[PATCH] PM: hibernate: make LZ4 available for hibernation compression

[PATCH] PM: hibernate: make LZ4 available for hibernation compression

[l1rox3]

Without this, CRYPTO_LZ4 had to be manually enabled in the config
to use LZ4 for hibernation compression. Add the select so it gets
pulled in automatically when hibernation is enabled, just like
CRYPTO_LZO already does.

Tested-by: l1rox3 <l1rox3.developer@gmail.com>
Signed-off-by: l1rox3 <l1rox3.developer@gmail.com>
---
 kernel/power/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 05337f437cca..530c897311d4 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -42,6 +42,7 @@ config HIBERNATION
 	select CRC32
 	select CRYPTO
 	select CRYPTO_LZO
+	select CRYPTO_LZ4
 	help
 	  Enable the suspend to disk (STD) functionality, which is usually
 	  called "hibernation" in user interfaces.  STD checkpoints the
-- 
2.54.0

Re: [PATCH] PM: hibernate: make LZ4 available for hibernation compression

[Rafael J. Wysocki]

On Wed, May 20, 2026 at 10:16 AM l1rox3 <l1rox3.developer@gmail.com> wrote:
>
> Without this, CRYPTO_LZ4 had to be manually enabled in the config
> to use LZ4 for hibernation compression. Add the select so it gets
> pulled in automatically when hibernation is enabled, just like
> CRYPTO_LZO already does.
>
> Tested-by: l1rox3 <l1rox3.developer@gmail.com>
> Signed-off-by: l1rox3 <l1rox3.developer@gmail.com>
> ---
>  kernel/power/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
> index 05337f437cca..530c897311d4 100644
> --- a/kernel/power/Kconfig
> +++ b/kernel/power/Kconfig
> @@ -42,6 +42,7 @@ config HIBERNATION
>         select CRC32
>         select CRYPTO
>         select CRYPTO_LZO
> +       select CRYPTO_LZ4
>         help
>           Enable the suspend to disk (STD) functionality, which is usually
>           called "hibernation" in user interfaces.  STD checkpoints the
> --

Please check the sashiko.dev feedback on this change:

https://sashiko.dev/#/patchset/20260520081254.13493-1-l1rox3.developer%40gmail.com

and either address it, or let me know why you don't think that it
needs to be addressed.

Thanks!

Re: [PATCH] PM: hibernate: make LZ4 available for hibernation compression

[Rafael J. Wysocki]

On Tue, May 26, 2026 at 1:30 PM l1rox3 <l1rox3.developer@gmail.com> wrote:
>
> CRYPTO_LZO is already selected unconditionally from HIBERNATION in
> the same way, and has been working fine like that for a long time.
> This patch just brings CRYPTO_LZ4 in line with that existing behavior.

OK, I guess people will complain if that turns out to be a problem.

Patch applied as 7.2 material, thanks!

> On Tue, May 26, 2026, 13:12 Rafael J. Wysocki <rafael@kernel.org> wrote:
>>
>> On Wed, May 20, 2026 at 10:16 AM l1rox3 <l1rox3.developer@gmail.com> wrote:
>> >
>> > Without this, CRYPTO_LZ4 had to be manually enabled in the config
>> > to use LZ4 for hibernation compression. Add the select so it gets
>> > pulled in automatically when hibernation is enabled, just like
>> > CRYPTO_LZO already does.
>> >
>> > Tested-by: l1rox3 <l1rox3.developer@gmail.com>
>> > Signed-off-by: l1rox3 <l1rox3.developer@gmail.com>
>> > ---
>> >  kernel/power/Kconfig | 1 +
>> >  1 file changed, 1 insertion(+)
>> >
>> > diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
>> > index 05337f437cca..530c897311d4 100644
>> > --- a/kernel/power/Kconfig
>> > +++ b/kernel/power/Kconfig
>> > @@ -42,6 +42,7 @@ config HIBERNATION
>> >         select CRC32
>> >         select CRYPTO
>> >         select CRYPTO_LZO
>> > +       select CRYPTO_LZ4
>> >         help
>> >           Enable the suspend to disk (STD) functionality, which is usually
>> >           called "hibernation" in user interfaces.  STD checkpoints the
>> > --
>>
>> Please check the sashiko.dev feedback on this change:
>>
>> https://sashiko.dev/#/patchset/20260520081254.13493-1-l1rox3.developer%40gmail.com
>>
>> and either address it, or let me know why you don't think that it
>> needs to be addressed.
>>
>> Thanks!