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| author | Brian Norris <computersforpeace@gmail.com> | 2015-05-18 10:50:43 -0700 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-05-18 10:50:43 -0700 |
| commit | 2ddd8db90a22fc4ac708cd8497ed5e46b7f24d49 (patch) | |
| tree | 10924a4ec59c9b2d114c2287bd35e6debc72595f /drivers/spi/spi-bitbang.c | |
| parent | 02787daadbdad80c9c79487b5ef8284aff734a7b (diff) | |
| parent | e26081808edadfd257c6c9d81014e3b25e9a6118 (diff) | |
Merge tag 'v4.1-rc4' into MTD's -next
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 5ef6638d5e8a..840a4984d365 100644 --- a/drivers/spi/spi-bitbang.c +++ b/drivers/spi/spi-bitbang.c @@ -180,7 +180,6 @@ 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); @@ -197,9 +196,11 @@ 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); @@ -295,9 +296,11 @@ 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; } |