Re: [PATCH] drm: msm: fix building without CONFIG_COMMON_CLK

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Am 18.10.21 um 13:38 schrieb Geert Uytterhoeven:
Hi Christian,

On Mon, Oct 18, 2021 at 1:37 PM Christian König
<christian.koenig@xxxxxxx> wrote:
Am 13.10.21 um 16:42 schrieb Arnd Bergmann:
From: Arnd Bergmann <arnd@xxxxxxxx>

When CONFIG_COMMON_CLOCK is disabled, the 8996 specific
phy code is left out, which results in a link failure:

ld: drivers/gpu/drm/msm/hdmi/hdmi_phy.o:(.rodata+0x3f0): undefined reference to `msm_hdmi_phy_8996_cfg'

This was only exposed after it became possible to build
test the driver without the clock interfaces.

Make COMMON_CLK a hard dependency for compile testing,
and simplify it a little based on that.

Fixes: b3ed524f84f5 ("drm/msm: allow compile_test on !ARM")
Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Suggested-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
   drivers/gpu/drm/msm/Kconfig  | 2 +-
   drivers/gpu/drm/msm/Makefile | 6 +++---
   2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index f5107b6ded7b..cb204912e0f4 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -4,8 +4,8 @@ config DRM_MSM
       tristate "MSM DRM"
       depends on DRM
       depends on ARCH_QCOM || SOC_IMX5 || COMPILE_TEST
+     depends on COMMON_CLK
       depends on IOMMU_SUPPORT
We also need a "depends on MMU" here because some automated test is now
trying to compile the driver on parisc as well.

I have absolutely no idea how a platform can have IOMMU but no MMU
support but it indeed seems to be the case here.
Huh?

Parisc has config MMU def_bool y?

Then why vmap isn't available?

See the mail thread: [linux-next:master 3576/7806] drivers/gpu/drm/msm/msm_gem.c:624:20: error: implicit declaration of function 'vmap'

Thanks for taking a look into this,
Christian.


Gr{oetje,eeting}s,

                         Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                 -- Linus Torvalds




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