Re: [PATCH] mailbox, remoteproc: omap2+: fix compile testing

Mathieu Poirier
2024-09-10T14:59:38Z

On Mon, Sep 09, 2024 at 08:38:09PM +0000, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> Selecting CONFIG_OMAP2PLUS_MBOX while compile testing
> causes a build failure:
>
> WARNING: unmet direct dependencies detected for OMAP2PLUS_MBOX
> Depends on [n]: MAILBOX [=y] && (ARCH_OMAP2PLUS || ARCH_K3)
> Selected by [m]:
> - TI_K3_M4_REMOTEPROC [=m] && REMOTEPROC [=y] && (ARCH_K3 || COMPILE_TEST [=y])
>
> Using 'select' to force-enable another subsystem is generally
> a mistake and causes problems such as this one, so change the
> three drivers that link against this driver to use 'depends on'
> instead, and ensure the driver itself can be compile tested
> regardless of the platform.
>
> When compile-testing without CONFIG_TI_SCI_PROTOCOL=m, there
> is a chance for a link failure, so add a careful dependency
> on that.
>
> arm-linux-gnueabi-ld: drivers/remoteproc/ti_k3_m4_remoteproc.o: in function `k3_m4_rproc_probe':
> ti_k3_m4_remoteproc.c:(.text.k3_m4_rproc_probe+0x76): undefined reference to `devm_ti_sci_get_by_phandle'
>
> Fixes: ebcf9008a895 ("remoteproc: k3-m4: Add a remoteproc driver for M4F subsystem")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/mailbox/Kconfig | 2 +-
> drivers/mailbox/omap-mailbox.c | 2 +-
> drivers/remoteproc/Kconfig | 10 ++++------

For the remoteproc part:

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

> 3 files changed, 6 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
> index 4eed97295927..ecaf78beb934 100644
> --- a/drivers/mailbox/Kconfig
> +++ b/drivers/mailbox/Kconfig
> @@ -73,7 +73,7 @@ config ARMADA_37XX_RWTM_MBOX
>
> config OMAP2PLUS_MBOX
> tristate "OMAP2+ Mailbox framework support"
> - depends on ARCH_OMAP2PLUS || ARCH_K3
> + depends on ARCH_OMAP2PLUS || ARCH_K3 || COMPILE_TEST
> help
> Mailbox implementation for OMAP family chips with hardware for
> interprocessor communication involving DSP, IVA1.0 and IVA2 in
> diff --git a/drivers/mailbox/omap-mailbox.c b/drivers/mailbox/omap-mailbox.c
> index 7a87424657a1..6797770474a5 100644
> --- a/drivers/mailbox/omap-mailbox.c
> +++ b/drivers/mailbox/omap-mailbox.c
> @@ -603,7 +603,7 @@ static struct platform_driver omap_mbox_driver = {
> .driver = {
> .name = "omap-mailbox",
> .pm = &omap_mbox_pm_ops,
> - .of_match_table = of_match_ptr(omap_mailbox_of_match),
> + .of_match_table = omap_mailbox_of_match,
> },
> };
> module_platform_driver(omap_mbox_driver);
> diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
> index 0f0862e20a93..62f8548fb46a 100644
> --- a/drivers/remoteproc/Kconfig
> +++ b/drivers/remoteproc/Kconfig
> @@ -330,8 +330,7 @@ config STM32_RPROC
> config TI_K3_DSP_REMOTEPROC
> tristate "TI K3 DSP remoteproc support"
> depends on ARCH_K3
> - select MAILBOX
> - select OMAP2PLUS_MBOX
> + depends on OMAP2PLUS_MBOX
> help
> Say m here to support TI's C66x and C71x DSP remote processor
> subsystems on various TI K3 family of SoCs through the remote
> @@ -343,8 +342,8 @@ config TI_K3_DSP_REMOTEPROC
> config TI_K3_M4_REMOTEPROC
> tristate "TI K3 M4 remoteproc support"
> depends on ARCH_K3 || COMPILE_TEST
> - select MAILBOX
> - select OMAP2PLUS_MBOX
> + depends on TI_SCI_PROTOCOL || (COMPILE_TEST && TI_SCI_PROTOCOL=n)
> + depends on OMAP2PLUS_MBOX
> help
> Say m here to support TI's M4 remote processor subsystems
> on various TI K3 family of SoCs through the remote processor
> @@ -356,8 +355,7 @@ config TI_K3_M4_REMOTEPROC
> config TI_K3_R5_REMOTEPROC
> tristate "TI K3 R5 remoteproc support"
> depends on ARCH_K3
> - select MAILBOX
> - select OMAP2PLUS_MBOX
> + depends on OMAP2PLUS_MBOX
> help
> Say m here to support TI's R5F remote processor subsystems
> on various TI K3 family of SoCs through the remote processor
> --
> 2.39.2
>