2021-06-21 04:49:21

by Tamseel Shams

Subject: [PATCH v4] serial: samsung: change to platform_get_irq_optional

In few older Samsung SoCs like s3c2410, s3c2412
and s3c2440, UART IP is having 2 interrupt lines.
However, in other SoCs like s3c6400, s5pv210,
exynos5433, and exynos4210 UART is having only 1
interrupt line. Due to this, "platform_get_irq(platdev, 1)"
call in the driver gives the following false-positive error:
"IRQ index 1 not found" on recent platforms.

This patch replaces the platform_get_irq() call with
platform_get_irq_optional() and hence avoiding the
false-positive error.

Signed-off-by: Tamseel Shams <[email protected]>
---
Commit message is changed.
Addressed Krzysztof's previous comment.

drivers/tty/serial/samsung_tty.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index 6ef614d8648c..c44582011b9b 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -1911,7 +1911,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
ourport->tx_irq = ret + 1;
}

- ret = platform_get_irq(platdev, 1);
+ ret = platform_get_irq_optional(platdev, 1);
if (ret > 0)
ourport->tx_irq = ret;
/*
--
2.17.1

2021-06-21 05:37:42

by Tamseel Shams

Subject: RE: [PATCH v4] serial: samsung: change to platform_get_irq_optional

> -----Original Message-----
> From: Tamseel Shams <[email protected]>
> Sent: Monday, June 21, 2021 10:18 AM
> To: [email protected]; [email protected]; [email protected];
> [email protected]
> Cc: [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; Tamseel Shams
> <[email protected]>
> Subject: [PATCH v4] serial: samsung: change to platform_get_irq_optional
>
> In few older Samsung SoCs like s3c2410, s3c2412 and s3c2440, UART IP is having
> 2 interrupt lines.
> However, in other SoCs like s3c6400, s5pv210, exynos5433, and exynos4210
> UART is having only 1 interrupt line. Due to this, "platform_get_irq(platdev, 1)"
> call in the driver gives the following false-positive error:
> "IRQ index 1 not found" on recent platforms.
>
> This patch replaces the platform_get_irq() call with
> platform_get_irq_optional() and hence avoiding the false-positive error.
>
> Signed-off-by: Tamseel Shams <[email protected]>
> ---
> Commit message is changed.
> Addressed Krzysztof's previous comment.
>
> drivers/tty/serial/samsung_tty.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
> index 6ef614d8648c..c44582011b9b 100644
> --- a/drivers/tty/serial/samsung_tty.c
> +++ b/drivers/tty/serial/samsung_tty.c
> @@ -1911,7 +1911,7 @@ static int s3c24xx_serial_init_port(struct
> s3c24xx_uart_port *ourport,
> ourport->tx_irq = ret + 1;
> }
>
> - ret = platform_get_irq(platdev, 1);
> + ret = platform_get_irq_optional(platdev, 1);
> if (ret > 0)
> ourport->tx_irq = ret;
> /*
> --
>

Please ignore this patch.
Sorry for the spam.

Thanks & Regards,
Tamseel Shams