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authorAmir Hammad <amir.hammad@hotmail.com>2016-09-08 06:27:35 +0200
committerAmir Hammad <amir.hammad@hotmail.com>2016-09-11 13:31:47 +0200
commit1d1b697bc6b13b5db1594c3dafe5452b6b2c1668 (patch)
tree5bf0ea2ffbf6536ce67d3e5b26d2b65e7c6a69ce /src/usbh_driver_ac_midi.c
parentbc8dd60b2ebc311427c751937df464ba58b12c42 (diff)
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use NULL instead of 0 for assigning null pointer
Signed-off-by: Amir Hammad <amir.hammad@hotmail.com>
Diffstat (limited to 'src/usbh_driver_ac_midi.c')
-rw-r--r--src/usbh_driver_ac_midi.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/usbh_driver_ac_midi.c b/src/usbh_driver_ac_midi.c
index 0a747f7..9d139d5 100644
--- a/src/usbh_driver_ac_midi.c
+++ b/src/usbh_driver_ac_midi.c
@@ -24,6 +24,8 @@
#include "usbh_driver_ac_midi_private.h"
#include "usart_helpers.h"
+#include <stddef.h>
+
#include <libopencm3/usb/midi.h>
#include <libopencm3/usb/audio.h>
#include <libopencm3/usb/usbstd.h>
@@ -35,7 +37,7 @@ static void poll(void *drvdata, uint32_t tflp);
static void remove(void *drvdata);
static midi_device_t midi_device[USBH_AC_MIDI_MAX_DEVICES];
-static const midi_config_t *midi_config = 0;
+static const midi_config_t *midi_config = NULL;
static bool initialized = false;
static const usbh_dev_driver_info_t usbh_midi_driver_info = {
@@ -77,7 +79,7 @@ static void *init(void *usbh_dev)
return 0;
}
uint32_t i;
- midi_device_t *drvdata = 0;
+ midi_device_t *drvdata = NULL;
// find free data space for midi device
for (i = 0; i < USBH_AC_MIDI_MAX_DEVICES; i++) {
@@ -89,7 +91,7 @@ static void *init(void *usbh_dev)
drvdata->endpoint_in_toggle = 0;
drvdata->endpoint_out_toggle = 0;
drvdata->usbh_device = usbh_dev;
- drvdata->write_callback_user = 0;
+ drvdata->write_callback_user = NULL;
drvdata->sending = false;
break;
}