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rockchip: use alternative CID path

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Use an alternative path to access the CID of the SD card in MMC0, used
for the generation of MAC addresses. With Kernel 5.10, the device name
of the MMC controller changed, breaking MAC address generation.

The new path is compatible with Kernel 5.4 as well as Kernel 5.10.

Signed-off-by: David Bauer <mail@david-bauer.net>
Signed-off-by: maurerr <mariusd84@gmail.com>
This commit is contained in:
David Bauer 2021-04-17 20:32:57 +02:00 committed by maurerr
parent 06ceb32b7b
commit 320e9aa005
1 changed files with 1 additions and 1 deletions
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2
target/linux/rockchip/armv8/base-files/etc/board.d/02_network
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@ -18,7 +18,7 @@ rockchip_setup_interfaces()
nanopi_r2s_generate_mac()
{
local sd_hash=$(sha256sum /sys/devices/platform/ff500000.dwmmc/mmc_host/mmc0/mmc0:*/cid)
local sd_hash=$(sha256sum /sys/class/block/mmcblk0/device/cid)
local mac_base=$(macaddr_canonicalize "$(echo "${sd_hash}" | dd bs=1 count=12 2>/dev/null)")
echo "$(macaddr_unsetbit_mc "$(macaddr_setbit_la "${mac_base}")")"
}