| Message ID | 20220819060801.10443-18-jinpu.wang@ionos.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
Hello Jack, first of all: thank you for this patch! On Fri, Aug 19, 2022 at 8:08 AM Jack Wang <jinpu.wang@ionos.com> wrote: [...] > @@ -388,7 +388,7 @@ static int meson_mx_sdhc_map_dma(struct mmc_host *mmc, struct mmc_request *mrq) > > dma_len = dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, Does it also make sense to change the type of the dma_len variable from (signed) int to "unsigned int" (a few lines above)? Best regards, Martin
Hi Martin, On Sat, Aug 20, 2022 at 7:26 PM Martin Blumenstingl <martin.blumenstingl@googlemail.com> wrote: > > Hello Jack, > > first of all: thank you for this patch! welcome. > > On Fri, Aug 19, 2022 at 8:08 AM Jack Wang <jinpu.wang@ionos.com> wrote: > [...] > > @@ -388,7 +388,7 @@ static int meson_mx_sdhc_map_dma(struct mmc_host *mmc, struct mmc_request *mrq) > > > > dma_len = dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, > Does it also make sense to change the type of the dma_len variable > from (signed) int to "unsigned int" (a few lines above)? I double checked, it seems a good idea, I will do it in v2. > > > Best regards, > Martin Thx!
diff --git a/drivers/mmc/host/meson-mx-sdhc-mmc.c b/drivers/mmc/host/meson-mx-sdhc-mmc.c index e92e63cb5641..b32364f20c32 100644 --- a/drivers/mmc/host/meson-mx-sdhc-mmc.c +++ b/drivers/mmc/host/meson-mx-sdhc-mmc.c @@ -388,7 +388,7 @@ static int meson_mx_sdhc_map_dma(struct mmc_host *mmc, struct mmc_request *mrq) 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; }
dma_map_sg return 0 on error. Cc: Ulf Hansson <ulf.hansson@linaro.org> 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> Cc: linux-mmc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Jack Wang <jinpu.wang@ionos.com> --- drivers/mmc/host/meson-mx-sdhc-mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)