linux-kernel - Re: [PATCH] mtd: diskonchip: mem resource name is not optional

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Date:	Sat, 29 Mar 2014 20:31:52 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Alexander Shiyan <shc_work@...l.ru>
CC:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
	computersforpeace@...il.com
Subject: Re: [PATCH] mtd: diskonchip: mem resource name is not optional

On 03/22/2014 04:39 AM, Alexander Shiyan wrote:
> Wed, 19 Mar 2014 18:24:37 -0400 от Sasha Levin <sasha.levin@...cle.com>:
>> Passing a name to request_mem_region() isn't optional and can't just
>> be NULL. Passing NULL causes a NULL ptr deref later in the boot
>> process.
>>
>> Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
>> ---
>>   drivers/mtd/nand/diskonchip.c |    2 +-
>>   1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
>> index b9b4db6..f68a7bc 100644
>> --- a/drivers/mtd/nand/diskonchip.c
>> +++ b/drivers/mtd/nand/diskonchip.c
>> @@ -1439,7 +1439,7 @@ static int __init doc_probe(unsigned long physadr)
>>   	int reg, len, numchips;
>>   	int ret = 0;
>>
>> -	if (!request_mem_region(physadr, DOC_IOREMAP_LEN, NULL))
>> +	if (!request_mem_region(physadr, DOC_IOREMAP_LEN, "DiskOnChip"))
>>   		return -EBUSY;
>>   	virtadr = ioremap(physadr, DOC_IOREMAP_LEN);
>>   	if (!virtadr) {
>> --
>
> Tested-by: Alexander Shiyan <shc_work@...l.ru>

It seems that no one pulled this patch anywhere. It fixes a straightforward
boot failure on boot when diskonchip is enabled in the config.

Someone grab it please?


Thanks,
Sasha

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