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uart: add a null pointer check before dereferencing plat->adv_func

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Signed-off-by: Tapani Utriainen <tapani@technexion.com>
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
This commit is contained in:
Tapani Utriainen
2017-05-11 18:42:04 +08:00
committed by Alex Tereschenko
parent 8ddbcde84e
commit e7b0a3e809
1 changed files with 1 additions and 1 deletions
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src/uart/uart.c
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@@ -142,7 +142,7 @@ mraa_uart_init(int index)
return NULL; return NULL;
} }
if (plat->adv_func->uart_init_pre != NULL) { if (plat->adv_func != NULL && plat->adv_func->uart_init_pre != NULL) {
if (plat->adv_func->uart_init_pre(index) != MRAA_SUCCESS) { if (plat->adv_func->uart_init_pre(index) != MRAA_SUCCESS) {
syslog(LOG_ERR, "uart%i: init: failure in pre-init platform hook", index); syslog(LOG_ERR, "uart%i: init: failure in pre-init platform hook", index);
return NULL; return NULL;