aic8800_sdio: driver never builds — Makefile references undefined CONFIG_SPARD_WLAN_SUPPORT

[medemi68]

The aic8800_sdio WiFi driver cannot be built through normal kernel configuration. drivers/net/wireless/Makefile gates the directory with CONFIG_SPARD_WLAN_SUPPORT, but this symbol is not defined in any Kconfig file. The kernel build system silently strips undefined symbols from .config, so even if manually added via a fragment, it gets removed before compilation.

The driver's own Kconfig (drivers/net/wireless/aic8800_sdio/Kconfig) defines CONFIG_AIC_WLAN_SUPPORT as the top-level gate, and drivers/net/wireless/Kconfig correctly sources the aic8800_sdio Kconfig. The fix is to change the Makefile reference to match:

--- a/drivers/net/wireless/Makefile
+++ b/drivers/net/wireless/Makefile
@@ -4,7 +4,7 @@

 obj-$(CONFIG_WLAN_VENDOR_ADMTEK) += admtek/
-obj-$(CONFIG_SPARD_WLAN_SUPPORT) += aic8800_sdio/
+obj-$(CONFIG_AIC_WLAN_SUPPORT) += aic8800_sdio/
 obj-$(CONFIG_WLAN_VENDOR_ATH) += ath/
 obj-$(CONFIG_WLAN_VENDOR_ATMEL) += atmel/
 obj-$(CONFIG_WLAN_VENDOR_BROADCOM) += broadcom/

Affects branch rk-6.1-rkr6.1. I don't have the time to make a PR at the moment. But hopefully this helps someone else.

[amazingfate]

would dkms package from radxa work so we can get rid of the aic driver in the kernel tree?
https://github.com/radxa-pkg/aic8800/

[medemi68]

On the contrary I prefer it in the kernel tree. With this simple patch its much easier to compile rather than having to separately compile a dkms package. I can confirm it works.