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Commit 08850fa9 authored by Axel Lin's avatar Axel Lin Committed by Mark Brown
Browse files

spi: s3c24xx: Convert to let spi core validate bits_per_word 



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

Signed-off-by: default avatarAxel Lin <axel.lin@ingics.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 38dbfb59

drivers/spi/spi-s3c24xx.c

+1 −10
Original line number Diff line number Diff line
@@ -123,25 +123,15 @@ static int s3c24xx_spi_update_state(struct spi_device *spi, 
{

	struct s3c24xx_spi *hw = to_hw(spi);

	struct s3c24xx_spi_devstate *cs = spi->controller_state;

	unsigned int bpw;

	unsigned int hz;

	unsigned int div;

	unsigned long clk;



	bpw = t ? t->bits_per_word : spi->bits_per_word;

	hz  = t ? t->speed_hz : spi->max_speed_hz;



	if (!bpw)

		bpw = 8;



	if (!hz)

		hz = spi->max_speed_hz;



	if (bpw != 8) {

		dev_err(&spi->dev, "invalid bits-per-word (%d)\n", bpw);

		return -EINVAL;

	}



	if (spi->mode != cs->mode) {

		u8 spcon = SPCON_DEFAULT | S3C2410_SPCON_ENSCK;
@@ -544,6 +534,7 @@ static int s3c24xx_spi_probe(struct platform_device *pdev) 


	master->num_chipselect = hw->pdata->num_cs;

	master->bus_num = pdata->bus_num;

	master->bits_per_word_mask = SPI_BPW_MASK(8);



	/* setup the state for the bitbang driver */