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From: Jiri Slaby <jirislaby@kernel.org>
To: Bin Meng <bmeng@tinylab.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	linux-serial <linux-serial@vger.kernel.org>
Cc: "catalin.marinas" <catalin.marinas@arm.com>,
	gregkh <gregkh@linuxfoundation.org>,
	linux <linux@armlinux.org.uk>, will <will@kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 1/3] serial: earlycon-arm-semihost: Move smh_putc() variants in respective arch's semihost.h
Date: Thu, 8 Dec 2022 10:37:42 +0100	[thread overview]
Message-ID: <035f431c-15ee-b604-79be-ec2861b45b86@kernel.org> (raw)
In-Reply-To: <em14380c7e-ee2b-45d5-8879-dde687f03b2b@eea79fc7.com>

On 08. 12. 22, 10:32, Bin Meng wrote:
>>> +#ifdef CONFIG_THUMB2_KERNEL
>>> +#define SEMIHOST_SWI    "0xab"
>>> +#else
>>> +#define SEMIHOST_SWI    "0x123456"
>>> +#endif
>>> +
>>> +static inline void smh_putc(struct uart_port *port, unsigned char c)
>>
>> 2) port is unused in all implementations. So it should be dropped.
>> 3) can you make "c" an explicit u8?
> 
> The smh_putc function signature is defined by the uart_console_write 
> helper. I don't think we can change it.

Ah. Of course. Then at least forward-declare struct uart_port here. So 
that it works also when someone decides to include the header outside 
serial.

thanks,
-- 
js
suse labs


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

WARNING: multiple messages have this Message-ID (diff)
From: Jiri Slaby <jirislaby@kernel.org>
To: Bin Meng <bmeng@tinylab.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	linux-serial <linux-serial@vger.kernel.org>
Cc: "catalin.marinas" <catalin.marinas@arm.com>,
	gregkh <gregkh@linuxfoundation.org>,
	linux <linux@armlinux.org.uk>, will <will@kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 1/3] serial: earlycon-arm-semihost: Move smh_putc() variants in respective arch's semihost.h
Date: Thu, 8 Dec 2022 10:37:42 +0100	[thread overview]
Message-ID: <035f431c-15ee-b604-79be-ec2861b45b86@kernel.org> (raw)
In-Reply-To: <em14380c7e-ee2b-45d5-8879-dde687f03b2b@eea79fc7.com>

On 08. 12. 22, 10:32, Bin Meng wrote:
>>> +#ifdef CONFIG_THUMB2_KERNEL
>>> +#define SEMIHOST_SWI    "0xab"
>>> +#else
>>> +#define SEMIHOST_SWI    "0x123456"
>>> +#endif
>>> +
>>> +static inline void smh_putc(struct uart_port *port, unsigned char c)
>>
>> 2) port is unused in all implementations. So it should be dropped.
>> 3) can you make "c" an explicit u8?
> 
> The smh_putc function signature is defined by the uart_console_write 
> helper. I don't think we can change it.

Ah. Of course. Then at least forward-declare struct uart_port here. So 
that it works also when someone decides to include the header outside 
serial.

thanks,
-- 
js
suse labs


WARNING: multiple messages have this Message-ID (diff)
From: Jiri Slaby <jirislaby@kernel.org>
To: Bin Meng <bmeng@tinylab.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	linux-serial <linux-serial@vger.kernel.org>
Cc: "catalin.marinas" <catalin.marinas@arm.com>,
	gregkh <gregkh@linuxfoundation.org>,
	linux <linux@armlinux.org.uk>, will <will@kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 1/3] serial: earlycon-arm-semihost: Move smh_putc() variants in respective arch's semihost.h
Date: Thu, 8 Dec 2022 10:37:42 +0100	[thread overview]
Message-ID: <035f431c-15ee-b604-79be-ec2861b45b86@kernel.org> (raw)
In-Reply-To: <em14380c7e-ee2b-45d5-8879-dde687f03b2b@eea79fc7.com>

On 08. 12. 22, 10:32, Bin Meng wrote:
>>> +#ifdef CONFIG_THUMB2_KERNEL
>>> +#define SEMIHOST_SWI    "0xab"
>>> +#else
>>> +#define SEMIHOST_SWI    "0x123456"
>>> +#endif
>>> +
>>> +static inline void smh_putc(struct uart_port *port, unsigned char c)
>>
>> 2) port is unused in all implementations. So it should be dropped.
>> 3) can you make "c" an explicit u8?
> 
> The smh_putc function signature is defined by the uart_console_write 
> helper. I don't think we can change it.

Ah. Of course. Then at least forward-declare struct uart_port here. So 
that it works also when someone decides to include the header outside 
serial.

thanks,
-- 
js
suse labs


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

  reply	other threads:[~2022-12-08  9:45 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-07 13:53 [PATCH v2 1/3] serial: earlycon-arm-semihost: Move smh_putc() variants in respective arch's semihost.h Bin Meng
2022-12-07 13:53 ` Bin Meng
2022-12-07 13:53 ` Bin Meng
2022-12-07 13:53 ` [PATCH v2 2/3] riscv: Implement semihost.h for earlycon semihost driver Bin Meng
2022-12-07 13:53   ` Bin Meng
2022-12-07 16:40   ` Conor Dooley
2022-12-07 16:40     ` Conor Dooley
2022-12-07 13:53 ` [PATCH v2 3/3] serial: Rename " Bin Meng
2022-12-07 13:53   ` Bin Meng
2022-12-08  6:08 ` [PATCH v2 1/3] serial: earlycon-arm-semihost: Move smh_putc() variants in respective arch's semihost.h Jiri Slaby
2022-12-08  6:08   ` Jiri Slaby
2022-12-08  6:08   ` Jiri Slaby
2022-12-08  9:32   ` Bin Meng
2022-12-08  9:32     ` Bin Meng
2022-12-08  9:32     ` Bin Meng
2022-12-08  9:37     ` Jiri Slaby [this message]
2022-12-08  9:37       ` Jiri Slaby
2022-12-08  9:37       ` Jiri Slaby

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