diff mbox series

firmware_loader: move CONFIG_FW_LOADER_USER_HELPER switch to Makefile

Message ID 1545664497-26740-1-git-send-email-yamada.masahiro@socionext.com
State Superseded
Headers show
Series firmware_loader: move CONFIG_FW_LOADER_USER_HELPER switch to Makefile | expand

Commit Message

Masahiro Yamada Dec. 24, 2018, 3:14 p.m. UTC
The whole code of fallback_table.c is surrounded by #ifdef of
CONFIG_FW_LOADER_USER_HELPER.

Move the CONFIG_FW_LOADER_USER_HELPER switch to Makefile so that
it is not compiled at all when this CONFIG is turned off.

I also removed the confusing comment, "Module or buit-in [sic]".
CONFIG_FW_LOADER_USER_HELPER is a boolean option.
(If it were a module, CONFIG_FW_LOADER_USER_HELPER_MODULE would
be defined instead.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

---

 drivers/base/firmware_loader/Makefile         | 2 +-
 drivers/base/firmware_loader/fallback_table.c | 5 -----
 2 files changed, 1 insertion(+), 6 deletions(-)

-- 
2.7.4

Comments

Luis Chamberlain Feb. 5, 2019, 12:27 a.m. UTC | #1
On Tue, Dec 25, 2018 at 12:14:57AM +0900, Masahiro Yamada wrote:
> The whole code of fallback_table.c is surrounded by #ifdef of

> CONFIG_FW_LOADER_USER_HELPER.

> 

> Move the CONFIG_FW_LOADER_USER_HELPER switch to Makefile so that

> it is not compiled at all when this CONFIG is turned off.

> 

> I also removed the confusing comment, "Module or buit-in [sic]".

> CONFIG_FW_LOADER_USER_HELPER is a boolean option.

> (If it were a module, CONFIG_FW_LOADER_USER_HELPER_MODULE would

> be defined instead.)

> 

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

> ---

> 

>  drivers/base/firmware_loader/Makefile         | 2 +-

>  drivers/base/firmware_loader/fallback_table.c | 5 -----

>  2 files changed, 1 insertion(+), 6 deletions(-)

> 

> diff --git a/drivers/base/firmware_loader/Makefile b/drivers/base/firmware_loader/Makefile

> index a97eeb0..5c7f422 100644

> --- a/drivers/base/firmware_loader/Makefile

> +++ b/drivers/base/firmware_loader/Makefile

> @@ -1,7 +1,7 @@

>  # SPDX-License-Identifier: GPL-2.0

>  # Makefile for the Linux firmware loader

>  

> -obj-y			:= fallback_table.o

> +obj-$(CONFIG_FW_LOADER_USER_HELPER) += fallback_table.o


Phew ... CONFIG_FW_LOADER_USER_HELPER is bool.

So no new modules. You had me scared for a bit.

The reason this was built-in was that we *need* this table for built-in
code which *can* request firmware *pre* module loading. The table thing
was designed to be built-in if the firmware interface was enabled in
any way.

Fortunately I don't see this regressing as CONFIG_FW_LOADER_USER_HELPER
is a bool. It is hard to enforce other than with careful review.

>  obj-$(CONFIG_FW_LOADER)	+= firmware_class.o

>  firmware_class-objs := main.o

>  firmware_class-$(CONFIG_FW_LOADER_USER_HELPER) += fallback.o

> diff --git a/drivers/base/firmware_loader/fallback_table.c b/drivers/base/firmware_loader/fallback_table.c

> index 7428659..776dd69 100644

> --- a/drivers/base/firmware_loader/fallback_table.c

> +++ b/drivers/base/firmware_loader/fallback_table.c

> @@ -16,9 +16,6 @@

>   * firmware fallback configuration table

>   */

>  

> -/* Module or buit-in */

> -#ifdef CONFIG_FW_LOADER_USER_HELPER

> -

>  static unsigned int zero;

>  static unsigned int one = 1;

>  

> @@ -51,5 +48,3 @@ struct ctl_table firmware_config_table[] = {

>  	{ }

>  };

>  EXPORT_SYMBOL_GPL(firmware_config_table);

> -

> -#endif


Just a random early spring cleaning note for the future:

Although we cannot rename the firmware module to something more
sensible, we could just make the old sysfs firmware loading interface
*its own module firmware_class* and move the non-sysfs code to its own
first citizen file.

  Luis
diff mbox series

Patch

diff --git a/drivers/base/firmware_loader/Makefile b/drivers/base/firmware_loader/Makefile
index a97eeb0..5c7f422 100644
--- a/drivers/base/firmware_loader/Makefile
+++ b/drivers/base/firmware_loader/Makefile
@@ -1,7 +1,7 @@ 
 # SPDX-License-Identifier: GPL-2.0
 # Makefile for the Linux firmware loader
 
-obj-y			:= fallback_table.o
+obj-$(CONFIG_FW_LOADER_USER_HELPER) += fallback_table.o
 obj-$(CONFIG_FW_LOADER)	+= firmware_class.o
 firmware_class-objs := main.o
 firmware_class-$(CONFIG_FW_LOADER_USER_HELPER) += fallback.o
diff --git a/drivers/base/firmware_loader/fallback_table.c b/drivers/base/firmware_loader/fallback_table.c
index 7428659..776dd69 100644
--- a/drivers/base/firmware_loader/fallback_table.c
+++ b/drivers/base/firmware_loader/fallback_table.c
@@ -16,9 +16,6 @@ 
  * firmware fallback configuration table
  */
 
-/* Module or buit-in */
-#ifdef CONFIG_FW_LOADER_USER_HELPER
-
 static unsigned int zero;
 static unsigned int one = 1;
 
@@ -51,5 +48,3 @@  struct ctl_table firmware_config_table[] = {
 	{ }
 };
 EXPORT_SYMBOL_GPL(firmware_config_table);
-
-#endif