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[1/6] mmc: sh_mobile_sdhi: don't use array for DT configs

Message ID 1459934734-3613-2-git-send-email-wsa@the-dreams.de (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Wolfram Sang April 6, 2016, 9:25 a.m. UTC 
From: Wolfram Sang <wsa+renesas@sang-engineering.com>

We won't access an index based array to get our DT config, but create
seperate structs instead. So, remove the array which only wastes memory.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/mmc/host/sh_mobile_sdhi.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

Comments

Geert Uytterhoeven April 6, 2016, 9:56 a.m. UTC | #1 
Hi Wolfram,

On Wed, Apr 6, 2016 at 11:25 AM, Wolfram Sang <wsa@the-dreams.de> wrote:
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
>
> We won't access an index based array to get our DT config, but create
> seperate structs instead. So, remove the array which only wastes memory.

While I agree with your patch, I don't agree with the memory consumption
comment...

It does remove 2 lines of source code ;-)

> --- a/drivers/mmc/host/sh_mobile_sdhi.c
> +++ b/drivers/mmc/host/sh_mobile_sdhi.c
> @@ -51,10 +51,8 @@ struct sh_mobile_sdhi_of_data {
>         unsigned bus_shift;
>  };
>
> -static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = {
> -       {
> -               .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT,
> -       },

Array of a single element.

> +static const struct sh_mobile_sdhi_of_data of_default_cfg = {
> +       .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT,
>  };

Single element.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
Wolfram Sang April 6, 2016, 10:27 a.m. UTC | #2 
> It does remove 2 lines of source code ;-)

Memory on disk :)
diff mbox

Patch

diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index cf10f8cca9ee2d..9beee48d2e280d 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -51,10 +51,8 @@  struct sh_mobile_sdhi_of_data {
 	unsigned bus_shift;
 };
 
-static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = {
-	{
-		.tmio_flags = TMIO_MMC_HAS_IDLE_WAIT,
-	},
+static const struct sh_mobile_sdhi_of_data of_default_cfg = {
+	.tmio_flags = TMIO_MMC_HAS_IDLE_WAIT,
 };
 
 static const struct sh_mobile_sdhi_of_data of_rcar_gen1_compatible = {
@@ -81,9 +79,9 @@  static const struct sh_mobile_sdhi_of_data of_rcar_gen3_compatible = {
 static const struct of_device_id sh_mobile_sdhi_of_match[] = {
 	{ .compatible = "renesas,sdhi-shmobile" },
 	{ .compatible = "renesas,sdhi-sh7372" },
-	{ .compatible = "renesas,sdhi-sh73a0", .data = &sh_mobile_sdhi_of_cfg[0], },
-	{ .compatible = "renesas,sdhi-r8a73a4", .data = &sh_mobile_sdhi_of_cfg[0], },
-	{ .compatible = "renesas,sdhi-r8a7740", .data = &sh_mobile_sdhi_of_cfg[0], },
+	{ .compatible = "renesas,sdhi-sh73a0", .data = &of_default_cfg, },
+	{ .compatible = "renesas,sdhi-r8a73a4", .data = &of_default_cfg, },
+	{ .compatible = "renesas,sdhi-r8a7740", .data = &of_default_cfg, },
 	{ .compatible = "renesas,sdhi-r8a7778", .data = &of_rcar_gen1_compatible, },
 	{ .compatible = "renesas,sdhi-r8a7779", .data = &of_rcar_gen1_compatible, },
 	{ .compatible = "renesas,sdhi-r8a7790", .data = &of_rcar_gen2_compatible, },