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spi.c: fix potential null pointer dereference

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Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
This commit is contained in:
Alex Tereschenko
2017-05-13 17:05:09 +02:00
parent e7b0a3e809
commit 918e2b18e2
1 changed files with 2 additions and 2 deletions
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4
src/spi/spi.c
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@@ -83,7 +83,7 @@ mraa_spi_init(int bus)
syslog(LOG_ERR, "spi: requested bus above spi bus count");
return NULL;
}
if (plat->adv_func->spi_init_pre != NULL) {
if (plat->adv_func != NULL && plat->adv_func->spi_init_pre != NULL) {
if (plat->adv_func->spi_init_pre(bus) != MRAA_SUCCESS) {
return NULL;
}
@@ -124,7 +124,7 @@ mraa_spi_init(int bus)
}
mraa_spi_context dev = mraa_spi_init_raw(plat->spi_bus[bus].bus_id, plat->spi_bus[bus].slave_s);
if (plat->adv_func->spi_init_post != NULL) {
if (plat->adv_func != NULL && plat->adv_func->spi_init_post != NULL) {
mraa_result_t ret = plat->adv_func->spi_init_post(dev);
if (ret != MRAA_SUCCESS) {
free(dev);