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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 <narmstrong@baylibre.com>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Link: https://lore.kernel.org/r/20220825074008.33349-2-jinpu.wang@ionos.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Jack Wang 2022-08-25 09:40:07 +02:00 committed by Ulf Hansson
parent 5cbedf5260
commit f7865ad8b4
1 changed files with 2 additions and 2 deletions
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4
drivers/mmc/host/meson-mx-sdhc-mmc.c
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@ -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;
}