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media fixes for v4.18-rc8

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Merge tag 'media/v4.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - a deadlock regression at vsp1 driver

 - some Remote Controller fixes related to the new BPF filter logic
   added on it for Kernel 4.18.

* tag 'media/v4.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: v4l: vsp1: Fix deadlock in VSPDL DRM pipelines
  media: rc: read out of bounds if bpf reports high protocol number
  media: bpf: ensure bpf program is freed on detach
  media: rc: be less noisy when driver misbehaves
This commit is contained in:
Linus Torvalds 2018-08-02 16:55:42 -07:00
commit 0585df468e
4 changed files with 16 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/platform/vsp1/vsp1_drm.c
View File

@ -728,9 +728,6 @@ EXPORT_SYMBOL_GPL(vsp1_du_setup_lif);
*/
void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index)
{
struct vsp1_device *vsp1 = dev_get_drvdata(dev);
mutex_lock(&vsp1->drm->lock);
}
EXPORT_SYMBOL_GPL(vsp1_du_atomic_begin);
@ -846,6 +843,7 @@ void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index,
drm_pipe->crc = cfg->crc;
mutex_lock(&vsp1->drm->lock);
vsp1_du_pipeline_setup_inputs(vsp1, pipe);
vsp1_du_pipeline_configure(pipe);
mutex_unlock(&vsp1->drm->lock);

1
drivers/media/rc/bpf-lirc.c
View File

@ -174,6 +174,7 @@ static int lirc_bpf_detach(struct rc_dev *rcdev, struct bpf_prog *prog)
rcu_assign_pointer(raw->progs, new_array);
bpf_prog_array_free(old_array);
bpf_prog_put(prog);
unlock:
mutex_unlock(&ir_raw_handler_lock);
return ret;

8
drivers/media/rc/rc-ir-raw.c
View File

@ -30,13 +30,13 @@ static int ir_raw_event_thread(void *data)
while (kfifo_out(&raw->kfifo, &ev, 1)) {
if (is_timing_event(ev)) {
if (ev.duration == 0)
dev_err(&dev->dev, "nonsensical timing event of duration 0");
dev_warn_once(&dev->dev, "nonsensical timing event of duration 0");
if (is_timing_event(raw->prev_ev) &&
!is_transition(&ev, &raw->prev_ev))
dev_err(&dev->dev, "two consecutive events of type %s",
TO_STR(ev.pulse));
dev_warn_once(&dev->dev, "two consecutive events of type %s",
TO_STR(ev.pulse));
if (raw->prev_ev.reset && ev.pulse == 0)
dev_err(&dev->dev, "timing event after reset should be pulse");
dev_warn_once(&dev->dev, "timing event after reset should be pulse");
}
list_for_each_entry(handler, &ir_raw_handler_list, list)
if (dev->enabled_protocols &

12
drivers/media/rc/rc-main.c
View File

@ -679,6 +679,14 @@ static void ir_timer_repeat(struct timer_list *t)
spin_unlock_irqrestore(&dev->keylock, flags);
}
static unsigned int repeat_period(int protocol)
{
if (protocol >= ARRAY_SIZE(protocols))
return 100;
return protocols[protocol].repeat_period;
}
/**
* rc_repeat() - signals that a key is still pressed
* @dev: the struct rc_dev descriptor of the device
@ -691,7 +699,7 @@ void rc_repeat(struct rc_dev *dev)
{
unsigned long flags;
unsigned int timeout = nsecs_to_jiffies(dev->timeout) +
msecs_to_jiffies(protocols[dev->last_protocol].repeat_period);
msecs_to_jiffies(repeat_period(dev->last_protocol));
struct lirc_scancode sc = {
.scancode = dev->last_scancode, .rc_proto = dev->last_protocol,
.keycode = dev->keypressed ? dev->last_keycode : KEY_RESERVED,
@ -803,7 +811,7 @@ void rc_keydown(struct rc_dev *dev, enum rc_proto protocol, u32 scancode,
if (dev->keypressed) {
dev->keyup_jiffies = jiffies + nsecs_to_jiffies(dev->timeout) +
msecs_to_jiffies(protocols[protocol].repeat_period);
msecs_to_jiffies(repeat_period(protocol));
mod_timer(&dev->timer_keyup, dev->keyup_jiffies);
}
spin_unlock_irqrestore(&dev->keylock, flags);