wifi: ath12k: fix QCOM_RPROC_COMMON dependency

From: Arnd Bergmann <[email protected]>

The AHB driver depends on the remoteproc interface, which could be in a loadable module when ath12k itself is built-in:

arm-linux-gnueabi-ld: drivers/net/wireless/ath/ath12k/ahb.o: in function `ath12k_ahb_probe':
ahb.c:(.text+0xb2c): undefined reference to `qcom_register_ssr_notifier'
arm-linux-gnueabi-ld: ahb.c:(.text+0x1000): undefined reference to `qcom_unregister_ssr_notifier'
arm-linux-gnueabi-ld: drivers/net/wireless/ath/ath12k/ahb.o: in function `ath12k_ahb_remove':
ahb.c:(.text+0x1146): undefined reference to `qcom_unregister_ssr_notifier'

Add a dependency to only allow the AHB portion to be enabled if either remoteproc support is built-in or ath12k is itself a loadable module.

A better way to fix this would be to make the driver more modular and ensure the AHB and PCI components are built into separate loadable modules like it is done for the ATH10K driver, but that is a much larger rework that someone else can do in the future.

---
 drivers/net/wireless/ath/ath12k/Kconfig | 1 +
 1 file changed, 1 insertion(+)

index 0d5d1c55bfc1..4e8a301f2081 100644
@@ -17,6 +17,7 @@ config ATH12K
 config ATH12K_AHB
 	bool "Qualcomm ath12k AHB support"
 	depends on ATH12K && REMOTEPROC
+	depends on QCOM_RPROC_COMMON=y || ATH12K=m
 	select QCOM_MDT_LOADER
 	select QCOM_PAS
 	help

2.53.0

From: Arnd Bergmann <[email protected]>

The platform_device_msi_init_and_alloc_irqs() interface can be disabled based on the configuration, though it is usually enabled. Without it, the driver now fails to build:

drivers/net/wireless/ath/ath12k/pcic.c: In function 'ath12k_pcic_config_irq':
drivers/net/wireless/ath/ath12k/pcic.c:387:15: error: implicit declaration of function 'platform_device_msi_init_and_alloc_irqs' [-Wimplicit-function-declaration]
387 | ret = platform_device_msi_init_and_alloc_irqs(&pdev->dev,

      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/ath/ath12k/pcic.c:424:9: error: implicit declaration of function 'platform_device_msi_free_irqs_all' [-Wimplicit-function-declaration]
  424 |         platform_device_msi_free_irqs_all(&pdev->dev);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Add a Kconfig dependency for it.

---
Note that this patch applied cleanly on top of another Kconfig fix that I sent a while ago that is also still required, see
https://lore.kernel.org/all/[email protected]/

---
 drivers/net/wireless/ath/ath12k/Kconfig | 1 +
 1 file changed, 1 insertion(+)

index 4e8a301f2081..ed93ff36fbe2 100644
@@ -18,6 +18,7 @@ config ATH12K_AHB
 	bool "Qualcomm ath12k AHB support"
 	depends on ATH12K && REMOTEPROC
 	depends on QCOM_RPROC_COMMON=y || ATH12K=m
+	depends on GENERIC_MSI_IRQ
 	select QCOM_MDT_LOADER
 	select QCOM_PAS
 	help

2.53.0