* [PATCH] pinctrl: samsung: use raw_spinlock for s3c64xx
[not found] <CGME20210127001644epcas2p13cbc984fecc3ac7700a422488b488135@epcas2p1.samsung.com>
@ 2021-01-27 0:16 ` Chanho Park
2021-01-27 8:00 ` Krzysztof Kozlowski
2021-01-27 8:14 ` Linus Walleij
0 siblings, 2 replies; 4+ messages in thread
From: Chanho Park @ 2021-01-27 0:16 UTC (permalink / raw)
To: Tomasz Figa, Krzysztof Kozlowski, Sylwester Nawrocki,
Linus Walleij
Cc: linux-arm-kernel, linux-samsung-soc, linux-gpio, Chanho Park
This patch converts spin_[lock|unlock] functions of pin bank to
raw_spinlock to support preempt-rt for pinctrl-s3c64xx. Below patch
converted spinlock_t to raw_spinlock_t but it didn't convert the
s3c64xx's spinlock.
Fixes: 1f306ecbe0f6 ("pinctrl: samsung: use raw_spinlock for locking")
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
---
drivers/pinctrl/samsung/pinctrl-s3c64xx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/samsung/pinctrl-s3c64xx.c b/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
index b8166e3fe4ce..53e2a6412add 100644
--- a/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
+++ b/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
@@ -286,14 +286,14 @@ static void s3c64xx_irq_set_function(struct samsung_pinctrl_drv_data *d,
shift = shift * bank_type->fld_width[PINCFG_TYPE_FUNC];
mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
- spin_lock_irqsave(&bank->slock, flags);
+ raw_spin_lock_irqsave(&bank->slock, flags);
val = readl(reg);
val &= ~(mask << shift);
val |= bank->eint_func << shift;
writel(val, reg);
- spin_unlock_irqrestore(&bank->slock, flags);
+ raw_spin_unlock_irqrestore(&bank->slock, flags);
}
/*
--
2.30.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] pinctrl: samsung: use raw_spinlock for s3c64xx
2021-01-27 0:16 ` [PATCH] pinctrl: samsung: use raw_spinlock for s3c64xx Chanho Park
@ 2021-01-27 8:00 ` Krzysztof Kozlowski
2021-01-27 8:14 ` Linus Walleij
1 sibling, 0 replies; 4+ messages in thread
From: Krzysztof Kozlowski @ 2021-01-27 8:00 UTC (permalink / raw)
To: Chanho Park
Cc: Tomasz Figa, Sylwester Nawrocki, Linus Walleij, linux-arm-kernel,
linux-samsung-soc, linux-gpio
On Wed, Jan 27, 2021 at 09:16:31AM +0900, Chanho Park wrote:
> This patch converts spin_[lock|unlock] functions of pin bank to
> raw_spinlock to support preempt-rt for pinctrl-s3c64xx. Below patch
> converted spinlock_t to raw_spinlock_t but it didn't convert the
> s3c64xx's spinlock.
Please, don't use "This patch":
https://elixir.bootlin.com/linux/latest/source/Documentation/process/submitting-patches.rst#L89
The commit title should be changed - this is a fix now.
>
> Fixes: 1f306ecbe0f6 ("pinctrl: samsung: use raw_spinlock for locking")
>
No line break.
Best regards,
Krzysztof
> Cc: Tomasz Figa <tomasz.figa@gmail.com>
> Cc: Krzysztof Kozlowski <krzk@kernel.org>
> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Signed-off-by: Chanho Park <chanho61.park@samsung.com>
> ---
> drivers/pinctrl/samsung/pinctrl-s3c64xx.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pinctrl/samsung/pinctrl-s3c64xx.c b/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
> index b8166e3fe4ce..53e2a6412add 100644
> --- a/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
> +++ b/drivers/pinctrl/samsung/pinctrl-s3c64xx.c
> @@ -286,14 +286,14 @@ static void s3c64xx_irq_set_function(struct samsung_pinctrl_drv_data *d,
> shift = shift * bank_type->fld_width[PINCFG_TYPE_FUNC];
> mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
>
> - spin_lock_irqsave(&bank->slock, flags);
> + raw_spin_lock_irqsave(&bank->slock, flags);
>
> val = readl(reg);
> val &= ~(mask << shift);
> val |= bank->eint_func << shift;
> writel(val, reg);
>
> - spin_unlock_irqrestore(&bank->slock, flags);
> + raw_spin_unlock_irqrestore(&bank->slock, flags);
> }
>
> /*
> --
> 2.30.0
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] pinctrl: samsung: use raw_spinlock for s3c64xx
2021-01-27 0:16 ` [PATCH] pinctrl: samsung: use raw_spinlock for s3c64xx Chanho Park
2021-01-27 8:00 ` Krzysztof Kozlowski
@ 2021-01-27 8:14 ` Linus Walleij
2021-01-27 8:23 ` Chanho Park
1 sibling, 1 reply; 4+ messages in thread
From: Linus Walleij @ 2021-01-27 8:14 UTC (permalink / raw)
To: Chanho Park
Cc: Tomasz Figa, Krzysztof Kozlowski, Sylwester Nawrocki, Linux ARM,
linux-samsung-soc, open list:GPIO SUBSYSTEM
On Wed, Jan 27, 2021 at 1:16 AM Chanho Park <chanho61.park@samsung.com> wrote:
> This patch converts spin_[lock|unlock] functions of pin bank to
> raw_spinlock to support preempt-rt for pinctrl-s3c64xx. Below patch
> converted spinlock_t to raw_spinlock_t but it didn't convert the
> s3c64xx's spinlock.
>
> Fixes: 1f306ecbe0f6 ("pinctrl: samsung: use raw_spinlock for locking")
> Cc: Tomasz Figa <tomasz.figa@gmail.com>
> Cc: Krzysztof Kozlowski <krzk@kernel.org>
> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Fixed up the patch commit text a bit as indicated by
Krzysztof and applied so the tree compiles again.
Thanks for fixing!
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: [PATCH] pinctrl: samsung: use raw_spinlock for s3c64xx
2021-01-27 8:14 ` Linus Walleij
@ 2021-01-27 8:23 ` Chanho Park
0 siblings, 0 replies; 4+ messages in thread
From: Chanho Park @ 2021-01-27 8:23 UTC (permalink / raw)
To: 'Linus Walleij'
Cc: 'Tomasz Figa', 'Krzysztof Kozlowski',
'Sylwester Nawrocki', 'Linux ARM',
'linux-samsung-soc', 'open list:GPIO SUBSYSTEM'
> Fixed up the patch commit text a bit as indicated by Krzysztof and applied
> so the tree compiles again.
> Thanks for fixing!
Thanks a lot. I'll check them up carefully next time :)
Best Regards,
Chanho Park
^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <CGME20210127001644epcas2p13cbc984fecc3ac7700a422488b488135@epcas2p1.samsung.com>
2021-01-27 0:16 ` [PATCH] pinctrl: samsung: use raw_spinlock for s3c64xx Chanho Park
2021-01-27 8:00 ` Krzysztof Kozlowski
2021-01-27 8:14 ` Linus Walleij
2021-01-27 8:23 ` Chanho Park
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