Re: [PATCH v4 0/3] soc: qcom: ubwc: Fix link error

On Fri, Aug 14, 2026 at 09:42:52AM +0300, Daniel Baluta wrote:
> On 8/14/26 02:23, Nathan Chancellor wrote:
> >   In file included from drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp_v13.c:7:
> >   include/linux/soc/qcom/ubwc.h: In function 'qcom_ubwc_config_get_data':
> >   include/linux/soc/qcom/ubwc.h:45:16: error: implicit declaration of function 'ERR_PTR' [-Wimplicit-function-declaration]
> >      45 |         return ERR_PTR(-EOPNOTSUPP);
> >         |                ^~~~~~~
> >   include/linux/soc/qcom/ubwc.h:45:25: error: 'EOPNOTSUPP' undeclared (first use in this function)
> 
> Hi Nathan,
> 
> This issue is pre-existing and I've sent a separate fix for it:
> 
> https://lore.kernel.org/all/5fy7l6o5nfzclsmhsqys562xwoilbo4xv3af65kcqugtitgltd@3fw2w443pw2g/#r

Sure, it is a pre-existing issue but it is only exposed by making
CONFIG_QCOM_UBWC_CONFIG an optional selection for these drivers, so I
think that patch should be a part of this series. Otherwise, I don't see
how you could actually trigger such an error.

-- 
Cheers,
Nathan