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mtd: rawnand: nandsim: Replace overflow check with kzalloc to single kcalloc

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Instead of self-checking overflow and allocating an array of specific size
by counting the total required space handy, we already have existed kernel
API which responses for all these works.

Signed-off-by: RinHizakura <s921975628@gmail.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211225100607.118932-1-s921975628@gmail.com
This commit is contained in:
RinHizakura 2021-12-25 18:06:07 +08:00 committed by Miquel Raynal
parent e783362eb5
commit e0a9ddd5d9
1 changed files with 1 additions and 8 deletions
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9
drivers/mtd/nand/raw/nandsim.c
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@ -979,15 +979,8 @@ static int ns_read_error(unsigned int page_no)
static int ns_setup_wear_reporting(struct mtd_info *mtd)
{
size_t mem;
wear_eb_count = div_u64(mtd->size, mtd->erasesize);
mem = wear_eb_count * sizeof(unsigned long);
if (mem / sizeof(unsigned long) != wear_eb_count) {
NS_ERR("Too many erase blocks for wear reporting\n");
return -ENOMEM;
}
erase_block_wear = kzalloc(mem, GFP_KERNEL);
erase_block_wear = kcalloc(wear_eb_count, sizeof(unsigned long), GFP_KERNEL);
if (!erase_block_wear) {
NS_ERR("Too many erase blocks for wear reporting\n");
return -ENOMEM;