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authorRichard Weinberger <richard@nod.at>2015-06-01 23:10:53 +0200
committerBrian Norris <computersforpeace@gmail.com>2015-06-16 18:58:47 -0700
commit0eb8618bd07533f423fed47399a0d6387bfe7cac (patch)
tree1dd6c19cc689b430f1f7e7f633850aab71bcd1d8 /drivers/mtd
parent45c2ebd702a468d5037cf16aa4f8ea8d67776f6a (diff)
downloadlinux-0eb8618bd07533f423fed47399a0d6387bfe7cac.tar.bz2
mtd: docg3: Fix kasprintf() usage
kasprintf() does a dynamic memory allocation and can fail. We have to handle that case. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/devices/docg3.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 486936bf41d5..5e67b4acde78 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1815,7 +1815,7 @@ static void doc_dbg_unregister(struct docg3 *docg3)
* @chip_id: The chip ID of the supported chip
* @mtd: The structure to fill
*/
-static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
+static int __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
{
struct docg3 *docg3 = mtd->priv;
int cfg;
@@ -1828,6 +1828,8 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
case DOC_CHIPID_G3:
mtd->name = kasprintf(GFP_KERNEL, "docg3.%d",
docg3->device_id);
+ if (!mtd->name)
+ return -ENOMEM;
docg3->max_block = 2047;
break;
}
@@ -1850,6 +1852,8 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
mtd->_block_isbad = doc_block_isbad;
mtd->ecclayout = &docg3_oobinfo;
mtd->ecc_strength = DOC_ECC_BCH_T;
+
+ return 0;
}
/**
@@ -1913,7 +1917,9 @@ doc_probe_device(struct docg3_cascade *cascade, int floor, struct device *dev)
goto nomem4;
}
- doc_set_driver_info(chip_id, mtd);
+ ret = doc_set_driver_info(chip_id, mtd);
+ if (ret)
+ goto nomem4;
doc_hamming_ecc_init(docg3, DOC_LAYOUT_OOB_PAGEINFO_SZ);
doc_reload_bbt(docg3);