From 8827f85e3010a26b18ab7401e535c80b0d023ce0 Mon Sep 17 00:00:00 2001 From: Jack Wang Date: Thu, 25 Aug 2022 09:40:08 +0200 Subject: mmc: jz4740_mmc: Fix error check for dma_map_sg dma_map_sg return 0 on error. Signed-off-by: Jack Wang Acked-by: Paul Cercueil Link: https://lore.kernel.org/r/20220825074008.33349-3-jinpu.wang@ionos.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/jz4740_mmc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/mmc') diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index b1d563b2ed1b..dc2db9c185ea 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -298,7 +298,7 @@ static int jz4740_mmc_prepare_dma_data(struct jz4740_mmc_host *host, { struct dma_chan *chan = jz4740_mmc_get_dma_chan(host, data); enum dma_data_direction dir = mmc_get_dma_dir(data); - int sg_count; + unsigned int sg_count; if (data->host_cookie == COOKIE_PREMAPPED) return data->sg_count; @@ -308,7 +308,7 @@ static int jz4740_mmc_prepare_dma_data(struct jz4740_mmc_host *host, data->sg_len, dir); - if (sg_count <= 0) { + if (!sg_count) { dev_err(mmc_dev(host->mmc), "Failed to map scatterlist for DMA operation\n"); return -EINVAL; -- cgit v1.2.3