media: drivers: delete error messages for failed memory allocation

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

[mchehab@s-opensource.com: fold several similar patches into one]
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/common/cypress_firmware.c

@@ -75,10 +75,8 @@ int cypress_load_firmware(struct usb_device *udev,
 	int ret, pos = 0;
 
 	hx = kmalloc(sizeof(struct hexline), GFP_KERNEL);
-	if (!hx) {
-		dev_err(&udev->dev, "%s: kmalloc() failed\n", KBUILD_MODNAME);
+	if (!hx)
 		return -ENOMEM;
-	}
 
 	/* stop the CPU */
 	hx->data[0] = 1;

drivers/media/common/siano/smscoreapi.c

@@ -1301,10 +1301,8 @@ static int smscore_init_device(struct smscore_device_t *coredev, int mode)
 
 	buffer = kmalloc(sizeof(struct sms_msg_data) +
 			SMS_DMA_ALIGNMENT, GFP_KERNEL | GFP_DMA);
-	if (!buffer) {
-		pr_err("Could not allocate buffer for init device message.\n");
+	if (!buffer)
 		return -ENOMEM;
-	}
 
 	msg = (struct sms_msg_data *)SMS_ALIGN_ADDRESS(buffer);
 	SMS_INIT_MSG(&msg->x_msg_header, MSG_SMS_INIT_DEVICE_REQ,
@@ -1687,10 +1685,9 @@ static int smscore_validate_client(struct smscore_device_t *coredev,
 		return -EEXIST;
 	}
 	listentry = kzalloc(sizeof(struct smscore_idlist_t), GFP_KERNEL);
-	if (!listentry) {
-		pr_err("Can't allocate memory for client id.\n");
+	if (!listentry)
 		return -ENOMEM;
-	}
+
 	listentry->id = id;
 	listentry->data_type = data_type;
 	list_add_locked(&listentry->entry, &client->idlist,
@@ -1725,10 +1722,8 @@ int smscore_register_client(struct smscore_device_t *coredev,
 	}
 
 	newclient = kzalloc(sizeof(struct smscore_client_t), GFP_KERNEL);
-	if (!newclient) {
-		pr_err("Failed to allocate memory for client.\n");
+	if (!newclient)
 		return -ENOMEM;
-	}
 
 	INIT_LIST_HEAD(&newclient->idlist);
 	newclient->coredev = coredev;

drivers/media/dvb-frontends/as102_fe.c

@@ -456,10 +456,9 @@ struct dvb_frontend *as102_attach(const char *name,
 	struct dvb_frontend *fe;
 
 	state = kzalloc(sizeof(struct as102_state), GFP_KERNEL);
-	if (state == NULL) {
-		pr_err("%s: unable to allocate memory for state\n", __func__);
+	if (!state)
 		return NULL;
-	}
+
 	fe = &state->frontend;
 	fe->demodulator_priv = state;
 	state->ops = ops;

drivers/media/dvb-frontends/cx24113.c

@@ -555,10 +555,9 @@ struct dvb_frontend *cx24113_attach(struct dvb_frontend *fe,
 	struct cx24113_state *state =
 		kzalloc(sizeof(struct cx24113_state), GFP_KERNEL);
 	int rc;
-	if (state == NULL) {
-		cx_err("Unable to kzalloc\n");
+
+	if (!state)
 		goto error;
-	}
 
 	/* setup the state */
 	state->config = config;

drivers/media/dvb-frontends/cx24116.c

@@ -227,7 +227,6 @@ static int cx24116_writeregN(struct cx24116_state *state, int reg,
 
 	buf = kmalloc(len + 1, GFP_KERNEL);
 	if (buf == NULL) {
-		printk("Unable to kmalloc\n");
 		ret = -ENOMEM;
 		goto error;
 	}

drivers/media/dvb-frontends/drxd_hard.c

@@ -911,7 +911,6 @@ static int load_firmware(struct drxd_state *state, const char *fw_name)
 	state->microcode = kmemdup(fw->data, fw->size, GFP_KERNEL);
 	if (state->microcode == NULL) {
 		release_firmware(fw);
-		printk(KERN_ERR "drxd: firmware load failure: no memory\n");
 		return -ENOMEM;
 	}
 

drivers/media/dvb-frontends/ds3000.c

@@ -277,10 +277,8 @@ static int ds3000_writeFW(struct ds3000_state *state, int reg,
 	u8 *buf;
 
 	buf = kmalloc(33, GFP_KERNEL);
-	if (buf == NULL) {
-		printk(KERN_ERR "Unable to kmalloc\n");
+	if (!buf)
 		return -ENOMEM;
-	}
 
 	*(buf) = reg;
 
@@ -842,10 +840,8 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(struct ds3000_state), GFP_KERNEL);
-	if (state == NULL) {
-		printk(KERN_ERR "Unable to kmalloc\n");
+	if (!state)
 		goto error2;
-	}
 
 	state->config = config;
 	state->i2c = i2c;

drivers/media/dvb-frontends/mb86a20s.c

@@ -2072,11 +2072,8 @@ struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
 
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL);
-	if (state == NULL) {
-		dev_err(&i2c->dev,
-			"%s: unable to allocate memory for state\n", __func__);
+	if (!state)
 		goto error;
-	}
 
 	/* setup the state */
 	state->config = config;

drivers/media/dvb-frontends/si2168.c

@@ -696,7 +696,6 @@ static int si2168_probe(struct i2c_client *client,
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (!dev) {
 		ret = -ENOMEM;
-		dev_err(&client->dev, "kzalloc() failed\n");
 		goto err;
 	}
 

drivers/media/dvb-frontends/sp2.c

@@ -384,7 +384,6 @@ static int sp2_probe(struct i2c_client *client,
 	s = kzalloc(sizeof(struct sp2), GFP_KERNEL);
 	if (!s) {
 		ret = -ENOMEM;
-		dev_err(&client->dev, "kzalloc() failed\n");
 		goto err;
 	}
 

drivers/media/i2c/adv7604.c

@@ -3316,10 +3316,8 @@ static int adv76xx_probe(struct i2c_client *client,
 			client->addr << 1);
 
 	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
-	if (!state) {
-		v4l_err(client, "Could not allocate adv76xx_state memory!\n");
+	if (!state)
 		return -ENOMEM;
-	}
 
 	state->i2c_clients[ADV76XX_PAGE_IO] = client;
 

drivers/media/i2c/adv7842.c

@@ -3468,10 +3468,8 @@ static int adv7842_probe(struct i2c_client *client,
 	}
 
 	state = devm_kzalloc(&client->dev, sizeof(struct adv7842_state), GFP_KERNEL);
-	if (!state) {
-		v4l_err(client, "Could not allocate adv7842_state memory!\n");
+	if (!state)
 		return -ENOMEM;
-	}
 
 	/* platform data */
 	state->pdata = *pdata;

drivers/media/pci/cx18/cx18-driver.c

@@ -910,11 +910,9 @@ static int cx18_probe(struct pci_dev *pci_dev,
 	}
 
 	cx = kzalloc(sizeof(struct cx18), GFP_ATOMIC);
-	if (cx == NULL) {
-		printk(KERN_ERR "cx18: cannot manage card %d, out of memory\n",
-		       i);
+	if (!cx)
 		return -ENOMEM;
-	}
+
 	cx->pci_dev = pci_dev;
 	cx->instance = i;
 

drivers/media/pci/mantis/hopper_cards.c

@@ -165,7 +165,6 @@ static int hopper_pci_probe(struct pci_dev *pdev,
 
 	mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
 	if (mantis == NULL) {
-		printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
 		err = -ENOMEM;
 		goto fail0;
 	}

drivers/media/pci/mantis/mantis_cards.c

@@ -174,10 +174,8 @@ static int mantis_pci_probe(struct pci_dev *pdev,
 	int err = 0;
 
 	mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
-	if (mantis == NULL) {
-		printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
+	if (!mantis)
 		return -ENOMEM;
-	}
 
 	drvdata			= (void *)pci_id->driver_data;
 	mantis->num		= devs;

drivers/media/pci/meye/meye.c

@@ -1626,23 +1626,18 @@ static int meye_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 	meye.mchip_dev = pcidev;
 
 	meye.grab_temp = vmalloc(MCHIP_NB_PAGES_MJPEG * PAGE_SIZE);
-	if (!meye.grab_temp) {
-		v4l2_err(v4l2_dev, "grab buffer allocation failed\n");
+	if (!meye.grab_temp)
 		goto outvmalloc;
-	}
 
 	spin_lock_init(&meye.grabq_lock);
 	if (kfifo_alloc(&meye.grabq, sizeof(int) * MEYE_MAX_BUFNBRS,
-				GFP_KERNEL)) {
-		v4l2_err(v4l2_dev, "fifo allocation failed\n");
+			GFP_KERNEL))
 		goto outkfifoalloc1;
-	}
+
 	spin_lock_init(&meye.doneq_lock);
 	if (kfifo_alloc(&meye.doneq, sizeof(int) * MEYE_MAX_BUFNBRS,
-				GFP_KERNEL)) {
-		v4l2_err(v4l2_dev, "fifo allocation failed\n");
+			GFP_KERNEL))
 		goto outkfifoalloc2;
-	}
 
 	meye.vdev = meye_template;
 	meye.vdev.v4l2_dev = &meye.v4l2_dev;

drivers/media/pci/saa7146/hexium_gemini.c

@@ -261,10 +261,9 @@ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_d
 	DEB_EE("\n");
 
 	hexium = kzalloc(sizeof(struct hexium), GFP_KERNEL);
-	if (NULL == hexium) {
-		pr_err("not enough kernel memory in hexium_attach()\n");
+	if (!hexium)
 		return -ENOMEM;
-	}
+
 	dev->ext_priv = hexium;
 
 	/* enable i2c-port pins */

drivers/media/pci/saa7146/hexium_orion.c

@@ -220,10 +220,8 @@ static int hexium_probe(struct saa7146_dev *dev)
 	}
 
 	hexium = kzalloc(sizeof(struct hexium), GFP_KERNEL);
-	if (NULL == hexium) {
-		pr_err("hexium_probe: not enough kernel memory\n");
+	if (!hexium)
 		return -ENOMEM;
-	}
 
 	/* enable i2c-port pins */
 	saa7146_write(dev, MC1, (MASK_08 | MASK_24 | MASK_10 | MASK_26));

drivers/media/pci/saa7164/saa7164-buffer.c

@@ -99,10 +99,8 @@ struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_port *port,
 	}
 
 	buf = kzalloc(sizeof(struct saa7164_buffer), GFP_KERNEL);
-	if (!buf) {
-		log_warn("%s() SAA_ERR_NO_RESOURCES\n", __func__);
+	if (!buf)
 		goto ret;
-	}
 
 	buf->idx = -1;
 	buf->port = port;

drivers/media/platform/atmel/atmel-isc.c

@@ -1507,10 +1507,8 @@ static int isc_formats_init(struct isc_device *isc)
 	isc->user_formats = devm_kcalloc(isc->dev,
 					 num_fmts, sizeof(struct isc_format *),
 					 GFP_KERNEL);
-	if (!isc->user_formats) {
-		v4l2_err(&isc->v4l2_dev, "could not allocate memory\n");
+	if (!isc->user_formats)
 		return -ENOMEM;
-	}
 
 	fmt = &isc_formats[0];
 	for (i = 0, j = 0; i < ARRAY_SIZE(isc_formats); i++) {

drivers/media/platform/atmel/atmel-isi.c

@@ -1038,10 +1038,8 @@ static int isi_formats_init(struct atmel_isi *isi)
 	isi->user_formats = devm_kcalloc(isi->dev,
 					 num_fmts, sizeof(struct isi_format *),
 					 GFP_KERNEL);
-	if (!isi->user_formats) {
-		dev_err(isi->dev, "could not allocate memory\n");
+	if (!isi->user_formats)
 		return -ENOMEM;
-	}
 
 	memcpy(isi->user_formats, isi_fmts,
 	       num_fmts * sizeof(struct isi_format *));
@@ -1176,10 +1174,8 @@ static int atmel_isi_probe(struct platform_device *pdev)
 	int ret, i;
 
 	isi = devm_kzalloc(&pdev->dev, sizeof(struct atmel_isi), GFP_KERNEL);
-	if (!isi) {
-		dev_err(&pdev->dev, "Can't allocate interface!\n");
+	if (!isi)
 		return -ENOMEM;
-	}
 
 	isi->pclk = devm_clk_get(&pdev->dev, "isi_clk");
 	if (IS_ERR(isi->pclk))

drivers/media/platform/blackfin/ppi.c

@@ -338,7 +338,6 @@ struct ppi_if *ppi_create_instance(struct platform_device *pdev,
 	ppi = kzalloc(sizeof(*ppi), GFP_KERNEL);
 	if (!ppi) {
 		peripheral_free_list(info->pin_req);
-		dev_err(&pdev->dev, "unable to allocate memory for ppi handle\n");
 		return NULL;
 	}
 	ppi->ops = &ppi_ops;

drivers/media/usb/zr364xx/zr364xx.c

@@ -209,10 +209,8 @@ static int send_control_msg(struct usb_device *udev, u8 request, u16 value,
 	int status;
 
 	unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL);
-	if (!transfer_buffer) {
-		dev_err(&udev->dev, "kmalloc(%d) failed\n", size);
+	if (!transfer_buffer)
 		return -ENOMEM;
-	}
 
 	memcpy(transfer_buffer, cp, size);
 
@@ -1424,10 +1422,8 @@ static int zr364xx_probe(struct usb_interface *intf,
 		 le16_to_cpu(udev->descriptor.idProduct));
 
 	cam = kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL);
-	if (cam == NULL) {
-		dev_err(&udev->dev, "cam: out of memory !\n");
+	if (!cam)
 		return -ENOMEM;
-	}
 
 	cam->v4l2_dev.release = zr364xx_release;
 	err = v4l2_device_register(&intf->dev, &cam->v4l2_dev);