| From 0e557c34b8f745628b728c69ddd34c62c4c682d4 Mon Sep 17 00:00:00 2001 |
| From: Jason Gunthorpe <jgg@mellanox.com> |
| Date: Mon, 28 Oct 2019 17:10:25 -0300 |
| Subject: [PATCH] xen/gntdev: Use select for DMA_SHARED_BUFFER |
| |
| commit fa6614d8ef13c63aac52ad7c07c5e69ce4aba3dd upstream. |
| |
| DMA_SHARED_BUFFER can not be enabled by the user (it represents a library |
| set in the kernel). The kconfig convention is to use select for such |
| symbols so they are turned on implicitly when the user enables a kconfig |
| that needs them. |
| |
| Otherwise the XEN_GNTDEV_DMABUF kconfig is overly difficult to enable. |
| |
| Fixes: 932d6562179e ("xen/gntdev: Add initial support for dma-buf UAPI") |
| Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> |
| Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> |
| Cc: xen-devel@lists.xenproject.org |
| Cc: Juergen Gross <jgross@suse.com> |
| Cc: Stefano Stabellini <sstabellini@kernel.org> |
| Reviewed-by: Juergen Gross <jgross@suse.com> |
| Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> |
| Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> |
| Signed-off-by: Juergen Gross <jgross@suse.com> |
| Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig |
| index ec6558b79e9d..bd495e2b1a9e 100644 |
| --- a/drivers/xen/Kconfig |
| +++ b/drivers/xen/Kconfig |
| @@ -156,7 +156,8 @@ config XEN_GNTDEV |
| |
| config XEN_GNTDEV_DMABUF |
| bool "Add support for dma-buf grant access device driver extension" |
| - depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC && DMA_SHARED_BUFFER |
| + depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC |
| + select DMA_SHARED_BUFFER |
| help |
| Allows userspace processes and kernel modules to use Xen backed |
| dma-buf implementation. With this extension grant references to |
| -- |
| 2.7.4 |
| |
