mtd: rawnand: meson: use a void pointer for meson_nfc_dma_buffer_setup

This simplifies the code because it gets rid of the casts to an
u8-pointer when passing "info_buf" from struct meson_nfc_nand_chip.
Also it gets rid of the cast of the u8 databuf pointer to a void
pointer.
The logic inside meson_nfc_dma_buffer_setup() doesn't care about the
pointer types themselves because it only passes them to dma_map_single
which accepts a void pointer.

No functional changes.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by:Liang Yang <liang.yang@amlogic.com>
Acked-by: Liang Yang <liang.yang@amlogic.com>
Tested-by:Liang Yang <liang.yang@amlogic.com>
Acked-by: Liang Yang <liang.yang@amlogic.com>
Tested-by:Liang Yang <liang.yang@amlogic.com>
Acked-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index 9a6023638101a09e688896d6c0c27b1fa98fa1be..57cc4bd3f66501c76bcc15aa77729d6f2cdbca13 100644 (file)
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -470,15 +470,15 @@ static int meson_nfc_ecc_correct(struct nand_chip *nand, u32 *bitflips,
        return ret;
 }
 
-static int meson_nfc_dma_buffer_setup(struct nand_chip *nand, u8 *databuf,
-                                     int datalen, u8 *infobuf, int infolen,
+static int meson_nfc_dma_buffer_setup(struct nand_chip *nand, void *databuf,
+                                     int datalen, void *infobuf, int infolen,
                                      enum dma_data_direction dir)
 {
        struct meson_nfc *nfc = nand_get_controller_data(nand);
        u32 cmd;
        int ret = 0;
 
-       nfc->daddr = dma_map_single(nfc->dev, (void *)databuf, datalen, dir);
+       nfc->daddr = dma_map_single(nfc->dev, databuf, datalen, dir);
        ret = dma_mapping_error(nfc->dev, nfc->daddr);
        if (ret) {
                dev_err(nfc->dev, "DMA mapping error\n");
@@ -645,7 +645,7 @@ static int meson_nfc_write_page_sub(struct nand_chip *nand,
                return ret;
 
        ret = meson_nfc_dma_buffer_setup(nand, meson_chip->data_buf,
-                                        data_len, (u8 *)meson_chip->info_buf,
+                                        data_len, meson_chip->info_buf,
                                         info_len, DMA_TO_DEVICE);
        if (ret)
                return ret;
@@ -729,7 +729,7 @@ static int meson_nfc_read_page_sub(struct nand_chip *nand,
                return ret;
 
        ret = meson_nfc_dma_buffer_setup(nand, meson_chip->data_buf,
-                                        data_len, (u8 *)meson_chip->info_buf,
+                                        data_len, meson_chip->info_buf,
                                         info_len, DMA_FROM_DEVICE);
        if (ret)
                return ret;