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* [PATCH] gpio: dwapb: Make the irqchip immutable
@ 2022-05-18 14:39 ` Geert Uytterhoeven
  0 siblings, 0 replies; 6+ messages in thread
From: Geert Uytterhoeven @ 2022-05-18 14:39 UTC (permalink / raw)
  To: Hoan Tran, Serge Semin, Linus Walleij, Bartosz Golaszewski,
	Damien Le Moal, Marc Zyngier
  Cc: linux-gpio, linux-riscv, Geert Uytterhoeven

Commit 6c846d026d49 ("gpio: Don't fiddle with irqchips marked as
immutable") added a warning to indicate if the gpiolib is altering the
internals of irqchips.  Following this change the following warning is
now observed for the dwapb driver:

    gpio gpiochip0: (50200000.gpio): not an immutable chip, please consider fixing it!

Fix this by making the irqchip in the dwapb driver immutable.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Against linux-next.
Boot-tested on SiPEED MAiXBiT (Canaan K210).
---
 drivers/gpio/gpio-dwapb.c | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 7130195da48d75dd..29b9395548151992 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -95,7 +95,6 @@ struct dwapb_context {
 #endif
 
 struct dwapb_gpio_port_irqchip {
-	struct irq_chip		irqchip;
 	unsigned int		nr_irqs;
 	unsigned int		irq[DWAPB_MAX_GPIOS];
 };
@@ -259,6 +258,8 @@ static void dwapb_irq_mask(struct irq_data *d)
 	val = dwapb_read(gpio, GPIO_INTMASK) | BIT(irqd_to_hwirq(d));
 	dwapb_write(gpio, GPIO_INTMASK, val);
 	raw_spin_unlock_irqrestore(&gc->bgpio_lock, flags);
+
+	gpiochip_disable_irq(gc, d->hwirq);
 }
 
 static void dwapb_irq_unmask(struct irq_data *d)
@@ -268,6 +269,8 @@ static void dwapb_irq_unmask(struct irq_data *d)
 	unsigned long flags;
 	u32 val;
 
+	gpiochip_enable_irq(gc, d->hwirq);
+
 	raw_spin_lock_irqsave(&gc->bgpio_lock, flags);
 	val = dwapb_read(gpio, GPIO_INTMASK) & ~BIT(irqd_to_hwirq(d));
 	dwapb_write(gpio, GPIO_INTMASK, val);
@@ -364,8 +367,23 @@ static int dwapb_irq_set_wake(struct irq_data *d, unsigned int enable)
 
 	return 0;
 }
+#else
+#define dwapb_irq_set_wake	NULL
 #endif
 
+static const struct irq_chip dwapb_irq_chip = {
+	.name		= DWAPB_DRIVER_NAME,
+	.irq_ack	= dwapb_irq_ack,
+	.irq_mask	= dwapb_irq_mask,
+	.irq_unmask	= dwapb_irq_unmask,
+	.irq_set_type	= dwapb_irq_set_type,
+	.irq_enable	= dwapb_irq_enable,
+	.irq_disable	= dwapb_irq_disable,
+	.irq_set_wake	= dwapb_irq_set_wake,
+	.flags		= IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
+};
+
 static int dwapb_gpio_set_debounce(struct gpio_chip *gc,
 				   unsigned offset, unsigned debounce)
 {
@@ -439,16 +457,6 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
 	girq->default_type = IRQ_TYPE_NONE;
 
 	port->pirq = pirq;
-	pirq->irqchip.name = DWAPB_DRIVER_NAME;
-	pirq->irqchip.irq_ack = dwapb_irq_ack;
-	pirq->irqchip.irq_mask = dwapb_irq_mask;
-	pirq->irqchip.irq_unmask = dwapb_irq_unmask;
-	pirq->irqchip.irq_set_type = dwapb_irq_set_type;
-	pirq->irqchip.irq_enable = dwapb_irq_enable;
-	pirq->irqchip.irq_disable = dwapb_irq_disable;
-#ifdef CONFIG_PM_SLEEP
-	pirq->irqchip.irq_set_wake = dwapb_irq_set_wake;
-#endif
 
 	/*
 	 * Intel ACPI-based platforms mostly have the DesignWare APB GPIO
@@ -475,7 +483,7 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
 		girq->parent_handler = dwapb_irq_handler;
 	}
 
-	girq->chip = &pirq->irqchip;
+	gpio_irq_chip_set_chip(girq, &dwapb_irq_chip);
 
 	return;
 
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH] gpio: dwapb: Make the irqchip immutable
@ 2022-05-18 14:39 ` Geert Uytterhoeven
  0 siblings, 0 replies; 6+ messages in thread
From: Geert Uytterhoeven @ 2022-05-18 14:39 UTC (permalink / raw)
  To: Hoan Tran, Serge Semin, Linus Walleij, Bartosz Golaszewski,
	Damien Le Moal, Marc Zyngier
  Cc: linux-gpio, linux-riscv, Geert Uytterhoeven

Commit 6c846d026d49 ("gpio: Don't fiddle with irqchips marked as
immutable") added a warning to indicate if the gpiolib is altering the
internals of irqchips.  Following this change the following warning is
now observed for the dwapb driver:

    gpio gpiochip0: (50200000.gpio): not an immutable chip, please consider fixing it!

Fix this by making the irqchip in the dwapb driver immutable.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Against linux-next.
Boot-tested on SiPEED MAiXBiT (Canaan K210).
---
 drivers/gpio/gpio-dwapb.c | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 7130195da48d75dd..29b9395548151992 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -95,7 +95,6 @@ struct dwapb_context {
 #endif
 
 struct dwapb_gpio_port_irqchip {
-	struct irq_chip		irqchip;
 	unsigned int		nr_irqs;
 	unsigned int		irq[DWAPB_MAX_GPIOS];
 };
@@ -259,6 +258,8 @@ static void dwapb_irq_mask(struct irq_data *d)
 	val = dwapb_read(gpio, GPIO_INTMASK) | BIT(irqd_to_hwirq(d));
 	dwapb_write(gpio, GPIO_INTMASK, val);
 	raw_spin_unlock_irqrestore(&gc->bgpio_lock, flags);
+
+	gpiochip_disable_irq(gc, d->hwirq);
 }
 
 static void dwapb_irq_unmask(struct irq_data *d)
@@ -268,6 +269,8 @@ static void dwapb_irq_unmask(struct irq_data *d)
 	unsigned long flags;
 	u32 val;
 
+	gpiochip_enable_irq(gc, d->hwirq);
+
 	raw_spin_lock_irqsave(&gc->bgpio_lock, flags);
 	val = dwapb_read(gpio, GPIO_INTMASK) & ~BIT(irqd_to_hwirq(d));
 	dwapb_write(gpio, GPIO_INTMASK, val);
@@ -364,8 +367,23 @@ static int dwapb_irq_set_wake(struct irq_data *d, unsigned int enable)
 
 	return 0;
 }
+#else
+#define dwapb_irq_set_wake	NULL
 #endif
 
+static const struct irq_chip dwapb_irq_chip = {
+	.name		= DWAPB_DRIVER_NAME,
+	.irq_ack	= dwapb_irq_ack,
+	.irq_mask	= dwapb_irq_mask,
+	.irq_unmask	= dwapb_irq_unmask,
+	.irq_set_type	= dwapb_irq_set_type,
+	.irq_enable	= dwapb_irq_enable,
+	.irq_disable	= dwapb_irq_disable,
+	.irq_set_wake	= dwapb_irq_set_wake,
+	.flags		= IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
+};
+
 static int dwapb_gpio_set_debounce(struct gpio_chip *gc,
 				   unsigned offset, unsigned debounce)
 {
@@ -439,16 +457,6 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
 	girq->default_type = IRQ_TYPE_NONE;
 
 	port->pirq = pirq;
-	pirq->irqchip.name = DWAPB_DRIVER_NAME;
-	pirq->irqchip.irq_ack = dwapb_irq_ack;
-	pirq->irqchip.irq_mask = dwapb_irq_mask;
-	pirq->irqchip.irq_unmask = dwapb_irq_unmask;
-	pirq->irqchip.irq_set_type = dwapb_irq_set_type;
-	pirq->irqchip.irq_enable = dwapb_irq_enable;
-	pirq->irqchip.irq_disable = dwapb_irq_disable;
-#ifdef CONFIG_PM_SLEEP
-	pirq->irqchip.irq_set_wake = dwapb_irq_set_wake;
-#endif
 
 	/*
 	 * Intel ACPI-based platforms mostly have the DesignWare APB GPIO
@@ -475,7 +483,7 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
 		girq->parent_handler = dwapb_irq_handler;
 	}
 
-	girq->chip = &pirq->irqchip;
+	gpio_irq_chip_set_chip(girq, &dwapb_irq_chip);
 
 	return;
 
-- 
2.25.1


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: dwapb: Make the irqchip immutable
  2022-05-18 14:39 ` Geert Uytterhoeven
@ 2022-05-18 15:00   ` Andy Shevchenko
  -1 siblings, 0 replies; 6+ messages in thread
From: Andy Shevchenko @ 2022-05-18 15:00 UTC (permalink / raw)
  To: Geert Uytterhoeven
  Cc: Hoan Tran, Serge Semin, Linus Walleij, Bartosz Golaszewski,
	Damien Le Moal, Marc Zyngier, open list:GPIO SUBSYSTEM,
	linux-riscv

On Wed, May 18, 2022 at 4:40 PM Geert Uytterhoeven
<geert+renesas@glider.be> wrote:
>
> Commit 6c846d026d49 ("gpio: Don't fiddle with irqchips marked as
> immutable") added a warning to indicate if the gpiolib is altering the
> internals of irqchips.  Following this change the following warning is
> now observed for the dwapb driver:
>
>     gpio gpiochip0: (50200000.gpio): not an immutable chip, please consider fixing it!
>
> Fix this by making the irqchip in the dwapb driver immutable.

Same comments as per PCA953x driver.

-- 
With Best Regards,
Andy Shevchenko

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: dwapb: Make the irqchip immutable
@ 2022-05-18 15:00   ` Andy Shevchenko
  0 siblings, 0 replies; 6+ messages in thread
From: Andy Shevchenko @ 2022-05-18 15:00 UTC (permalink / raw)
  To: Geert Uytterhoeven
  Cc: Hoan Tran, Serge Semin, Linus Walleij, Bartosz Golaszewski,
	Damien Le Moal, Marc Zyngier, open list:GPIO SUBSYSTEM,
	linux-riscv

On Wed, May 18, 2022 at 4:40 PM Geert Uytterhoeven
<geert+renesas@glider.be> wrote:
>
> Commit 6c846d026d49 ("gpio: Don't fiddle with irqchips marked as
> immutable") added a warning to indicate if the gpiolib is altering the
> internals of irqchips.  Following this change the following warning is
> now observed for the dwapb driver:
>
>     gpio gpiochip0: (50200000.gpio): not an immutable chip, please consider fixing it!
>
> Fix this by making the irqchip in the dwapb driver immutable.

Same comments as per PCA953x driver.

-- 
With Best Regards,
Andy Shevchenko

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: dwapb: Make the irqchip immutable
  2022-05-18 14:39 ` Geert Uytterhoeven
@ 2022-05-22 21:10   ` Serge Semin
  -1 siblings, 0 replies; 6+ messages in thread
From: Serge Semin @ 2022-05-22 21:10 UTC (permalink / raw)
  To: Geert Uytterhoeven
  Cc: Serge Semin, Hoan Tran, Linus Walleij, Bartosz Golaszewski,
	Damien Le Moal, Marc Zyngier, linux-gpio, linux-riscv

On Wed, May 18, 2022 at 04:39:42PM +0200, Geert Uytterhoeven wrote:
> Commit 6c846d026d49 ("gpio: Don't fiddle with irqchips marked as
> immutable") added a warning to indicate if the gpiolib is altering the
> internals of irqchips.  Following this change the following warning is
> now observed for the dwapb driver:
> 
>     gpio gpiochip0: (50200000.gpio): not an immutable chip, please consider fixing it!
> 
> Fix this by making the irqchip in the dwapb driver immutable.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---

> Against linux-next.
> Boot-tested on SiPEED MAiXBiT (Canaan K210).

Currently no objection against the change. Thanks.

Acked-by: Serge Semin <fancer.lancer@gmail.com>

-Sergey

> ---
>  drivers/gpio/gpio-dwapb.c | 32 ++++++++++++++++++++------------
>  1 file changed, 20 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
> index 7130195da48d75dd..29b9395548151992 100644
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -95,7 +95,6 @@ struct dwapb_context {
>  #endif
>  
>  struct dwapb_gpio_port_irqchip {
> -	struct irq_chip		irqchip;
>  	unsigned int		nr_irqs;
>  	unsigned int		irq[DWAPB_MAX_GPIOS];
>  };
> @@ -259,6 +258,8 @@ static void dwapb_irq_mask(struct irq_data *d)
>  	val = dwapb_read(gpio, GPIO_INTMASK) | BIT(irqd_to_hwirq(d));
>  	dwapb_write(gpio, GPIO_INTMASK, val);
>  	raw_spin_unlock_irqrestore(&gc->bgpio_lock, flags);
> +
> +	gpiochip_disable_irq(gc, d->hwirq);
>  }
>  
>  static void dwapb_irq_unmask(struct irq_data *d)
> @@ -268,6 +269,8 @@ static void dwapb_irq_unmask(struct irq_data *d)
>  	unsigned long flags;
>  	u32 val;
>  
> +	gpiochip_enable_irq(gc, d->hwirq);
> +
>  	raw_spin_lock_irqsave(&gc->bgpio_lock, flags);
>  	val = dwapb_read(gpio, GPIO_INTMASK) & ~BIT(irqd_to_hwirq(d));
>  	dwapb_write(gpio, GPIO_INTMASK, val);
> @@ -364,8 +367,23 @@ static int dwapb_irq_set_wake(struct irq_data *d, unsigned int enable)
>  
>  	return 0;
>  }
> +#else
> +#define dwapb_irq_set_wake	NULL
>  #endif
>  
> +static const struct irq_chip dwapb_irq_chip = {
> +	.name		= DWAPB_DRIVER_NAME,
> +	.irq_ack	= dwapb_irq_ack,
> +	.irq_mask	= dwapb_irq_mask,
> +	.irq_unmask	= dwapb_irq_unmask,
> +	.irq_set_type	= dwapb_irq_set_type,
> +	.irq_enable	= dwapb_irq_enable,
> +	.irq_disable	= dwapb_irq_disable,
> +	.irq_set_wake	= dwapb_irq_set_wake,
> +	.flags		= IRQCHIP_IMMUTABLE,
> +	GPIOCHIP_IRQ_RESOURCE_HELPERS,
> +};
> +
>  static int dwapb_gpio_set_debounce(struct gpio_chip *gc,
>  				   unsigned offset, unsigned debounce)
>  {
> @@ -439,16 +457,6 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
>  	girq->default_type = IRQ_TYPE_NONE;
>  
>  	port->pirq = pirq;
> -	pirq->irqchip.name = DWAPB_DRIVER_NAME;
> -	pirq->irqchip.irq_ack = dwapb_irq_ack;
> -	pirq->irqchip.irq_mask = dwapb_irq_mask;
> -	pirq->irqchip.irq_unmask = dwapb_irq_unmask;
> -	pirq->irqchip.irq_set_type = dwapb_irq_set_type;
> -	pirq->irqchip.irq_enable = dwapb_irq_enable;
> -	pirq->irqchip.irq_disable = dwapb_irq_disable;
> -#ifdef CONFIG_PM_SLEEP
> -	pirq->irqchip.irq_set_wake = dwapb_irq_set_wake;
> -#endif
>  
>  	/*
>  	 * Intel ACPI-based platforms mostly have the DesignWare APB GPIO
> @@ -475,7 +483,7 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
>  		girq->parent_handler = dwapb_irq_handler;
>  	}
>  
> -	girq->chip = &pirq->irqchip;
> +	gpio_irq_chip_set_chip(girq, &dwapb_irq_chip);
>  
>  	return;
>  
> -- 
> 2.25.1
> 

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: dwapb: Make the irqchip immutable
@ 2022-05-22 21:10   ` Serge Semin
  0 siblings, 0 replies; 6+ messages in thread
From: Serge Semin @ 2022-05-22 21:10 UTC (permalink / raw)
  To: Geert Uytterhoeven
  Cc: Serge Semin, Hoan Tran, Linus Walleij, Bartosz Golaszewski,
	Damien Le Moal, Marc Zyngier, linux-gpio, linux-riscv

On Wed, May 18, 2022 at 04:39:42PM +0200, Geert Uytterhoeven wrote:
> Commit 6c846d026d49 ("gpio: Don't fiddle with irqchips marked as
> immutable") added a warning to indicate if the gpiolib is altering the
> internals of irqchips.  Following this change the following warning is
> now observed for the dwapb driver:
> 
>     gpio gpiochip0: (50200000.gpio): not an immutable chip, please consider fixing it!
> 
> Fix this by making the irqchip in the dwapb driver immutable.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---

> Against linux-next.
> Boot-tested on SiPEED MAiXBiT (Canaan K210).

Currently no objection against the change. Thanks.

Acked-by: Serge Semin <fancer.lancer@gmail.com>

-Sergey

> ---
>  drivers/gpio/gpio-dwapb.c | 32 ++++++++++++++++++++------------
>  1 file changed, 20 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
> index 7130195da48d75dd..29b9395548151992 100644
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -95,7 +95,6 @@ struct dwapb_context {
>  #endif
>  
>  struct dwapb_gpio_port_irqchip {
> -	struct irq_chip		irqchip;
>  	unsigned int		nr_irqs;
>  	unsigned int		irq[DWAPB_MAX_GPIOS];
>  };
> @@ -259,6 +258,8 @@ static void dwapb_irq_mask(struct irq_data *d)
>  	val = dwapb_read(gpio, GPIO_INTMASK) | BIT(irqd_to_hwirq(d));
>  	dwapb_write(gpio, GPIO_INTMASK, val);
>  	raw_spin_unlock_irqrestore(&gc->bgpio_lock, flags);
> +
> +	gpiochip_disable_irq(gc, d->hwirq);
>  }
>  
>  static void dwapb_irq_unmask(struct irq_data *d)
> @@ -268,6 +269,8 @@ static void dwapb_irq_unmask(struct irq_data *d)
>  	unsigned long flags;
>  	u32 val;
>  
> +	gpiochip_enable_irq(gc, d->hwirq);
> +
>  	raw_spin_lock_irqsave(&gc->bgpio_lock, flags);
>  	val = dwapb_read(gpio, GPIO_INTMASK) & ~BIT(irqd_to_hwirq(d));
>  	dwapb_write(gpio, GPIO_INTMASK, val);
> @@ -364,8 +367,23 @@ static int dwapb_irq_set_wake(struct irq_data *d, unsigned int enable)
>  
>  	return 0;
>  }
> +#else
> +#define dwapb_irq_set_wake	NULL
>  #endif
>  
> +static const struct irq_chip dwapb_irq_chip = {
> +	.name		= DWAPB_DRIVER_NAME,
> +	.irq_ack	= dwapb_irq_ack,
> +	.irq_mask	= dwapb_irq_mask,
> +	.irq_unmask	= dwapb_irq_unmask,
> +	.irq_set_type	= dwapb_irq_set_type,
> +	.irq_enable	= dwapb_irq_enable,
> +	.irq_disable	= dwapb_irq_disable,
> +	.irq_set_wake	= dwapb_irq_set_wake,
> +	.flags		= IRQCHIP_IMMUTABLE,
> +	GPIOCHIP_IRQ_RESOURCE_HELPERS,
> +};
> +
>  static int dwapb_gpio_set_debounce(struct gpio_chip *gc,
>  				   unsigned offset, unsigned debounce)
>  {
> @@ -439,16 +457,6 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
>  	girq->default_type = IRQ_TYPE_NONE;
>  
>  	port->pirq = pirq;
> -	pirq->irqchip.name = DWAPB_DRIVER_NAME;
> -	pirq->irqchip.irq_ack = dwapb_irq_ack;
> -	pirq->irqchip.irq_mask = dwapb_irq_mask;
> -	pirq->irqchip.irq_unmask = dwapb_irq_unmask;
> -	pirq->irqchip.irq_set_type = dwapb_irq_set_type;
> -	pirq->irqchip.irq_enable = dwapb_irq_enable;
> -	pirq->irqchip.irq_disable = dwapb_irq_disable;
> -#ifdef CONFIG_PM_SLEEP
> -	pirq->irqchip.irq_set_wake = dwapb_irq_set_wake;
> -#endif
>  
>  	/*
>  	 * Intel ACPI-based platforms mostly have the DesignWare APB GPIO
> @@ -475,7 +483,7 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio,
>  		girq->parent_handler = dwapb_irq_handler;
>  	}
>  
> -	girq->chip = &pirq->irqchip;
> +	gpio_irq_chip_set_chip(girq, &dwapb_irq_chip);
>  
>  	return;
>  
> -- 
> 2.25.1
> 

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-05-23  8:37 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-05-18 14:39 [PATCH] gpio: dwapb: Make the irqchip immutable Geert Uytterhoeven
2022-05-18 14:39 ` Geert Uytterhoeven
2022-05-18 15:00 ` Andy Shevchenko
2022-05-18 15:00   ` Andy Shevchenko
2022-05-22 21:10 ` Serge Semin
2022-05-22 21:10   ` Serge Semin

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