linux-kernel - Re: [PATCH] atmel_serial: keep the platform

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1307522703.10626.9.camel@hcegtvedt.norway.atmel.com>
Date:	Wed, 08 Jun 2011 10:45:03 +0200
From:	Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>
To:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Patrice Vilchez <patrice.vilchez@...el.com>,
	Alan Cox <alan@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH] atmel_serial: keep the platform_device unchanged

On Wed, 2011-04-13 at 21:47 +0200, Jean-Christophe PLAGNIOL-VILLARD
wrote:
> specify the port num via platform_data this will allow to match the clock
> with the plaform_dev staticly

Sure this works as intended, now the platform device id is off, and at
least for my 3.0 testing it is no longer able to open the console,
unless I explicit set the id field again.

Example on NGW100 mkII I use USART instance 1 as serial console, if not
setting the platform device id to 0 (re-mapping), then I get a warning
about unable to open console.

Is you clock optimization an additional patch?

<snipp AT91 changes)

> diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
> index bfc9d07..aa677e2 100644
> --- a/arch/avr32/mach-at32ap/at32ap700x.c
> +++ b/arch/avr32/mach-at32ap/at32ap700x.c
> @@ -1014,6 +1014,7 @@ static struct platform_device *__initdata at32_usarts[4];
>  void __init at32_map_usart(unsigned int hw_id, unsigned int line, int flags)
>  {
>  	struct platform_device *pdev;
> +	struct atmel_uart_data *pdata;
>  
>  	switch (hw_id) {
>  	case 0:
> @@ -1042,7 +1043,8 @@ void __init at32_map_usart(unsigned int hw_id, unsigned int line, int flags)
>  		data->regs = (void __iomem *)pdev->resource[0].start;
>  	}
>  
> -	pdev->id = line;

AVR32 needs this to be present to work independent of which USART
peripheral the user chooses to use for console.

> +	pdata = pdev->dev.platform_data;
> +	pdata->num = portnr;
>  	at32_usarts[line] = pdev;
>  }
>  

<snipp>

-- 
Hans-Christian Egtvedt

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/