linux-kernel - Re: ERROR: modpost: "sba_list" [drivers/char/agp/parisc-agp.ko] undefined!

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Date:   Tue, 6 Apr 2021 11:43:27 +0200
From:   Helge Deller <deller@....de>
To:     kernel test robot <lkp@...el.com>, linux-parisc@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: ERROR: modpost: "sba_list" [drivers/char/agp/parisc-agp.ko]
 undefined!

* kernel test robot <lkp@...el.com>:
> Hi Helge,
>
> First bad commit (maybe != root cause):
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   0a50438c84363bd37fe18fe432888ae9a074dcab
> commit: 00e35f2b0e8acb88d4e1aa96ff0490e3bfe46580 parisc: Enable -mlong-calls gcc option by default when !CONFIG_MODULES
> date:   10 weeks ago
> config: parisc-randconfig-r035-20210406 (attached as .config)
> compiler: hppa64-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=00e35f2b0e8acb88d4e1aa96ff0490e3bfe46580
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 00e35f2b0e8acb88d4e1aa96ff0490e3bfe46580
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
>
> All errors (new ones prefixed by >>, old ones prefixed by <<):
>
> >> ERROR: modpost: "sba_list" [drivers/char/agp/parisc-agp.ko] undefined!

The following patch should fix it.
I'll apply it to the parisc for-next git tree.

Thanks!
Helge

-

From: Helge Deller <deller@....de>
Date: Tue, 6 Apr 2021 11:32:52 +0200
Subject: [PATCH] parisc: parisc-agp requires SBA IOMMU driver

Add a dependency to the SBA IOMMU driver to avoid:
ERROR: modpost: "sba_list" [drivers/char/agp/parisc-agp.ko] undefined!

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Helge Deller <deller@....de>

diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index a086dd34f932..4f501e4842ab 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -125,7 +125,7 @@ config AGP_HP_ZX1

 config AGP_PARISC
 	tristate "HP Quicksilver AGP support"
-	depends on AGP && PARISC && 64BIT
+	depends on AGP && PARISC && 64BIT && IOMMU_SBA
 	help
 	  This option gives you AGP GART support for the HP Quicksilver
 	  AGP bus adapter on HP PA-RISC machines (Ok, just on the C8000