From a0a984e14a41bf07f6b3f563a2a8bd22c03aea3a Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Wed, 28 Feb 2018 20:51:45 +0100 Subject: [PATCH] spl: nand: sunxi: fix second case of modulo by zero error In the nand_read_buffer() step, the seed is calculated by doing a modulo by conf->nseeds which is always zero when not using the randomizer (most of SLC NANDs). This situation turns out to lead to a run time freeze with certain toolchains. Derive this seed only when the randomizer is enabled (and conf->nseeds logically not zero), exactly like what has been done before with an identical situation, see commit ea3f750c73e3 ("nand: sunxi: Fix modulo by zero error"). Signed-off-by: Miquel Raynal Acked-by: Boris Brezillon Signed-off-by: Maxime Ripard --- drivers/mtd/nand/sunxi_nand_spl.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/sunxi_nand_spl.c b/drivers/mtd/nand/sunxi_nand_spl.c index eed4472bdc..06695fc15f 100644 --- a/drivers/mtd/nand/sunxi_nand_spl.c +++ b/drivers/mtd/nand/sunxi_nand_spl.c @@ -475,11 +475,12 @@ static int nand_detect_config(struct nfc_config *conf, u32 offs, void *dest) static int nand_read_buffer(struct nfc_config *conf, uint32_t offs, unsigned int size, void *dest) { - int first_seed, page, ret; + int first_seed = 0, page, ret; size = ALIGN(size, conf->page_size); page = offs / conf->page_size; - first_seed = page % conf->nseeds; + if (conf->randomize) + first_seed = page % conf->nseeds; for (; size; size -= conf->page_size) { if (nand_load_page(conf, offs)) -- 2.39.5