From: huijin.park <huijin.park@xxxxxxxxxxx> commit 84a1c2109d23df3543d96231c4fee1757299bb1a upstream. The "params->size" is defined as "u64". And "info->sector_size" and "info->n_sectors" are defined as unsigned int and u16. Thus, u64 data might have strange data(loss data) if the result overflows an unsigned int. This patch casts "info->sector_size" to an u64. Signed-off-by: huijin.park <huijin.park@xxxxxxxxxxx> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/mtd/spi-nor/spi-nor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -2382,7 +2382,7 @@ static int spi_nor_init_params(struct sp memset(params, 0, sizeof(*params)); /* Set SPI NOR sizes. */ - params->size = info->sector_size * info->n_sectors; + params->size = (u64)info->sector_size * info->n_sectors; params->page_size = info->page_size; /* (Fast) Read settings. */
