the full path.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-09-06 21:35:53 +02:00
Mathias Kresin
1d08951628 ramips: add rt3352 SPI_CS1 pinmux
The rt3352 has a pin that can be used as second spi chip select,
watchdog reset or GPIO. The pinmux setup was missing the definition of
said pin but it is already used in the SoC dtsi.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-09-06 21:35:53 +02:00
Felix Fietkau
b605a84a74 ramips: ethernet: unify tx descriptor buffer splitting
A buffer is split into multiple descriptors if it exceeds 16 KB.
Apply the same split for the skb head as well (to deal with corner cases
on fraglist support)

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-09-03 12:06:24 +02:00
Jo-Philipp Wich
4302c917cc Revert "ramips: mmc: Fix init for MT7628AN"
This reverts commit 3a8efaef00.

The change reportedly breaks UART2 on some boards. Furthermore it uses
bitwise logic on an uninitialized variable and fails to explain what it
is fixing exactly.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2018-08-30 13:19:26 +02:00
Jo-Philipp Wich
77e2bccde8 ramips: only limit lzma dictionary size on mt7621
The changed dictionary size leads to a different LZMA header which breaks
sysupgrade image magic checkibng on at least some RT288x boards.

Since the commit message only mentions testing on MT7621 and since the
change appears to break at least one other ramips subtarget, do not take
any chances and restrict the size limitation to only MT7621.

Fixes FS#1797
Fixes 09b6755946 ("ramips: limit dictionary size for lzma compression")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2018-08-30 10:57:35 +02:00
Mathias Kresin
a6e11ccb13 ramips: fix rt3883 pinmux for second SPI
The rt3883 doesn't have a pinmux group named spi_cs1. The cs1 is part
of the pci group. The function pci-func enables the second chip select.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 21:00:58 +02:00
Mathias Kresin
dcdc6d9dad ramips: fix rt3883 pci pinmux
The PCI pins need to be set to "PCI Host support one device" to allow
the use of one PCI device and flash memory.

The pci-fnc function is intended to be used if no PCI is used but
flash, nand or the codec functionality is.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 21:00:58 +02:00
Mathias Kresin
c134210b8f ramips: drop pointless default led definitions
The LEDs should be triggered/lit by any kind of state change instead of
turned on/off unconditional.

If LEDs really need to be turned off by default, it should be done via
the default-state devicetree led property.

The handling of the wndr3700v5 and wt3020 power led is at least
strange. Something is for sure wrong with them. Either the leds are
misnamed, the default off trigger is a typo or the polarity of the
gpios is wrong. Drop the power led from userspace and wait for someone
with access to the hardware to fix it properly.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 09:39:32 +02:00
Mathias Kresin
43df31f64d ramips: add missing zbt-cpe102 diag led
Based on the userspace led configuration it's quite obvious that the
4g-0 led should be used for boot status indication.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 09:34:09 +02:00
Mathias Kresin
99045dfc59 ramips: express diag led handling via devicetree
Use the default-state property to express the desired led handling in
the devicetree source file instead of the userspace.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 09:34:07 +02:00
Mathias Kresin
111907e8d3 ramips: remove default on userspace trigger for diag leds
All the LEDs are turned on by diag.sh at the end of the boot process.
No need to do the same via userspace configuration again.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 09:26:24 +02:00
Mathias Kresin
56e6ebdea4 ramips: fix multi colour led handling
All boards either have a multi colour led or a single lightpipe. It
makes it impossible to handle the LEDs individual. Change the LED
config for these boards to take it into account.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 09:24:49 +02:00
Mathias Kresin
fe1e90deb4 ramips: rt-n12p: use the boardname helper variable
Use the helper variable for the Asus RT-N12P as it is done by all
boards.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-29 09:23:11 +02:00
Koen Vandeputte
01793e8752 kernel: bump 4.14 to 4.14.67
Refreshed all patches.

Removed upstreamed patches:
- 037-v4.18-0008-ARM-dts-BCM5301x-Fix-i2c-controller-interrupt-type.patch

Compile-tested on: cns3xxx, imx6
Runtime-tested on: cns3xxx, imx6

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-08-28 23:05:39 +02:00
Paul Wassi
e348ccc4e6 treewide: fix some cosmetic glitches in dts files
- fix single spaces hidden by a tab
- replace indentation with spaces by tabs
- make empty lines empty
- drop trailing whitespace
- drop unnecessary blank lines

Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Paul Wassi <p.wassi@gmx.at>
2018-08-27 19:31:17 +02:00
Mathias Kresin
3601c3de23 ramips: fix mt7620 pinmux for second SPI
The mt7620 doesn't have a pinmux group named spi_cs1. The cs1 is part
of the "spi refclk" group. The function "spi refclk" enables the second
chip select.

On reset, the pins of the "spi refclk" group are used as reference
clock and GPIO.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-27 19:31:17 +02:00
Thibaut VARÈNE
bbe2cf657c ramips: fix RBM11G partitioning
This patch improves faf64056dd by correcting
the partition scheme for the "RouterBoot" section of the flash.

The partition scheme initially submitted is incorrect and does not reflect
the actual flash structure.

The "RouterBoot" section (name matching OEM) is subdivided in several
static segments, as they are on ar71xx RB devices albeit with different
offsets and sizes.
The naming convention from ar71xx has been preserved, except for the
bootloaders which are named "bootloader1" and "bootloader2" to avoid
confusion with the master "RouterBoot" partition.
The preferred 'fixed-partitions' DTS node syntax is used, with nesting
support as introduced in 2a598bbaa3.
"partition" is used for node names, with associated "label" to match
policy set by 6dd94c2781.

Leave a note in DTS to explain how the original author selected the SPI speed.

Tested-by: Tobias Schramm <tobleminer@gmail.com>
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Reviewed-by: Rafał Miłecki <rafal@milecki.pl>
2018-08-24 11:53:51 +02:00
Thibaut VARÈNE
b90cad2c2e ramips: fix RBM33G partitioning
This patch improves 5684d08741 by correcting
the partition scheme for the "RouterBoot" section of the flash.

The partition scheme initially submitted is incorrect and does not reflect
the actual flash structure.

The "RouterBoot" section (name matching OEM) is subdivided in several
static segments, as they are on ar71xx RB devices albeit with different
offsets and sizes.
The naming convention from ar71xx has been preserved, except for the
bootloaders which are named "bootloader1" and "bootloader2" to avoid
confusion with the master "RouterBoot" partition.
The preferred 'fixed-partitions' DTS node syntax is used, with nesting
support as introduced in 2a598bbaa3.
"partition" is used for node names, with associated "label" to match
policy set by 6dd94c2781.

The OEM source code also define a "RouterBootFake" partition at the
beginning of the secondary flash chip: to avoid trouble if OEM ever makes
use of that space, it is also defined here.

The resulting partition scheme looks like this:
[   10.114241] m25p80 spi0.0: w25x40 (512 Kbytes)
[   10.118708] 1 fixed-partitions partitions found on MTD device spi0.0
[   10.125049] Creating 1 MTD partitions on "spi0.0":
[   10.129824] 0x000000000000-0x000000040000 : "RouterBoot"
[   10.136215] 5 fixed-partitions partitions found on MTD device RouterBoot
[   10.142894] Creating 5 MTD partitions on "RouterBoot":
[   10.148032] 0x000000000000-0x00000000f000 : "bootloader1"
[   10.154336] 0x00000000f000-0x000000010000 : "hard_config"
[   10.160665] 0x000000010000-0x00000001f000 : "bootloader2"
[   10.167046] 0x000000020000-0x000000021000 : "soft_config"
[   10.173461] 0x000000030000-0x000000031000 : "bios"
[   10.190191] m25p80 spi0.1: w25q128 (16384 Kbytes)
[   10.194950] 2 fixed-partitions partitions found on MTD device spi0.1
[   10.201271] Creating 2 MTD partitions on "spi0.1":
[   10.206071] 0x000000000000-0x000000040000 : "RouterBootFake"
[   10.212746] 0x000000040000-0x000001000000 : "firmware"
[   10.307216] 2 minor-fw partitions found on MTD device firmware
[   10.313044] 0x000000040000-0x000000220000 : "kernel"
[   10.319002] 0x000000220000-0x000001000000 : "rootfs"
[   10.324906] mtd: device 9 (rootfs) set to be root filesystem
[   10.330678] 1 squashfs-split partitions found on MTD device rootfs
[   10.336886] 0x000000b40000-0x000001000000 : "rootfs_data"

Leave a note in DTS to explain how the original author selected the SPI speed.

Tested-by: Tobias Schramm <tobleminer@gmail.com>
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Reviewed-by: Rafał Miłecki <rafal@milecki.pl>
[rmilecki: dropped "RouterBootFake" partition]
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-08-24 11:46:48 +02:00
Roger Pueyo Centelles
524c17d865 ramips: mt7620: add dir-810l network config
The device was not included in the /etc/board.d/02_network file, so
the network wouldn't be properly set up on boot.

Signed-off-by: Roger Pueyo Centelles <roger.pueyo@guifi.net>
2018-08-23 22:42:15 +02:00
NOGUCHI Hiroshi
ad10e71bec ramips: add support for ELECOM WRC-1900GST
ELECOM WRC-1900GST is a wireless router, based on Mediatek MT7621A.
This is almost same as WRC-2533GST except wireless specs.

Specifications:

  - SoC : MT7621A (four logical CPU cores)
  - RAM : 128MiB
  - ROM : 16MiB of SPI NOR-FLASH
  - wireless :
          5GHz : 3T3R up to 1300Mbps/11ac with MT7615
          2.4GHz : 3T3R up to 600Mbps/11n with MT7615
  - Ethernet : 5 ports, all ports is capable of 1000base-T
  - Ether switch : MT7530 (MT7621A built-in)
  - LEDs : 4 LEDs
  - buttons : 2 buttons and 1 slide-switch
  - UART : header is on PCB, 57600bps

Flash instruction using factory image:

 1. Connect the computer to the LAN port of WRC-1900GST
 2. Connect power cable to WRC-1900GST and turn on it
 3. Access to "https://192.168.2.1/" and open firmware update
    page ("ファームウェア更新")
 4. Select the OpenWrt factory image and click apply ("適用")
    button
 5. Wait ~150 seconds to complete flashing

Signed-off-by: NOGUCHI Hiroshi <drvlabo@gmail.com>
2018-08-23 22:42:09 +02:00
Mathias Kresin
b8996ea08a ramips: fix compatibles in SoC dtsi
The former used compatibles aren't defined anywhere and aren't used by
the devicetree source files including them.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-23 22:40:59 +02:00
Mathias Kresin
b88e03e2d4 ramips: fix GL-MT300N-V2 SoC compatible
According to abbfcc8525 ("ramips: add support for GL-inet
GL-MT300N-V2") the board has a MediaTek MT7628AN. Change the SoC
compatible to match the used hardware.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-23 22:40:59 +02:00
Mathias Kresin
28de86e816 ramips: drop not existing groups from pinmux
RT5350 neither have rgmii nor a mdio pinmux group. MT7628an doesn't
have a jtag group. Having these groups defined might cause a boot
panic.

The pin controller fails to initialise for kernels > 4.9 if invalid
groups are used. If a subsystem references a pin controller
configuration node, it can not find this node and errors out. In worst
case it's the SPI driver which errors out and we have no root
filesystem to mount.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-23 22:40:59 +02:00
Mathias Kresin
56b8ac1e86 treewide: consolidate upgrade state set
Set the (sys)upgrade state when sourcing the stage2 script instead of
setting the state for each target individual.

This change fixes the, due to a missing state set, not working upgrade
led on ath79 and apm821xx.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-16 21:20:57 +02:00
Mathias Kresin
1ea1f3a223 ramips: mt7620: fix bad indent
Fix the indent to make the make it obvious which condition is the
parent of the loop.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-08-16 21:20:57 +02:00