From: Sasha Levin <sasha.levin@oracle.com>
Date: Wed, 19 Mar 2014 22:24:37 +0000 (-0400)
Subject: mtd: diskonchip: mem resource name is not optional
X-Git-Tag: Ubuntu-5.13.0-19.19~20298^2~1
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=86e4bbc766b9456f583f2fc3c4f6c623b422af88;p=mirror_ubuntu-jammy-kernel.git

mtd: diskonchip: mem resource name is not optional

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@oracle.com>
Tested-by: Alexander Shiyan <shc_work@mail.ru>
Cc: <stable@vger.kernel.org> # 3.14
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---

diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index b9b4db607850..f68a7bccecdc 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) {