From f7865ad8b4003ec75faf4a69363a804851b68c7d Mon Sep 17 00:00:00 2001 From: Jack Wang Date: Thu, 25 Aug 2022 09:40:07 +0200 Subject: [PATCH] mmc: meson-mx-sdhc: Fix error check for dma_map_sg dma_map_sg return 0 on error, also change the type for dma_len from int to unsigned int. Cc: Neil Armstrong Cc: Kevin Hilman Cc: Jerome Brunet Cc: Martin Blumenstingl Signed-off-by: Jack Wang Link: https://lore.kernel.org/r/20220825074008.33349-2-jinpu.wang@ionos.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/meson-mx-sdhc-mmc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/meson-mx-sdhc-mmc.c b/drivers/mmc/host/meson-mx-sdhc-mmc.c index e92e63cb5641..da85c2f2acb8 100644 --- a/drivers/mmc/host/meson-mx-sdhc-mmc.c +++ b/drivers/mmc/host/meson-mx-sdhc-mmc.c @@ -381,14 +381,14 @@ static void meson_mx_sdhc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) static int meson_mx_sdhc_map_dma(struct mmc_host *mmc, struct mmc_request *mrq) { struct mmc_data *data = mrq->data; - int dma_len; + unsigned int dma_len; if (!data) return 0; dma_len = dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, mmc_get_dma_dir(data)); - if (dma_len <= 0) { + if (!dma_len) { dev_err(mmc_dev(mmc), "dma_map_sg failed\n"); return -ENOMEM; }