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| author | Stefano Babic <sbabic@denx.de> | 2014-07-16 08:51:30 +0200 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2014-07-16 08:51:30 +0200 |
| commit | dab5e3469d294a4e1ffed8407d296a78e02cc01f (patch) | |
| tree | c6378034591210b3142ca3add806d52c6ea22b3b /drivers/spi/soft_spi.c | |
| parent | 14a1613140519a8d0a88e6054c302a8cb3e067a5 (diff) | |
| parent | 524123a70761110c5cf3ccc5f52f6d4da071b959 (diff) | |
| download | u-boot-imx-dab5e3469d294a4e1ffed8407d296a78e02cc01f.zip u-boot-imx-dab5e3469d294a4e1ffed8407d296a78e02cc01f.tar.gz u-boot-imx-dab5e3469d294a4e1ffed8407d296a78e02cc01f.tar.bz2 | |
Merge branch 'master' of git://git.denx.de/u-boot
Signed-off-by: Stefano Babic <sbabic@denx.de>
Conflicts:
boards.cfg
Diffstat (limited to 'drivers/spi/soft_spi.c')
| -rw-r--r-- | drivers/spi/soft_spi.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/spi/soft_spi.c b/drivers/spi/soft_spi.c index 5d22351..c969be3 100644 --- a/drivers/spi/soft_spi.c +++ b/drivers/spi/soft_spi.c @@ -136,10 +136,14 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, /* * Check if it is time to work on a new byte. */ - if((j % 8) == 0) { - tmpdout = *txd++; + if ((j % 8) == 0) { + if (txd) + tmpdout = *txd++; + else + tmpdout = 0; if(j != 0) { - *rxd++ = tmpdin; + if (rxd) + *rxd++ = tmpdin; } tmpdin = 0; } @@ -164,9 +168,11 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, * bits over to left-justify them. Then store the last byte * read in. */ - if((bitlen % 8) != 0) - tmpdin <<= 8 - (bitlen % 8); - *rxd++ = tmpdin; + if (rxd) { + if ((bitlen % 8) != 0) + tmpdin <<= 8 - (bitlen % 8); + *rxd++ = tmpdin; + } if (flags & SPI_XFER_END) spi_cs_deactivate(slave); |