Re: [PATCH] reset: meson: make it possible to build as a module

[Robin Murphy]

On 2020-10-13 14:39, Neil Armstrong wrote:
In order to reduce the kernel Image size on multi-platform distributions,
make it possible to build the reset controller driver as a module.
This partially reverts 8290924e ("reset: meson: make it explicitly non-modular")

Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
---
  drivers/reset/Kconfig       | 4 ++--
  drivers/reset/reset-meson.c | 7 ++++++-
  2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index d9efbfd29646..ab315617565f 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -94,8 +94,8 @@ config RESET_LPC18XX
          This enables the reset controller driver for NXP LPC18xx/43xx SoCs.
  
  config RESET_MESON
-       bool "Meson Reset Driver" if COMPILE_TEST
-       default ARCH_MESON
+       tristate "Meson Reset Driver"
+       default ARCH_MESON || COMPILE_TEST

How about an actual dependency like:

        depends on ARCH_MESON || COMPILE_TEST
        default ARCH_MESON
?

That way the option won't be presented to users where it's completely 
irrelevant, e.g. running "make oldconfig" with an x86 distro config. It 
always bugs me when I rebase a branch and have to manually confirm that 
indeed I don't want to build random drivers specific to x86/RISC-V/etc. 
SoCs for my arm64 config... ;)

Robin.

        help
          This enables the reset driver for Amlogic Meson SoCs.
  
diff --git a/drivers/reset/reset-meson.c b/drivers/reset/reset-meson.c
index 94d7ba88d7d2..434d5c0f877e 100644
--- a/drivers/reset/reset-meson.c
+++ b/drivers/reset/reset-meson.c
@@ -9,6 +9,7 @@
  #include <linux/init.h>
  #include <linux/io.h>
  #include <linux/of.h>
+#include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/reset-controller.h>
  #include <linux/slab.h>
@@ -142,4 +143,8 @@ static struct platform_driver meson_reset_driver = {
                .of_match_table = meson_reset_dt_ids,
        },
  };
-builtin_platform_driver(meson_reset_driver);
+module_platform_driver(meson_reset_driver);
+
+MODULE_DESCRIPTION("Amlogic Meson Reset Controller driver");
+MODULE_AUTHOR("Neil Armstrong <narmstr...@baylibre.com>");
+MODULE_LICENSE("Dual BSD/GPL");