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Message-Id: <1444683671-15570-2-git-send-email-fcooper@ti.com> Date: Mon, 12 Oct 2015 16:01:11 -0500 From: Franklin S Cooper Jr <fcooper@...com> To: linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org, broonie@...nel.org, nsekhar@...com, ssantosh@...nel.org, iivanov@...sol.com, m-karicheri2@...com Cc: Franklin S Cooper Jr <fcooper@...com> Subject: [RFC][PATCH] spi: Setup the master controller driver before setting the chipselect Some devices depend on the master controller driver setup function being called before calling any chipselect functions. Insure that this is done otherwise uninitialized structures may be accessed causing a kernel panic. Signed-off-by: Franklin S Cooper Jr <fcooper@...com> --- drivers/spi/spi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 38006cc..9374d82 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -2053,11 +2053,11 @@ int spi_setup(struct spi_device *spi) if (!spi->max_speed_hz) spi->max_speed_hz = spi->master->max_speed_hz; - spi_set_cs(spi, false); - if (spi->master->setup) status = spi->master->setup(spi); + spi_set_cs(spi, false); + dev_dbg(&spi->dev, "setup mode %d, %s%s%s%s%u bits/w, %u Hz max --> %d\n", (int) (spi->mode & (SPI_CPOL | SPI_CPHA)), (spi->mode & SPI_CS_HIGH) ? "cs_high, " : "", -- 2.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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