diff options
| author | Greg Kroah-Hartman | 2021-04-05 08:56:10 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2021-04-05 08:56:10 +0200 |
| commit | de800f290dfaa341f22acac22bc454ea2bbf8f71 (patch) | |
| tree | 02ac02009524e4a8a4c1b169583618690bdd2567 /drivers/firewire/nosy.c | |
| parent | bee1f89aad2a51cd3339571bc8eadbb0dc88a683 (diff) | |
| parent | e49d033bddf5b565044e2abe4241353959bc9120 (diff) | |
Merge 5.12-rc6 into usb-next
We want the USB fixes in here as well and it resolves a merge issue with
xhci-mtk.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/firewire/nosy.c')
| -rw-r--r-- | drivers/firewire/nosy.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c index 5fd6a60b6741..88ed971e32c0 100644 --- a/drivers/firewire/nosy.c +++ b/drivers/firewire/nosy.c @@ -346,6 +346,7 @@ nosy_ioctl(struct file *file, unsigned int cmd, unsigned long arg) struct client *client = file->private_data; spinlock_t *client_list_lock = &client->lynx->client_list_lock; struct nosy_stats stats; + int ret; switch (cmd) { case NOSY_IOC_GET_STATS: @@ -360,11 +361,15 @@ nosy_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return 0; case NOSY_IOC_START: + ret = -EBUSY; spin_lock_irq(client_list_lock); - list_add_tail(&client->link, &client->lynx->client_list); + if (list_empty(&client->link)) { + list_add_tail(&client->link, &client->lynx->client_list); + ret = 0; + } spin_unlock_irq(client_list_lock); - return 0; + return ret; case NOSY_IOC_STOP: spin_lock_irq(client_list_lock); |