From 0eb8618bd07533f423fed47399a0d6387bfe7cac Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 1 Jun 2015 23:10:53 +0200 Subject: [PATCH] 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 Signed-off-by: Brian Norris --- drivers/mtd/devices/docg3.c | 10 ++++++++-- 1 file 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); -- 2.30.2