media: drivers: Adjust checks for null pointers
The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written !… Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Hans Verkuil <hansverk@cisco.com>
This commit is contained in:
Markus Elfring
Mauro Carvalho Chehab
parent
2d3da59ff1
commit
af28c99628
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@ -749,7 +749,7 @@ static int smscore_sendrequest_and_wait(struct smscore_device_t *coredev,
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void *buffer, size_t size, struct completion *completion) {
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int rc;
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if (completion == NULL)
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if (!completion)
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return -EINVAL;
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init_completion(completion);
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@ -1151,8 +1151,8 @@ static int smscore_load_firmware_from_file(struct smscore_device_t *coredev,
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}
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pr_debug("Firmware name: %s\n", fw_filename);
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if (loadfirmware_handler == NULL && !(coredev->device_flags
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& SMS_DEVICE_FAMILY2))
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if (!loadfirmware_handler &&
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!(coredev->device_flags & SMS_DEVICE_FAMILY2))
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return -EINVAL;
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rc = request_firmware(&fw, fw_filename, coredev->device);
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@ -1789,7 +1789,7 @@ int smsclient_sendrequest(struct smscore_client_t *client,
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struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) buffer;
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int rc;
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if (client == NULL) {
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if (!client) {
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pr_err("Got NULL client\n");
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return -EINVAL;
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}
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@ -1797,7 +1797,7 @@ int smsclient_sendrequest(struct smscore_client_t *client,
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coredev = client->coredev;
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/* check that no other channel with same id exists */
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if (coredev == NULL) {
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if (!coredev) {
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pr_err("Got NULL coredev\n");
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return -EINVAL;
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}
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@ -1954,7 +1954,7 @@ int smscore_gpio_configure(struct smscore_device_t *coredev, u8 pin_num,
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if (pin_num > MAX_GPIO_PIN_NUMBER)
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return -EINVAL;
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if (p_gpio_config == NULL)
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if (!p_gpio_config)
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return -EINVAL;
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total_len = sizeof(struct sms_msg_hdr) + (sizeof(u32) * 6);
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@ -328,7 +328,7 @@ static int WriteTable(struct drxd_state *state, u8 * pTable)
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{
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int status = 0;
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if (pTable == NULL)
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if (!pTable)
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return 0;
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while (!status) {
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@ -909,7 +909,7 @@ static int load_firmware(struct drxd_state *state, const char *fw_name)
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}
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state->microcode = kmemdup(fw->data, fw->size, GFP_KERNEL);
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if (state->microcode == NULL) {
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if (!state->microcode) {
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release_firmware(fw);
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return -ENOMEM;
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}
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@ -2629,7 +2629,7 @@ static int DRXD_init(struct drxd_state *state, const u8 *fw, u32 fw_size)
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break;
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/* Apply I2c address patch to B1 */
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if (!state->type_A && state->m_HiI2cPatch != NULL) {
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if (!state->type_A && state->m_HiI2cPatch) {
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status = WriteTable(state, state->m_HiI2cPatch);
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if (status < 0)
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break;
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@ -357,14 +357,14 @@ static int sp2_exit(struct i2c_client *client)
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dev_dbg(&client->dev, "\n");
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if (client == NULL)
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if (!client)
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return 0;
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s = i2c_get_clientdata(client);
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if (s == NULL)
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if (!s)
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return 0;
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if (s->ca.data == NULL)
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if (!s->ca.data)
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return 0;
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dvb_ca_en50221_release(&s->ca);
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@ -1948,7 +1948,7 @@ static int adv76xx_set_format(struct v4l2_subdev *sd,
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return -EINVAL;
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info = adv76xx_format_info(state, format->format.code);
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if (info == NULL)
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if (!info)
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info = adv76xx_format_info(state, MEDIA_BUS_FMT_YUYV8_2X8);
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adv76xx_fill_format(state, &format->format);
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@ -2256,7 +2256,7 @@ static int adv76xx_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
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return 0;
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}
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if (data == NULL)
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if (!data)
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return -ENODATA;
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if (edid->start_block >= state->edid.blocks)
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@ -3480,7 +3480,7 @@ static int adv76xx_probe(struct i2c_client *client,
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state->i2c_clients[i] =
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adv76xx_dummy_client(sd, state->pdata.i2c_addresses[i],
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0xf2 + i);
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if (state->i2c_clients[i] == NULL) {
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if (!state->i2c_clients[i]) {
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err = -ENOMEM;
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v4l2_err(sd, "failed to create i2c client %u\n", i);
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goto err_i2c;
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@ -255,7 +255,7 @@ static void request_module_async(struct work_struct *work)
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request_module("cx18-alsa");
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/* Initialize cx18-alsa for this instance of the cx18 device */
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if (cx18_ext_init != NULL)
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if (cx18_ext_init)
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cx18_ext_init(dev);
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}
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@ -291,11 +291,11 @@ int cx18_msleep_timeout(unsigned int msecs, int intr)
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/* Release ioremapped memory */
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static void cx18_iounmap(struct cx18 *cx)
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{
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if (cx == NULL)
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if (!cx)
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return;
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/* Release io memory */
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if (cx->enc_mem != NULL) {
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if (cx->enc_mem) {
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CX18_DEBUG_INFO("releasing enc_mem\n");
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iounmap(cx->enc_mem);
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cx->enc_mem = NULL;
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@ -649,15 +649,15 @@ static void cx18_process_options(struct cx18 *cx)
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CX18_INFO("User specified %s card\n", cx->card->name);
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else if (cx->options.cardtype != 0)
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CX18_ERR("Unknown user specified type, trying to autodetect card\n");
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if (cx->card == NULL) {
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if (!cx->card) {
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if (cx->pci_dev->subsystem_vendor == CX18_PCI_ID_HAUPPAUGE) {
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cx->card = cx18_get_card(CX18_CARD_HVR_1600_ESMT);
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CX18_INFO("Autodetected Hauppauge card\n");
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}
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}
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if (cx->card == NULL) {
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if (!cx->card) {
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for (i = 0; (cx->card = cx18_get_card(i)); i++) {
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if (cx->card->pci_list == NULL)
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if (!cx->card->pci_list)
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continue;
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for (j = 0; cx->card->pci_list[j].device; j++) {
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if (cx->pci_dev->device !=
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@ -676,7 +676,7 @@ static void cx18_process_options(struct cx18 *cx)
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}
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done:
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if (cx->card == NULL) {
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if (!cx->card) {
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cx->card = cx18_get_card(CX18_CARD_HVR_1600_ESMT);
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CX18_ERR("Unknown card: vendor/device: [%04x:%04x]\n",
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cx->pci_dev->vendor, cx->pci_dev->device);
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@ -698,7 +698,7 @@ static int cx18_create_in_workq(struct cx18 *cx)
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snprintf(cx->in_workq_name, sizeof(cx->in_workq_name), "%s-in",
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cx->v4l2_dev.name);
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cx->in_work_queue = alloc_ordered_workqueue("%s", 0, cx->in_workq_name);
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if (cx->in_work_queue == NULL) {
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if (!cx->in_work_queue) {
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CX18_ERR("Unable to create incoming mailbox handler thread\n");
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return -ENOMEM;
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}
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@ -1254,7 +1254,7 @@ static void cx18_cancel_out_work_orders(struct cx18 *cx)
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{
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int i;
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for (i = 0; i < CX18_MAX_STREAMS; i++)
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if (&cx->streams[i].video_dev != NULL)
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if (&cx->streams[i].video_dev)
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cancel_work_sync(&cx->streams[i].out_work_order);
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}
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@ -1299,7 +1299,7 @@ static void cx18_remove(struct pci_dev *pci_dev)
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pci_disable_device(cx->pci_dev);
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if (cx->vbi.sliced_mpeg_data[0] != NULL)
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if (cx->vbi.sliced_mpeg_data[0])
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for (i = 0; i < CX18_VBI_FRAMES; i++)
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kfree(cx->vbi.sliced_mpeg_data[i]);
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@ -72,7 +72,7 @@ static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
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struct mantis_ca *ca;
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mantis = (struct mantis_pci *) dev_id;
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if (unlikely(mantis == NULL)) {
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if (unlikely(!mantis)) {
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dprintk(MANTIS_ERROR, 1, "Mantis == NULL");
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return IRQ_NONE;
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}
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@ -164,7 +164,7 @@ static int hopper_pci_probe(struct pci_dev *pdev,
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int err;
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mantis = kzalloc(sizeof(*mantis), GFP_KERNEL);
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if (mantis == NULL) {
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if (!mantis) {
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err = -ENOMEM;
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goto fail0;
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}
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@ -1590,7 +1590,7 @@ static int isc_async_complete(struct v4l2_async_notifier *notifier)
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spin_lock_init(&isc->dma_queue_lock);
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sd_entity->config = v4l2_subdev_alloc_pad_config(sd_entity->sd);
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if (sd_entity->config == NULL)
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if (!sd_entity->config)
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return -ENOMEM;
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ret = isc_formats_init(isc);
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@ -1714,7 +1714,7 @@ static int isc_parse_dt(struct device *dev, struct isc_device *isc)
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subdev_entity = devm_kzalloc(dev,
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sizeof(*subdev_entity), GFP_KERNEL);
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if (subdev_entity == NULL) {
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if (!subdev_entity) {
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of_node_put(rem);
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ret = -ENOMEM;
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break;
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@ -1722,7 +1722,7 @@ static int isc_parse_dt(struct device *dev, struct isc_device *isc)
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subdev_entity->asd = devm_kzalloc(dev,
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sizeof(*subdev_entity->asd), GFP_KERNEL);
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if (subdev_entity->asd == NULL) {
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if (!subdev_entity->asd) {
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of_node_put(rem);
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ret = -ENOMEM;
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break;
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@ -411,7 +411,7 @@ static void buffer_queue(struct vb2_buffer *vb)
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spin_lock_irqsave(&isi->irqlock, flags);
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list_add_tail(&buf->list, &isi->video_buffer_list);
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if (isi->active == NULL) {
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if (!isi->active) {
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isi->active = buf;
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if (vb2_is_streaming(vb->vb2_queue))
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start_dma(isi, buf);
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@ -1141,7 +1141,7 @@ static int isi_graph_init(struct atmel_isi *isi)
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/* Register the subdevices notifier. */
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subdevs = devm_kzalloc(isi->dev, sizeof(*subdevs), GFP_KERNEL);
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if (subdevs == NULL) {
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if (!subdevs) {
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of_node_put(isi->entity.node);
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return -ENOMEM;
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}
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@ -1200,7 +1200,7 @@ static int atmel_isi_probe(struct platform_device *pdev)
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return ret;
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isi->vdev = video_device_alloc();
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if (isi->vdev == NULL) {
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if (!isi->vdev) {
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ret = -ENOMEM;
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goto err_vdev_alloc;
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}
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@ -385,9 +385,9 @@ static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
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vb);
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int rc;
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DBG("%s, field=%d, fmt name = %s\n", __func__, field, cam->fmt != NULL ?
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cam->fmt->name : "");
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if (cam->fmt == NULL)
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DBG("%s, field=%d, fmt name = %s\n", __func__, field,
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cam->fmt ? cam->fmt->name : "");
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if (!cam->fmt)
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return -EINVAL;
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buf->vb.size = cam->width * cam->height * (cam->fmt->depth >> 3);
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@ -787,7 +787,7 @@ static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
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struct zr364xx_camera *cam = video_drvdata(file);
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char pixelformat_name[5];
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if (cam == NULL)
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if (!cam)
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return -ENODEV;
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if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) {
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@ -817,7 +817,7 @@ static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
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{
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struct zr364xx_camera *cam;
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if (file == NULL)
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if (!file)
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return -ENODEV;
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cam = video_drvdata(file);
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@ -979,13 +979,13 @@ static void read_pipe_completion(struct urb *purb)
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pipe_info = purb->context;
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_DBG("%s %p, status %d\n", __func__, purb, purb->status);
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if (pipe_info == NULL) {
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if (!pipe_info) {
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printk(KERN_ERR KBUILD_MODNAME ": no context!\n");
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return;
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}
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cam = pipe_info->cam;
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if (cam == NULL) {
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if (!cam) {
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printk(KERN_ERR KBUILD_MODNAME ": no context!\n");
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return;
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}
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@ -1069,7 +1069,7 @@ static void zr364xx_stop_readpipe(struct zr364xx_camera *cam)
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{
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struct zr364xx_pipeinfo *pipe_info;
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if (cam == NULL) {
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if (!cam) {
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printk(KERN_ERR KBUILD_MODNAME ": invalid device\n");
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return;
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}
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@ -1273,7 +1273,7 @@ static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma)
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struct zr364xx_camera *cam = video_drvdata(file);
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int ret;
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if (cam == NULL) {
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if (!cam) {
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DBG("%s: cam == NULL\n", __func__);
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return -ENODEV;
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}
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@ -1357,7 +1357,7 @@ static int zr364xx_board_init(struct zr364xx_camera *cam)
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pipe->transfer_buffer = kzalloc(pipe->transfer_size,
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GFP_KERNEL);
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if (pipe->transfer_buffer == NULL) {
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if (!pipe->transfer_buffer) {
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DBG("out of memory!\n");
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return -ENOMEM;
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}
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@ -1373,7 +1373,7 @@ static int zr364xx_board_init(struct zr364xx_camera *cam)
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DBG("valloc %p, idx %lu, pdata %p\n",
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&cam->buffer.frame[i], i,
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cam->buffer.frame[i].lpvbits);
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if (cam->buffer.frame[i].lpvbits == NULL) {
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if (!cam->buffer.frame[i].lpvbits) {
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printk(KERN_INFO KBUILD_MODNAME ": out of memory. Using less frames\n");
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break;
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}
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