accel: fix CONFIG_DRM dependencies

At the moment, accel drivers can be built-in even with CONFIG_DRM=m,
but this causes a link failure:

x86_64-linux-ld: drivers/accel/ivpu/ivpu_drv.o: in function `ivpu_dev_init':
ivpu_drv.c:(.text+0x1535): undefined reference to `drmm_kmalloc'
x86_64-linux-ld: ivpu_drv.c:(.text+0x1562): undefined reference to `drmm_kmalloc'
x86_64-linux-ld: drivers/accel/ivpu/ivpu_drv.o: in function `ivpu_remove':
ivpu_drv.c:(.text+0x1faa): undefined reference to `drm_dev_unregister'
x86_64-linux-ld: drivers/accel/ivpu/ivpu_drv.o: in function `ivpu_probe':
ivpu_drv.c:(.text+0x1fef): undefined reference to `__devm_drm_dev_alloc'

The problem is that DRM_ACCEL is a 'bool' symbol, so driver that
only depend on DRM_ACCEL but not also on DRM do not see the restriction
to =m configs.

To ensure that each accel driver has an implied dependency on CONFIG_DRM,
enclose the entire Kconfig file in an if/endif check.

Fixes: 8bf4889762a8 ("drivers/accel: define kconfig and register a new major")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230127221504.2522909-1-arnd@kernel.org

diff --git a/drivers/accel/Kconfig b/drivers/accel/Kconfig
index 4989376..2d88f2a 100644 (file)
--- a/drivers/accel/Kconfig
+++ b/drivers/accel/Kconfig
@@ -6,9 +6,10 @@
 # as, but not limited to, Machine-Learning and Deep-Learning acceleration
 # devices
 #
+if DRM
+
 menuconfig DRM_ACCEL
        bool "Compute Acceleration Framework"
-       depends on DRM
        help
          Framework for device drivers of compute acceleration devices, such
          as, but not limited to, Machine-Learning and Deep-Learning
@@ -24,3 +25,5 @@ menuconfig DRM_ACCEL
          and debugfs).
 
 source "drivers/accel/ivpu/Kconfig"
+
+endif