[BACKPORT 4.14.y v2 0/6] Candidates from Spreadtrum 4.14 product kernel

[BACKPORT 4.14.y v2 0/6] Candidates from Spreadtrum 4.14 product kernel

[Baolin Wang]

With Arnd's script [1] help, I found some bugfixes in Spreadtrum 4.14 product
kernel, but missing in v4.14.141:

25a09ce79639 ppp: mppe: Revert "ppp: mppe: Add softdep to arc4"
47d3d7fdb10a ip6: fix skb leak in ip6frag_expire_frag_queue()
5b9cea15a3de serial: sprd: Modify the baud rate calculation formula
513e1073d52e locking/lockdep: Add debug_locks check in __lock_downgrade()
957063c92473 pinctrl: sprd: Use define directive for sprd_pinconf_params values
87a2b65fc855 power: supply: sysfs: ratelimit property read error message

[1] https://lore.kernel.org/lkml/20190322154425.3852517-19-arnd@arndb.de/T/

Changes from v1:
 - Drop 2 unnecessary patches (patch 1 and patch 4) from v1 patch set.
 - Add upstream commit id in change log for each stable patch.

David Lechner (1):
  power: supply: sysfs: ratelimit property read error message

Eric Biggers (1):
  ppp: mppe: Revert "ppp: mppe: Add softdep to arc4"

Eric Dumazet (1):
  ip6: fix skb leak in ip6frag_expire_frag_queue()

Lanqing Liu (1):
  serial: sprd: Modify the baud rate calculation formula

Nathan Chancellor (1):
  pinctrl: sprd: Use define directive for sprd_pinconf_params values

Waiman Long (1):
  locking/lockdep: Add debug_locks check in __lock_downgrade()

 drivers/net/ppp/ppp_mppe.c                |    1 -
 drivers/pinctrl/sprd/pinctrl-sprd.c       |    6 ++----
 drivers/power/supply/power_supply_sysfs.c |    3 ++-
 drivers/tty/serial/sprd_serial.c          |    2 +-
 include/net/ipv6_frag.h                   |    1 -
 kernel/locking/lockdep.c                  |    3 +++
 6 files changed, 8 insertions(+), 8 deletions(-)

-- 
1.7.9.5

[BACKPORT 4.14.y v2 5/6] ppp: mppe: Revert "ppp: mppe: Add softdep to arc4"

[Baolin Wang]

From: Eric Biggers <ebiggers@google.com>

[Upstream commit 25a09ce79639a8775244808c17282c491cff89cf]

Commit 0e5a610b5ca5 ("ppp: mppe: switch to RC4 library interface"),
which was merged through the crypto tree for v5.3, changed ppp_mppe.c to
use the new arc4_crypt() library function rather than access RC4 through
the dynamic crypto_skcipher API.

Meanwhile commit aad1dcc4f011 ("ppp: mppe: Add softdep to arc4") was
merged through the net tree and added a module soft-dependency on "arc4".

The latter commit no longer makes sense because the code now uses the
"libarc4" module rather than "arc4", and also due to the direct use of
arc4_crypt(), no module soft-dependency is required.

So revert the latter commit.

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
 drivers/net/ppp/ppp_mppe.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c
index d9eda7c..6c7fd98 100644
--- a/drivers/net/ppp/ppp_mppe.c
+++ b/drivers/net/ppp/ppp_mppe.c
@@ -63,7 +63,6 @@
 MODULE_DESCRIPTION("Point-to-Point Protocol Microsoft Point-to-Point Encryption support");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_ALIAS("ppp-compress-" __stringify(CI_MPPE));
-MODULE_SOFTDEP("pre: arc4");
 MODULE_VERSION("1.0.2");
 
 static unsigned int
-- 
1.7.9.5

Re: [BACKPORT 4.14.y v2 5/6] ppp: mppe: Revert "ppp: mppe: Add softdep to arc4"

[Eric Biggers]

On Thu, Sep 05, 2019 at 11:10:45AM +0800, Baolin Wang wrote:
> From: Eric Biggers <ebiggers@google.com>
> 
> [Upstream commit 25a09ce79639a8775244808c17282c491cff89cf]
> 
> Commit 0e5a610b5ca5 ("ppp: mppe: switch to RC4 library interface"),
> which was merged through the crypto tree for v5.3, changed ppp_mppe.c to
> use the new arc4_crypt() library function rather than access RC4 through
> the dynamic crypto_skcipher API.
> 
> Meanwhile commit aad1dcc4f011 ("ppp: mppe: Add softdep to arc4") was
> merged through the net tree and added a module soft-dependency on "arc4".
> 
> The latter commit no longer makes sense because the code now uses the
> "libarc4" module rather than "arc4", and also due to the direct use of
> arc4_crypt(), no module soft-dependency is required.
> 
> So revert the latter commit.
> 
> Cc: Takashi Iwai <tiwai@suse.de>
> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> Signed-off-by: Eric Biggers <ebiggers@google.com>
> Signed-off-by: David S. Miller <davem@davemloft.net>
> Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
> ---
>  drivers/net/ppp/ppp_mppe.c |    1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c
> index d9eda7c..6c7fd98 100644
> --- a/drivers/net/ppp/ppp_mppe.c
> +++ b/drivers/net/ppp/ppp_mppe.c
> @@ -63,7 +63,6 @@
>  MODULE_DESCRIPTION("Point-to-Point Protocol Microsoft Point-to-Point Encryption support");
>  MODULE_LICENSE("Dual BSD/GPL");
>  MODULE_ALIAS("ppp-compress-" __stringify(CI_MPPE));
> -MODULE_SOFTDEP("pre: arc4");

Why is this being backported?  This revert was only needed because of a
different patch that was merged in v5.3, as I explained in the commit message.

- Eric

Re: [BACKPORT 4.14.y v2 5/6] ppp: mppe: Revert "ppp: mppe: Add softdep to arc4"

[Baolin Wang]

On Fri, 6 Sep 2019 at 00:16, Eric Biggers <ebiggers@google.com> wrote:
>
> On Thu, Sep 05, 2019 at 11:10:45AM +0800, Baolin Wang wrote:
> > From: Eric Biggers <ebiggers@google.com>
> >
> > [Upstream commit 25a09ce79639a8775244808c17282c491cff89cf]
> >
> > Commit 0e5a610b5ca5 ("ppp: mppe: switch to RC4 library interface"),
> > which was merged through the crypto tree for v5.3, changed ppp_mppe.c to
> > use the new arc4_crypt() library function rather than access RC4 through
> > the dynamic crypto_skcipher API.
> >
> > Meanwhile commit aad1dcc4f011 ("ppp: mppe: Add softdep to arc4") was
> > merged through the net tree and added a module soft-dependency on "arc4".
> >
> > The latter commit no longer makes sense because the code now uses the
> > "libarc4" module rather than "arc4", and also due to the direct use of
> > arc4_crypt(), no module soft-dependency is required.
> >
> > So revert the latter commit.
> >
> > Cc: Takashi Iwai <tiwai@suse.de>
> > Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> > Signed-off-by: Eric Biggers <ebiggers@google.com>
> > Signed-off-by: David S. Miller <davem@davemloft.net>
> > Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
> > ---
> >  drivers/net/ppp/ppp_mppe.c |    1 -
> >  1 file changed, 1 deletion(-)
> >
> > diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c
> > index d9eda7c..6c7fd98 100644
> > --- a/drivers/net/ppp/ppp_mppe.c
> > +++ b/drivers/net/ppp/ppp_mppe.c
> > @@ -63,7 +63,6 @@
> >  MODULE_DESCRIPTION("Point-to-Point Protocol Microsoft Point-to-Point Encryption support");
> >  MODULE_LICENSE("Dual BSD/GPL");
> >  MODULE_ALIAS("ppp-compress-" __stringify(CI_MPPE));
> > -MODULE_SOFTDEP("pre: arc4");
>
> Why is this being backported?  This revert was only needed because of a
> different patch that was merged in v5.3, as I explained in the commit message.

Sorry I missed this. I should remove this patch from our product kernel too.

-- 
Baolin Wang
Best Regards