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Message-ID: <035f431c-15ee-b604-79be-ec2861b45b86@kernel.org>
Date:   Thu, 8 Dec 2022 10:37:42 +0100
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Bin Meng <bmeng@...ylab.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        linux-serial <linux-serial@...r.kernel.org>
Cc:     "catalin.marinas" <catalin.marinas@....com>,
        gregkh <gregkh@...uxfoundation.org>,
        linux <linux@...linux.org.uk>, will <will@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 1/3] serial: earlycon-arm-semihost: Move smh_putc()
 variants in respective arch's semihost.h

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

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