spi/tegra20-sflash: Use core runtime PM

Signed-off-by: Mark Brown <broonie@linaro.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 1 insertions, 25 deletions

diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c
index f871c4ee6ad7..1d814dc6e000 100644
--- a/drivers/spi/spi-tegra20-sflash.c
+++ b/drivers/spi/spi-tegra20-sflash.c
@@ -325,20 +325,6 @@ static int tegra_sflash_setup(struct spi_device *spi)
         return 0;
 }
 
-static int tegra_sflash_prepare_transfer(struct spi_master *spi)
-{
-        struct tegra_sflash_data *tsd = spi_master_get_devdata(spi);
-        int ret;
-
-        ret = pm_runtime_get_sync(tsd->dev);
-        if (ret < 0) {
-                dev_err(tsd->dev, "runtime PM get failed: %d\n", ret);
-                return ret;
-        }
-
-        return ret;
-}
-
 static int tegra_sflash_transfer_one_message(struct spi_master *master,
                         struct spi_message *msg)
 {
@@ -391,15 +377,6 @@ exit:
         return ret;
 }
 
-static int tegra_sflash_unprepare_transfer(struct spi_master *spi)
-{
-        struct tegra_sflash_data *tsd = spi_master_get_devdata(spi);
-
-        pm_runtime_put(tsd->dev);
-
-        return 0;
-}
-
 static irqreturn_t handle_cpu_based_xfer(struct tegra_sflash_data *tsd)
 {
         struct spi_transfer *t = tsd->curr_xfer;
@@ -492,9 +469,8 @@ static int tegra_sflash_probe(struct platform_device *pdev)
         /* the spi->mode bits understood by this driver: */
         master->mode_bits = SPI_CPOL | SPI_CPHA;
         master->setup = tegra_sflash_setup;
-        master->prepare_transfer_hardware = tegra_sflash_prepare_transfer;
         master->transfer_one_message = tegra_sflash_transfer_one_message;
-        master->unprepare_transfer_hardware = tegra_sflash_unprepare_transfer;
+        master->auto_runtime_pm = true;
         master->num_chipselect = MAX_CHIP_SELECT;
         master->bus_num = -1;