Merge tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - Documentation for digital TV (both kAPI and uAPI) are now in sync
   with the implementation (except for legacy/deprecated ioctls). This
   is a major step, as there were always a gap there

 - New sensor driver: imx274

 - New cec driver: cec-gpio

 - New platform driver for rockship rga and tegra CEC

 - New RC driver: tango-ir

 - Several cleanups at atomisp driver

 - Core improvements for RC, CEC, V4L2 async probing support and DVB

 - Lots of drivers cleanup, fixes and improvements.

* tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (332 commits)
  dvb_frontend: don't use-after-free the frontend struct
  media: dib0700: fix invalid dvb_detach argument
  media: v4l2-ctrls: Don't validate BITMASK twice
  media: s5p-mfc: fix lockdep warning
  media: dvb-core: always call invoke_release() in fe_free()
  media: usb: dvb-usb-v2: dvb_usb_core: remove redundant code in dvb_usb_fe_sleep
  media: au0828: make const array addr_list static
  media: cx88: make const arrays default_addr_list and pvr2000_addr_list static
  media: drxd: make const array fastIncrDecLUT static
  media: usb: fix spelling mistake: "synchronuously" -> "synchronously"
  media: ddbridge: fix build warnings
  media: av7110: avoid 2038 overflow in debug print
  media: Don't do DMA on stack for firmware upload in the AS102 driver
  media: v4l: async: fix unregister for implicitly registered sub-device notifiers
  media: v4l: async: fix return of unitialized variable ret
  media: imx274: fix missing return assignment from call to imx274_mode_regs
  media: camss-vfe: always initialize reg at vfe_set_xbar_cfg()
  media: atomisp: make function calls cleaner
  media: atomisp: get rid of storage_class.h
  media: atomisp: get rid of wrong stddef.h include
  ...

1 files changed, 7 insertions, 15 deletions

diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c
index 0b17a45c5640..bd4f8278c906 100644
--- a/drivers/media/dvb-frontends/ds3000.c
+++ b/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;
 
@@ -835,17 +833,15 @@ static const struct dvb_frontend_ops ds3000_ops;
 struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 				    struct i2c_adapter *i2c)
 {
-	struct ds3000_state *state = NULL;
+	struct ds3000_state *state;
 	int ret;
 
 	dprintk("%s\n", __func__);
 
 	/* allocate memory for the internal state */
-	state = kzalloc(sizeof(struct ds3000_state), GFP_KERNEL);
-	if (state == NULL) {
-		printk(KERN_ERR "Unable to kmalloc\n");
-		goto error2;
-	}
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return NULL;
 
 	state->config = config;
 	state->i2c = i2c;
@@ -854,8 +850,9 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 	/* check if the demod is present */
 	ret = ds3000_readreg(state, 0x00) & 0xfe;
 	if (ret != 0xe0) {
+		kfree(state);
 		printk(KERN_ERR "Invalid probe, probably not a DS3000\n");
-		goto error3;
+		return NULL;
 	}
 
 	printk(KERN_INFO "DS3000 chip version: %d.%d attached.\n",
@@ -873,11 +870,6 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 	 */
 	ds3000_set_voltage(&state->frontend, SEC_VOLTAGE_OFF);
 	return &state->frontend;
-
-error3:
-	kfree(state);
-error2:
-	return NULL;
 }
 EXPORT_SYMBOL(ds3000_attach);