[PATCH 5/8] net: altera-tse: make ALTERA_TSE depend on HAS_IOMEM

[PATCH 5/8] net: altera-tse: make ALTERA_TSE depend on HAS_IOMEM

[Baoquan He]

On s390 systems (aka mainframes), it has classic channel devices for
networking and permanent storage that are currently even more common
than PCI devices. Hence it could have a fully functional s390 kernel
with CONFIG_PCI=n, then the relevant iomem mapping functions
[including ioremap(), devm_ioremap(), etc.] are not available.

Here let ALTERA_TSE depend on HAS_IOMEM so that it won't be built
to cause below compiling error if PCI is unset:

------
ERROR: modpost: "devm_ioremap" [drivers/net/ethernet/altera/altera_tse.ko] undefined!
------

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306211329.ticOJCSv-lkp@intel.com/
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Joyce Ooi <joyce.ooi@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org

---
 drivers/net/ethernet/altera/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/altera/Kconfig b/drivers/net/ethernet/altera/Kconfig
index 17985319088c..4ef819a9a1ad 100644
--- a/drivers/net/ethernet/altera/Kconfig
+++ b/drivers/net/ethernet/altera/Kconfig
@@ -2,6 +2,7 @@
 config ALTERA_TSE
 	tristate "Altera Triple-Speed Ethernet MAC support"
 	depends on HAS_DMA
+	depends on HAS_IOMEM
 	select PHYLIB
 	select PHYLINK
 	select PCS_LYNX
-- 
2.34.1

Re: [PATCH 5/8] net: altera-tse: make ALTERA_TSE depend on HAS_IOMEM

[Simon Horman]

On Fri, Jul 07, 2023 at 09:58:49PM +0800, Baoquan He wrote:
> On s390 systems (aka mainframes), it has classic channel devices for
> networking and permanent storage that are currently even more common
> than PCI devices. Hence it could have a fully functional s390 kernel
> with CONFIG_PCI=n, then the relevant iomem mapping functions
> [including ioremap(), devm_ioremap(), etc.] are not available.
> 
> Here let ALTERA_TSE depend on HAS_IOMEM so that it won't be built
> to cause below compiling error if PCI is unset:
> 
> ------
> ERROR: modpost: "devm_ioremap" [drivers/net/ethernet/altera/altera_tse.ko] undefined!
> ------
> 
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202306211329.ticOJCSv-lkp@intel.com/
> Signed-off-by: Baoquan He <bhe@redhat.com>


Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Simon Horman <simon.horman@corigine.com> # build-tested

I wonder if this should also have:

  Fixes: ed33ef648964 ("Altera TSE: Add Altera Ethernet Driver Makefile and Kconfig")

Re: [PATCH 5/8] net: altera-tse: make ALTERA_TSE depend on HAS_IOMEM

[Baoquan He]

On 07/11/23 at 06:17pm, Simon Horman wrote:
> On Fri, Jul 07, 2023 at 09:58:49PM +0800, Baoquan He wrote:
> > On s390 systems (aka mainframes), it has classic channel devices for
> > networking and permanent storage that are currently even more common
> > than PCI devices. Hence it could have a fully functional s390 kernel
> > with CONFIG_PCI=n, then the relevant iomem mapping functions
> > [including ioremap(), devm_ioremap(), etc.] are not available.
> > 
> > Here let ALTERA_TSE depend on HAS_IOMEM so that it won't be built
> > to cause below compiling error if PCI is unset:
> > 
> > ------
> > ERROR: modpost: "devm_ioremap" [drivers/net/ethernet/altera/altera_tse.ko] undefined!
> > ------
> > 
> > Reported-by: kernel test robot <lkp@intel.com>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202306211329.ticOJCSv-lkp@intel.com/
> > Signed-off-by: Baoquan He <bhe@redhat.com>
> 
> 
> Reviewed-by: Simon Horman <simon.horman@corigine.com>
> Tested-by: Simon Horman <simon.horman@corigine.com> # build-tested

Thanks, Simon.

> 
> I wonder if this should also have:
> 
>   Fixes: ed33ef648964 ("Altera TSE: Add Altera Ethernet Driver Makefile and Kconfig")

Agree, it's worth having Fixes tag.