Merge tag 'media/v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - a compilation fix issue with ti-vpe on arm 32 bits

 - two Kconfig fixes for imx214 and max9286 drivers

 - a kernel information leak at v4l2-core on time32 compat ioctls

 - some fixes at rc core unbind logic

 - a fix at mceusb driver for it to not use GFP_ATOMIC

 - fixes at cedrus and vicodec drivers at the control handling logic

 - a fix at gpio-ir-tx to avoid disabling interruts on a spinlock

* tag 'media/v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: mceusb: Avoid GFP_ATOMIC where it is not needed
  media: gpio-ir-tx: spinlock is not needed to disable interrupts
  media: rc: do not access device via sysfs after rc_unregister_device()
  media: rc: uevent sysfs file races with rc_unregister_device()
  media: max9286: Depend on OF_GPIO
  media: i2c: imx214: select V4L2_FWNODE
  media: cedrus: Add missing v4l2_ctrl_request_hdl_put()
  media: vicodec: add missing v4l2_ctrl_request_hdl_put()
  media: media/v4l2-core: Fix kernel-infoleak in video_put_user()
  media: ti-vpe: cal: Fix compilation on 32-bit ARM

3 files changed, 34 insertions, 28 deletions

diff --git a/drivers/media/rc/gpio-ir-tx.c b/drivers/media/rc/gpio-ir-tx.c
index f33b443bfa47..c6cd2e6d8e65 100644
--- a/drivers/media/rc/gpio-ir-tx.c
+++ b/drivers/media/rc/gpio-ir-tx.c
@@ -19,8 +19,6 @@ struct gpio_ir {
 	struct gpio_desc *gpio;
 	unsigned int carrier;
 	unsigned int duty_cycle;
-	/* we need a spinlock to hold the cpu while transmitting */
-	spinlock_t lock;
 };
 
 static const struct of_device_id gpio_ir_tx_of_match[] = {
@@ -53,12 +51,11 @@ static int gpio_ir_tx_set_carrier(struct rc_dev *dev, u32 carrier)
 static void gpio_ir_tx_unmodulated(struct gpio_ir *gpio_ir, uint *txbuf,
 				   uint count)
 {
-	unsigned long flags;
 	ktime_t edge;
 	s32 delta;
 	int i;
 
-	spin_lock_irqsave(&gpio_ir->lock, flags);
+	local_irq_disable();
 
 	edge = ktime_get();
 
@@ -72,14 +69,11 @@ static void gpio_ir_tx_unmodulated(struct gpio_ir *gpio_ir, uint *txbuf,
 	}
 
 	gpiod_set_value(gpio_ir->gpio, 0);
-
-	spin_unlock_irqrestore(&gpio_ir->lock, flags);
 }
 
 static void gpio_ir_tx_modulated(struct gpio_ir *gpio_ir, uint *txbuf,
 				 uint count)
 {
-	unsigned long flags;
 	ktime_t edge;
 	/*
 	 * delta should never exceed 0.5 seconds (IR_MAX_DURATION) and on
@@ -95,7 +89,7 @@ static void gpio_ir_tx_modulated(struct gpio_ir *gpio_ir, uint *txbuf,
 	space = DIV_ROUND_CLOSEST((100 - gpio_ir->duty_cycle) *
 				  (NSEC_PER_SEC / 100), gpio_ir->carrier);
 
-	spin_lock_irqsave(&gpio_ir->lock, flags);
+	local_irq_disable();
 
 	edge = ktime_get();
 
@@ -128,19 +122,20 @@ static void gpio_ir_tx_modulated(struct gpio_ir *gpio_ir, uint *txbuf,
 			edge = last;
 		}
 	}
-
-	spin_unlock_irqrestore(&gpio_ir->lock, flags);
 }
 
 static int gpio_ir_tx(struct rc_dev *dev, unsigned int *txbuf,
 		      unsigned int count)
 {
 	struct gpio_ir *gpio_ir = dev->priv;
+	unsigned long flags;
 
+	local_irq_save(flags);
 	if (gpio_ir->carrier)
 		gpio_ir_tx_modulated(gpio_ir, txbuf, count);
 	else
 		gpio_ir_tx_unmodulated(gpio_ir, txbuf, count);
+	local_irq_restore(flags);
 
 	return count;
 }
@@ -176,7 +171,6 @@ static int gpio_ir_tx_probe(struct platform_device *pdev)
 
 	gpio_ir->carrier = 38000;
 	gpio_ir->duty_cycle = 50;
-	spin_lock_init(&gpio_ir->lock);
 
 	rc = devm_rc_register_device(&pdev->dev, rcdev);
 	if (rc < 0)
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index f9616158bcf4..98681ba10428 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -1726,7 +1726,7 @@ static int mceusb_dev_probe(struct usb_interface *intf,
 		goto mem_alloc_fail;
 
 	ir->pipe_in = pipe;
-	ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
+	ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_KERNEL, &ir->dma_in);
 	if (!ir->buf_in)
 		goto buf_in_alloc_fail;
 
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 7b53066d9d07..dee8a9f3d80a 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -1292,6 +1292,10 @@ static ssize_t store_protocols(struct device *device,
 	}
 
 	mutex_lock(&dev->lock);
+	if (!dev->registered) {
+		mutex_unlock(&dev->lock);
+		return -ENODEV;
+	}
 
 	old_protocols = *current_protocols;
 	new_protocols = old_protocols;
@@ -1430,6 +1434,10 @@ static ssize_t store_filter(struct device *device,
 		return -EINVAL;
 
 	mutex_lock(&dev->lock);
+	if (!dev->registered) {
+		mutex_unlock(&dev->lock);
+		return -ENODEV;
+	}
 
 	new_filter = *filter;
 	if (fattr->mask)
@@ -1544,6 +1552,10 @@ static ssize_t store_wakeup_protocols(struct device *device,
 	int i;
 
 	mutex_lock(&dev->lock);
+	if (!dev->registered) {
+		mutex_unlock(&dev->lock);
+		return -ENODEV;
+	}
 
 	allowed = dev->allowed_wakeup_protocols;
 
@@ -1601,25 +1613,25 @@ static void rc_dev_release(struct device *device)
 	kfree(dev);
 }
 
-#define ADD_HOTPLUG_VAR(fmt, val...)					\
-	do {								\
-		int err = add_uevent_var(env, fmt, val);		\
-		if (err)						\
-			return err;					\
-	} while (0)
-
 static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
 {
 	struct rc_dev *dev = to_rc_dev(device);
+	int ret = 0;
 
-	if (dev->rc_map.name)
-		ADD_HOTPLUG_VAR("NAME=%s", dev->rc_map.name);
-	if (dev->driver_name)
-		ADD_HOTPLUG_VAR("DRV_NAME=%s", dev->driver_name);
-	if (dev->device_name)
-		ADD_HOTPLUG_VAR("DEV_NAME=%s", dev->device_name);
+	mutex_lock(&dev->lock);
 
-	return 0;
+	if (!dev->registered)
+		ret = -ENODEV;
+	if (ret == 0 && dev->rc_map.name)
+		ret = add_uevent_var(env, "NAME=%s", dev->rc_map.name);
+	if (ret == 0 && dev->driver_name)
+		ret = add_uevent_var(env, "DRV_NAME=%s", dev->driver_name);
+	if (ret == 0 && dev->device_name)
+		ret = add_uevent_var(env, "DEV_NAME=%s", dev->device_name);
+
+	mutex_unlock(&dev->lock);
+
+	return ret;
 }
 
 /*
@@ -2011,14 +2023,14 @@ void rc_unregister_device(struct rc_dev *dev)
 	del_timer_sync(&dev->timer_keyup);
 	del_timer_sync(&dev->timer_repeat);
 
-	rc_free_rx_device(dev);
-
 	mutex_lock(&dev->lock);
 	if (dev->users && dev->close)
 		dev->close(dev);
 	dev->registered = false;
 	mutex_unlock(&dev->lock);
 
+	rc_free_rx_device(dev);
+
 	/*
 	 * lirc device should be freed with dev->registered = false, so
 	 * that userspace polling will get notified.