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

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Date:	Mon, 31 Mar 2014 18:46:27 -0700
From:	Brian Norris <computersforpeace@...il.com>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	Alexander Shiyan <shc_work@...l.ru>, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: diskonchip: mem resource name is not optional

On Sat, Mar 29, 2014 at 08:31:52PM -0400, Sasha Levin wrote:
> 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?

Pushed to l2-mtd.git, marked for stable >= 3.14.

Brian
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