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Subject[PATCH 09/10] spi: sh-msiof: Convert to let spi core validate xfer->bits_per_word
Date
From: Geert Uytterhoeven <geert+renesas@linux-m68k.org>

Set bits_per_word_mask so the spi core will reject transfers that attempt
to use an unsupported bits_per_word value.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
---
drivers/spi/spi-sh-msiof.c | 19 ++-----------------
1 file changed, 2 insertions(+), 17 deletions(-)

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index 7add4be37987..bd300fcb7116 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -441,22 +441,6 @@ static u32 sh_msiof_spi_hz(struct spi_device *spi, struct spi_transfer *t)
return hz;
}

-static int sh_msiof_spi_setup_transfer(struct spi_device *spi,
- struct spi_transfer *t)
-{
- int bits;
-
- /* noting to check hz values against since parent clock is disabled */
-
- bits = sh_msiof_spi_bits(spi, t);
- if (bits < 8)
- return -EINVAL;
- if (bits > 32)
- return -EINVAL;
-
- return spi_bitbang_setup_transfer(spi, t);
-}
-
static int sh_msiof_spi_setup(struct spi_device *spi)
{
struct device_node *np = spi->master->dev.of_node;
@@ -822,10 +806,11 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
master->cleanup = spi_bitbang_cleanup;
master->prepare_message = sh_msiof_prepare_message;
master->unprepare_message = sh_msiof_unprepare_message;
+ master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32);

p->bitbang.master = master;
p->bitbang.chipselect = sh_msiof_spi_chipselect;
- p->bitbang.setup_transfer = sh_msiof_spi_setup_transfer;
+ p->bitbang.setup_transfer = spi_bitbang_setup_transfer;
p->bitbang.txrx_bufs = sh_msiof_spi_txrx;
p->bitbang.txrx_word[SPI_MODE_0] = sh_msiof_spi_txrx_word;
p->bitbang.txrx_word[SPI_MODE_1] = sh_msiof_spi_txrx_word;
--
1.7.9.5


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