From e7d0a7664fc63e57a9fb7de86bbb0b1874e53c7b Mon Sep 17 00:00:00 2001
From: Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
Date: Fri, 28 Nov 2014 01:05:07 +0100
Subject: [PATCH] lint: fix possible nullptr deref in *pwr

---
 drivers/nrf24l01p/nrf24l01p.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/nrf24l01p/nrf24l01p.c b/drivers/nrf24l01p/nrf24l01p.c
index ade1589e51..82db4e8dd5 100644
--- a/drivers/nrf24l01p/nrf24l01p.c
+++ b/drivers/nrf24l01p/nrf24l01p.c
@@ -617,6 +617,10 @@ int nrf24l01p_set_power(nrf24l01p_t *dev, int *pwr)
 
     nrf24l01p_read_reg(dev, REG_RF_SETUP, &rf_setup);
 
+    if (pwr == NULL) {
+        return -1;
+    }
+
     if (*pwr >= -3) {
         rf_setup &= ~(3 << 1);
         rf_setup |= (NRF24L01P_PWR_0DBM << 1);