diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-19 09:47:30 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-19 09:47:30 +0100 |
| commit | 0d4a42f6bd298e826620585e766a154ab460617a (patch) | |
| tree | 406d8f7778691d858dbe3e48e4bbb10e99c0a58a /drivers/media/dvb-core/dvb_ca_en50221.c | |
| parent | d62b4892f3d9f7dd2002e5309be10719d6805b0f (diff) | |
| parent | a937536b868b8369b98967929045f1df54234323 (diff) | |
Merge tag 'v3.9-rc3' into drm-intel-next-queued
Backmerge so that I can merge Imre Deak's coalesced sg entries fixes,
which depend upon the new for_each_sg_page introduce in
commit a321e91b6d73ed011ffceed384c40d2785cf723b
Author: Imre Deak <imre.deak@intel.com>
Date: Wed Feb 27 17:02:56 2013 -0800
lib/scatterlist: add simple page iterator
The merge itself is just two trivial conflicts:
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/media/dvb-core/dvb_ca_en50221.c')
| -rw-r--r-- | drivers/media/dvb-core/dvb_ca_en50221.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb-core/dvb_ca_en50221.c index 9be65a3b931f..0aac3096728e 100644 --- a/drivers/media/dvb-core/dvb_ca_en50221.c +++ b/drivers/media/dvb-core/dvb_ca_en50221.c @@ -156,6 +156,9 @@ struct dvb_ca_private { /* Slot to start looking for data to read from in the next user-space read operation */ int next_read_slot; + + /* mutex serializing ioctls */ + struct mutex ioctl_mutex; }; static void dvb_ca_en50221_thread_wakeup(struct dvb_ca_private *ca); @@ -1191,6 +1194,9 @@ static int dvb_ca_en50221_io_do_ioctl(struct file *file, dprintk("%s\n", __func__); + if (mutex_lock_interruptible(&ca->ioctl_mutex)) + return -ERESTARTSYS; + switch (cmd) { case CA_RESET: for (slot = 0; slot < ca->slot_count; slot++) { @@ -1221,8 +1227,10 @@ static int dvb_ca_en50221_io_do_ioctl(struct file *file, case CA_GET_SLOT_INFO: { struct ca_slot_info *info = parg; - if ((info->num > ca->slot_count) || (info->num < 0)) - return -EINVAL; + if ((info->num > ca->slot_count) || (info->num < 0)) { + err = -EINVAL; + goto out_unlock; + } info->type = CA_CI_LINK; info->flags = 0; @@ -1241,6 +1249,8 @@ static int dvb_ca_en50221_io_do_ioctl(struct file *file, break; } +out_unlock: + mutex_unlock(&ca->ioctl_mutex); return err; } @@ -1695,6 +1705,8 @@ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, mutex_init(&ca->slot_info[i].slot_lock); } + mutex_init(&ca->ioctl_mutex); + if (signal_pending(current)) { ret = -EINTR; goto error; |