From 918e2b18e2ac3428865a6228cb184c23124973a2 Mon Sep 17 00:00:00 2001 From: Alex Tereschenko Date: Sat, 13 May 2017 17:05:09 +0200 Subject: [PATCH] spi.c: fix potential null pointer dereference Signed-off-by: Alex Tereschenko --- src/spi/spi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/spi/spi.c b/src/spi/spi.c index 09fe8b0..a0c21e0 100644 --- a/src/spi/spi.c +++ b/src/spi/spi.c @@ -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);