diff options
author | Kevin Hilman <khilman@linaro.org> | 2015-07-06 10:23:00 -0700 |
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committer | Kevin Hilman <khilman@linaro.org> | 2015-07-06 10:23:00 -0700 |
commit | 6a47a12fee7d1e842369798dc8134759561d5e75 (patch) | |
tree | 14fec57680c2fbc8dc05376b5c14bf57996dc86f /drivers/spi/spi-bitbang.c | |
parent | 91760bceff1f3f5860ff49c14194567f972352e6 (diff) | |
parent | ea5dd38e93b3bec3427e5d3eef000bbf5d637e76 (diff) |
Merge tag 'v3.18.17' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into linux-linaro-lsk-v3.18lsk-v3.18-15.07
Linux 3.18.17
Diffstat (limited to 'drivers/spi/spi-bitbang.c')
-rw-r--r-- | drivers/spi/spi-bitbang.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c index dc7d2c2d643e..fecdda270c5d 100644 --- a/drivers/spi/spi-bitbang.c +++ b/drivers/spi/spi-bitbang.c @@ -184,7 +184,6 @@ int spi_bitbang_setup(struct spi_device *spi) { struct spi_bitbang_cs *cs = spi->controller_state; struct spi_bitbang *bitbang; - int retval; unsigned long flags; bitbang = spi_master_get_devdata(spi->master); @@ -201,9 +200,11 @@ int spi_bitbang_setup(struct spi_device *spi) if (!cs->txrx_word) return -EINVAL; - retval = bitbang->setup_transfer(spi, NULL); - if (retval < 0) - return retval; + if (bitbang->setup_transfer) { + int retval = bitbang->setup_transfer(spi, NULL); + if (retval < 0) + return retval; + } dev_dbg(&spi->dev, "%s, %u nsec/bit\n", __func__, 2 * cs->nsecs); @@ -299,9 +300,11 @@ static int spi_bitbang_transfer_one(struct spi_master *master, /* init (-1) or override (1) transfer params */ if (do_setup != 0) { - status = bitbang->setup_transfer(spi, t); - if (status < 0) - break; + if (bitbang->setup_transfer) { + status = bitbang->setup_transfer(spi, t); + if (status < 0) + break; + } if (do_setup == -1) do_setup = 0; } |