[PATCH 2/3] spi: mediatek: remove redundant clock in prepare_hardware/unprepare_hardware
Leilk Liu
leilk.liu at mediatek.com
Tue Aug 18 20:37:57 PDT 2015
clock in prepare_hardware/unprepare_hardware is redundant
with pm_runtime, so remove them.
Signed-off-by: Leilk Liu <leilk.liu at mediatek.com>
---
drivers/spi/spi-mt65xx.c | 17 -----------------
1 file changed, 17 deletions(-)
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 814bca4..1c2b215 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -181,13 +181,6 @@ static int mtk_spi_prepare_hardware(struct spi_master *master)
struct spi_transfer *trans;
struct mtk_spi *mdata = spi_master_get_devdata(master);
struct spi_message *msg = master->cur_msg;
- int ret;
-
- ret = clk_prepare_enable(mdata->spi_clk);
- if (ret < 0) {
- dev_err(&master->dev, "failed to enable clock (%d)\n", ret);
- return ret;
- }
trans = list_first_entry(&msg->transfers, struct spi_transfer,
transfer_list);
@@ -196,15 +189,6 @@ static int mtk_spi_prepare_hardware(struct spi_master *master)
mtk_spi_reset(mdata);
}
- return ret;
-}
-
-static int mtk_spi_unprepare_hardware(struct spi_master *master)
-{
- struct mtk_spi *mdata = spi_master_get_devdata(master);
-
- clk_disable_unprepare(mdata->spi_clk);
-
return 0;
}
@@ -537,7 +521,6 @@ static int mtk_spi_probe(struct platform_device *pdev)
master->set_cs = mtk_spi_set_cs;
master->prepare_transfer_hardware = mtk_spi_prepare_hardware;
- master->unprepare_transfer_hardware = mtk_spi_unprepare_hardware;
master->prepare_message = mtk_spi_prepare_message;
master->transfer_one = mtk_spi_transfer_one;
master->can_dma = mtk_spi_can_dma;
--
1.8.1.1.dirty
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