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atcspi200: avoid possible NULL dereference

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Check if ns before and not after dereferencing it.

Indicated by cppcheck.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2018-01-31 01:05:54 +01:00 • committed by Tom Rini
parent 8639e34d2c
commit 923837e159
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/atcspi200_spi.c
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@ -297,6 +297,8 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
return NULL;
ns = spi_alloc_slave(struct nds_spi_slave, bus, cs);
if (!ns)
return NULL;
switch (bus) {
case SPI0_BUS:
@ -316,8 +318,6 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
ns->to = SPI_TIMEOUT;
ns->max_transfer_length = MAX_TRANSFER_LEN;
ns->slave.max_write_size = MAX_TRANSFER_LEN;
if (!ns)
return NULL;
return &ns->slave;
}