fix: multiple definition of aes_encrypt

[Anoncheg1]

Error message:

  AR      drivers/built-in.a
  AR      built-in.a
  AR      vmlinux.a
  LD      vmlinux.o
ld: drivers/net/wireless/realtek/rtl8822b/core/crypto/aes-internal-enc.o: in function `aes_encrypt':
aes-internal-enc.c:(.text+0x80): multiple definition of `aes_encrypt'; lib/crypto/aes.o:aes.c:(.text+0x870): first defined here
ld: drivers/net/wireless/realtek/rtl8822b/core/crypto/aes-internal-enc.o: in function `__pfx_aes_encrypt':
aes-internal-enc.c:(.text+0x70): multiple definition of `__pfx_aes_encrypt'; lib/crypto/aes.o:aes.c:(.text+0x860): first defined here
make[2]: *** [scripts/Makefile.vmlinux_o:89: vmlinux.o] Error 1
make[1]: *** [/usr/src/linux-6.6.67-gentoo/Makefile:1148: vmlinux_o] Error 2
make: *** [Makefile:234: __sub-make] Error 2

I tested for Linux kernel 6.6.67-gentoo.

I used following script to install directly in kernel to "drivers/net/wireless/realtek/" path.

#!/bin/bash
RTL=rtl8822b # rtl8812au
FOLDERS=88x2bu-20210702

CONF_MOD=CONFIG_RTL8822BU

# mkdir -p "/lib/modules/$(uname -r)/build"
mkdir -p "/lib/modules/$(cat /usr/src/linux/include/config/kernel.release)/build" # gentoo way

# - remove folder in kernel
rm -r /usr/src/linux/drivers/net/wireless/realtek/${RTL} &> /dev/null
# - copy folder to kernel
cp -r /usr/local/src/${FOLDERS} /usr/src/linux/drivers/net/wireless/realtek/${RTL}
# - replace line in Makefile, we include in kernel
sed -i "s/export ${CONF_MOD} = m/export ${CONF_MOD} = y/" /usr/src/linux/drivers/net/wireless/realtek/${RTL}/Makefile

# - add line to uplevel Makefile to our folder
echo 'obj-$('${CONF_MOD}')		+= '"${RTL}/" >> /usr/src/linux/drivers/net/wireless/realtek/Makefile
# - create/restore .back for kernel config
if [ -e /usr/src/linux/drivers/net/wireless/realtek/Kconfig.back ] ; then
    cp /usr/src/linux/drivers/net/wireless/realtek/Kconfig.back /usr/src/linux/drivers/net/wireless/realtek/Kconfig
else
    cp /usr/src/linux/drivers/net/wireless/realtek/Kconfig /usr/src/linux/drivers/net/wireless/realtek/Kconfig.back
fi
# - add section to Kconfig with path to our Kconfig
head -n -1 /usr/src/linux/drivers/net/wireless/realtek/Kconfig > /tmp/Kconfig
echo "source \"drivers/net/wireless/realtek/${RTL}/Kconfig\"" >> /tmp/Kconfig
echo >> /tmp/Kconfig
echo 'endif # WLAN_VENDOR_REALTEK' >> /tmp/Kconfig
mv /tmp/Kconfig /usr/src/linux/drivers/net/wireless/realtek/Kconfig


# - remove rtw88
echo "" > /usr/src/linux/drivers/net/wireless/realtek/rtw88/Kconfig 
echo "" > /usr/src/linux/drivers/net/wireless/realtek/rtw88/Makefile

[morrownr]

Hi again @Anoncheg1

I see the work you have done. I am to the point that I am about to discontinue maintenance on this driver due to the work on rtw88 over the last year. rtw88 as of kernel 6.12 is in good shape and as of 6.14 should be excellent. We can use someone of your skills to help testing and working on the downstream rtw88 that we are using to upstream work to the kernel:

https://github.com/lwfinger/rtw88

I hope to see you there.