Re: [PATCH] dma-buf: cma_heap: Include linux/vmalloc.h to fix build failures on MIPS

[Sumit Semwal]

Hi John,


On Wed, 16 Dec 2020 at 06:19, John Stultz <john.stultz@xxxxxxxxxx> wrote:
>
> We need to include <linux/vmalloc.h> in order for MIPS to find
> vmap(), as it doesn't otherwise get included there.
>
> Without this patch, one can hit the following build error:
>   drivers/dma-buf/heaps/cma_heap.c: In function 'cma_heap_do_vmap':
>   drivers/dma-buf/heaps/cma_heap.c:195:10: error: implicit declaration of function 'vmap'

Thanks for the patch; I've merged it to drm-misc-next-fixes.

>
> Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
> Cc: Liam Mark <lmark@xxxxxxxxxxxxxx>
> Cc: Laura Abbott <labbott@xxxxxxxxxx>
> Cc: Brian Starkey <Brian.Starkey@xxxxxxx>
> Cc: Hridya Valsaraju <hridya@xxxxxxxxxx>
> Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
> Cc: Sandeep Patil <sspatil@xxxxxxxxxx>
> Cc: Daniel Mentz <danielmentz@xxxxxxxxxx>
> Cc: Chris Goldsworthy <cgoldswo@xxxxxxxxxxxxxx>
> Cc: Ørjan Eide <orjan.eide@xxxxxxx>
> Cc: Robin Murphy <robin.murphy@xxxxxxx>
> Cc: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
> Cc: Simon Ser <contact@xxxxxxxxxxx>
> Cc: James Jones <jajones@xxxxxxxxxx>
> Cc: linux-media@xxxxxxxxxxxxxxx
> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Fixes: a5d2d29e24be ("dma-buf: heaps: Move heap-helper logic into the cma_heap implementation")
> Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
> ---
>  drivers/dma-buf/heaps/cma_heap.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/dma-buf/heaps/cma_heap.c b/drivers/dma-buf/heaps/cma_heap.c
> index 5e7c3436310c..3c4e34301172 100644
> --- a/drivers/dma-buf/heaps/cma_heap.c
> +++ b/drivers/dma-buf/heaps/cma_heap.c
> @@ -20,6 +20,7 @@
>  #include <linux/module.h>
>  #include <linux/scatterlist.h>
>  #include <linux/slab.h>
> +#include <linux/vmalloc.h>
>
>
>  struct cma_heap {
> --
> 2.17.1
>
Best,
Sumit.