openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

spi: loopback-test: write rx pattern also when running without tx_buf 

Currently the rx_buf does not get set with the
SPI_TEST_PATTERN_UNWRITTEN when tx_buf == NULL in the transfer.

Reorder code so that it gets done also under this specific condition.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Martin Sperl 2015-12-22 18:03:21 +00:00 committed by Mark Brown
parent 739f3e9291
commit e6520a3c88
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/spi/spi-loopback-test.c
View File

@ -591,6 +591,10 @@ static int spi_test_fill_tx(struct spi_device *spi, struct spi_test *test)
/* fill all transfers with the pattern requested */ /* fill all transfers with the pattern requested */
for (i = 0; i < test->transfer_count; i++) { for (i = 0; i < test->transfer_count; i++) {
/* fill rx_buf with SPI_TEST_PATTERN_UNWRITTEN */
if (xfers[i].rx_buf)
memset(xfers[i].rx_buf, SPI_TEST_PATTERN_UNWRITTEN,
xfers[i].len);
/* if tx_buf is NULL then skip */ /* if tx_buf is NULL then skip */
tx_buf = (u8 *)xfers[i].tx_buf; tx_buf = (u8 *)xfers[i].tx_buf;
if (!tx_buf) if (!tx_buf)
@ -648,10 +652,6 @@ static int spi_test_fill_tx(struct spi_device *spi, struct spi_test *test)
return -EINVAL; return -EINVAL;
} }
} }
/* fill rx_buf with SPI_TEST_PATTERN_UNWRITTEN */
if (xfers[i].rx_buf)
memset(xfers[i].rx_buf, SPI_TEST_PATTERN_UNWRITTEN,
xfers[i].len);
} }
return 0; return 0;