* [PATCH] MIPS: SGI-IP27: Free some unused memory
@ 2022-04-23 13:24 Christophe JAILLET
2022-04-26 14:32 ` Thomas Bogendoerfer
0 siblings, 1 reply; 2+ messages in thread
From: Christophe JAILLET @ 2022-04-23 13:24 UTC (permalink / raw)
To: Thomas Bogendoerfer
Cc: linux-kernel, kernel-janitors, Christophe JAILLET, linux-mips
platform_device_add_data() duplicates the memory it is passed. So we can
free some memory to save a few bytes that would remain unused otherwise.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
arch/mips/sgi-ip27/ip27-xtalk.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/mips/sgi-ip27/ip27-xtalk.c b/arch/mips/sgi-ip27/ip27-xtalk.c
index 000ede156bdc..e762886d1dda 100644
--- a/arch/mips/sgi-ip27/ip27-xtalk.c
+++ b/arch/mips/sgi-ip27/ip27-xtalk.c
@@ -53,6 +53,8 @@ static void bridge_platform_create(nasid_t nasid, int widget, int masterwid)
}
platform_device_add_resources(pdev, &w1_res, 1);
platform_device_add_data(pdev, wd, sizeof(*wd));
+ /* platform_device_add_data() duplicates the data */
+ kfree(wd);
platform_device_add(pdev);
bd = kzalloc(sizeof(*bd), GFP_KERNEL);
@@ -83,6 +85,8 @@ static void bridge_platform_create(nasid_t nasid, int widget, int masterwid)
bd->io_offset = offset;
platform_device_add_data(pdev, bd, sizeof(*bd));
+ /* platform_device_add_data() duplicates the data */
+ kfree(bd);
platform_device_add(pdev);
pr_info("xtalk:n%d/%x bridge widget\n", nasid, widget);
return;
--
2.32.0
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] MIPS: SGI-IP27: Free some unused memory
2022-04-23 13:24 [PATCH] MIPS: SGI-IP27: Free some unused memory Christophe JAILLET
@ 2022-04-26 14:32 ` Thomas Bogendoerfer
0 siblings, 0 replies; 2+ messages in thread
From: Thomas Bogendoerfer @ 2022-04-26 14:32 UTC (permalink / raw)
To: Christophe JAILLET; +Cc: linux-kernel, kernel-janitors, linux-mips
On Sat, Apr 23, 2022 at 03:24:03PM +0200, Christophe JAILLET wrote:
> platform_device_add_data() duplicates the memory it is passed. So we can
> free some memory to save a few bytes that would remain unused otherwise.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> arch/mips/sgi-ip27/ip27-xtalk.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/mips/sgi-ip27/ip27-xtalk.c b/arch/mips/sgi-ip27/ip27-xtalk.c
> index 000ede156bdc..e762886d1dda 100644
> --- a/arch/mips/sgi-ip27/ip27-xtalk.c
> +++ b/arch/mips/sgi-ip27/ip27-xtalk.c
> @@ -53,6 +53,8 @@ static void bridge_platform_create(nasid_t nasid, int widget, int masterwid)
> }
> platform_device_add_resources(pdev, &w1_res, 1);
> platform_device_add_data(pdev, wd, sizeof(*wd));
> + /* platform_device_add_data() duplicates the data */
> + kfree(wd);
> platform_device_add(pdev);
>
> bd = kzalloc(sizeof(*bd), GFP_KERNEL);
> @@ -83,6 +85,8 @@ static void bridge_platform_create(nasid_t nasid, int widget, int masterwid)
> bd->io_offset = offset;
>
> platform_device_add_data(pdev, bd, sizeof(*bd));
> + /* platform_device_add_data() duplicates the data */
> + kfree(bd);
> platform_device_add(pdev);
> pr_info("xtalk:n%d/%x bridge widget\n", nasid, widget);
> return;
> --
> 2.32.0
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
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2022-04-26 14:32 ` Thomas Bogendoerfer
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