linux-kernel - Re: [PATCH] ARM: msm: Update the references to DEBUG_MSM

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Date:	Mon, 26 May 2014 18:44:53 +0300
From:	Georgi Djakov <gdjakov@...sol.com>
To:	Paul Bolle <pebolle@...cali.nl>
CC:	galak@...eaurora.org, iivanov@...sol.com, arm@...nel.org,
	khilman@...aro.org, arnd@...db.de, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org, olof@...om.net,
	davidb@...eaurora.org, linux-arm-kernel@...ts.infradead.org,
	agross@...eaurora.org, linus.walleij@...aro.org,
	srinivas.kandagatla@...aro.org
Subject: Re: [PATCH] ARM: msm: Update the references to DEBUG_MSM_UARTx

On 05/26/2014 05:58 PM, Paul Bolle wrote:
> Hi Georgi,

Hi Paul,

>
> On Mon, 2014-05-26 at 16:58 +0300, Georgi Djakov wrote:
>> The Kconfig options DEBUG_MSM_UART1, DEBUG_MSM_UART2 and DEBUG_MSM_UART3
>> are removed, but they are still referenced in arch/arm/mach-msm/io.c
>> Fix this by updating the reference to the new Kconfig option.
>>
>> Reported-by: Paul Bolle <pebolle@...cali.nl>
>> Signed-off-by: Georgi Djakov <gdjakov@...sol.com>
>> ---
>>   arch/arm/mach-msm/io.c |    6 ++----
>>   1 file changed, 2 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
>> index 34e0947..b042dca 100644
>> --- a/arch/arm/mach-msm/io.c
>> +++ b/arch/arm/mach-msm/io.c
>> @@ -57,8 +57,7 @@ static struct map_desc msm_io_desc[] __initdata = {
>>   		.length =   MSM_SHARED_RAM_SIZE,
>>   		.type =     MT_DEVICE,
>>   	},
>> -#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
>> -		defined(CONFIG_DEBUG_MSM_UART3)
>> +#if defined(CONFIG_DEBUG_MSM_UART)
>>   	{
>>   		/* Must be last: virtual and pfn filled in by debug_ll_addr() */
>>   		.length = SZ_4K,
>> @@ -76,8 +75,7 @@ void __init msm_map_common_io(void)
>>   	 * pages are peripheral interface or not.
>>   	 */
>>   	asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
>> -#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
>> -		defined(CONFIG_DEBUG_MSM_UART3)
>> +#if defined(CONFIG_DEBUG_MSM_UART)
>>   #ifdef CONFIG_MMU
>>   	debug_ll_addr(&msm_io_desc[size - 1].pfn,
>>   		      &msm_io_desc[size - 1].virtual);
>
> Should I now redo https://lkml.org/lkml/2014/5/15/249 by making the
> (outdated) checks in arch/arm/mach-msm/board-trout.c and
> arch/arm/mach-msm/board-trout-gpio.c also use CONFIG_DEBUG_MSM_UART?
>

Hm, not exactly. It seems that this board has multiple UARTs that can be 
used for debug, so we should also check for the UART PHYS address. I 
will prepare a patch to fix this too.

Thanks,
Georgi
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