openocd: fix simple cases of NULL comparison

[openocd.git] / src / jtag / drivers / cmsis_dap_usb_hid.c

diff --git a/src/jtag/drivers/cmsis_dap_usb_hid.c b/src/jtag/drivers/cmsis_dap_usb_hid.c
index 38069f8400fc0414f7162285619caf8cda695927..ff0ac78372a377b7ab1c234a6af79f8599965a5e 100644 (file)
--- a/src/jtag/drivers/cmsis_dap_usb_hid.c
+++ b/src/jtag/drivers/cmsis_dap_usb_hid.c
@@ -70,11 +70,11 @@ static int cmsis_dap_hid_open(struct cmsis_dap *dap, uint16_t vids[], uint16_t p
         */
        devs = hid_enumerate(0x0, 0x0);
        cur_dev = devs;
-       while (NULL != cur_dev) {
+       while (cur_dev) {
                bool found = false;
 
                if (0 == vids[0]) {
-                       if (NULL == cur_dev->product_string) {
+                       if (!cur_dev->product_string) {
                                LOG_DEBUG("Cannot read product string of device 0x%x:0x%x",
                                          cur_dev->vendor_id, cur_dev->product_id);
                        } else if (wcsstr(cur_dev->product_string, L"CMSIS-DAP")) {
@@ -97,10 +97,10 @@ static int cmsis_dap_hid_open(struct cmsis_dap *dap, uint16_t vids[], uint16_t p
 
                if (found) {
                        /* check serial number matches if given */
-                       if (serial == NULL)
+                       if (!serial)
                                break;
 
-                       if (cur_dev->serial_number != NULL) {
+                       if (cur_dev->serial_number) {
                                size_t len = (strlen(serial) + 1) * sizeof(wchar_t);
                                wchar_t *wserial = malloc(len);
                                mbstowcs(wserial, serial, len);
@@ -118,7 +118,7 @@ static int cmsis_dap_hid_open(struct cmsis_dap *dap, uint16_t vids[], uint16_t p
                cur_dev = cur_dev->next;
        }
 
-       if (NULL != cur_dev) {
+       if (cur_dev) {
                target_vid = cur_dev->vendor_id;
                target_pid = cur_dev->product_id;
        }
@@ -129,7 +129,7 @@ static int cmsis_dap_hid_open(struct cmsis_dap *dap, uint16_t vids[], uint16_t p
        }
 
        dap->bdata = malloc(sizeof(struct cmsis_dap_backend_data));
-       if (dap->bdata == NULL) {
+       if (!dap->bdata) {
                LOG_ERROR("unable to allocate memory");
                return ERROR_FAIL;
        }
@@ -137,7 +137,7 @@ static int cmsis_dap_hid_open(struct cmsis_dap *dap, uint16_t vids[], uint16_t p
        dev = hid_open_path(cur_dev->path);
        hid_free_enumeration(devs);
 
-       if (dev == NULL) {
+       if (!dev) {
                LOG_ERROR("unable to open CMSIS-DAP device 0x%x:0x%x", target_vid, target_pid);
                return ERROR_FAIL;
        }
@@ -217,7 +217,7 @@ static int cmsis_dap_hid_alloc(struct cmsis_dap *dap, unsigned int pkt_sz)
 {
        unsigned int packet_buffer_size = pkt_sz + REPORT_ID_SIZE;
        uint8_t *buf = malloc(packet_buffer_size);
-       if (buf == NULL) {
+       if (!buf) {
                LOG_ERROR("unable to allocate CMSIS-DAP packet buffer");
                return ERROR_FAIL;
        }