mmc: mvsdio: Fix dma_unmap_sg() nents value

commit 8ab2f1c35669bff7d7ed1bb16bf5cc989b3e2e17 upstream.

The dma_unmap_sg() functions should be called with the same nents as the
dma_map_sg(), not the value the map function returned.

Fixes: 236caa7cc351 ("mmc: SDIO driver for Marvell SoCs")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index 12df4ff9eeee5319dcc9ed1dffd02001023c8dae..878fda43b7f73b8d0448c9e3b83b6cd8cd7dc2d6 100644 (file)
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -292,7 +292,7 @@ static u32 mvsd_finish_data(struct mvsd_host *host, struct mmc_data *data,
                host->pio_ptr = NULL;
                host->pio_size = 0;
        } else {
-               dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_frags,
+               dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
                             mmc_get_dma_dir(data));
        }