diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-07 00:55:34 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-07 00:55:34 +0100 |
| commit | 6572a281cfd805dd54718597d6c33261b5be052b (patch) | |
| tree | 9e61bf01db351d4371e2daf12fcf50213281572d /drivers/ieee1394/raw1394.c | |
| parent | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block (diff) | |
| parent | ieee1394: dv1394: fix possible deadlock in multithreaded clients (diff) | |
| download | linux-6572a281cfd805dd54718597d6c33261b5be052b.tar.xz linux-6572a281cfd805dd54718597d6c33261b5be052b.zip | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
ieee1394: dv1394: fix possible deadlock in multithreaded clients
ieee1394: raw1394: fix possible deadlock in multithreaded clients
ieee1394: struct device - replace bus_id with dev_name(), dev_set_name()
firewire: struct device - replace bus_id with dev_name(), dev_set_name()
Diffstat (limited to 'drivers/ieee1394/raw1394.c')
| -rw-r--r-- | drivers/ieee1394/raw1394.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c index 9f19ac492106..bf7e761c12b1 100644 --- a/drivers/ieee1394/raw1394.c +++ b/drivers/ieee1394/raw1394.c @@ -2268,7 +2268,8 @@ static ssize_t raw1394_write(struct file *file, const char __user * buffer, return -EFAULT; } - mutex_lock(&fi->state_mutex); + if (!mutex_trylock(&fi->state_mutex)) + return -EAGAIN; switch (fi->state) { case opened: @@ -2548,7 +2549,8 @@ static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) struct file_info *fi = file->private_data; int ret; - mutex_lock(&fi->state_mutex); + if (!mutex_trylock(&fi->state_mutex)) + return -EAGAIN; if (fi->iso_state == RAW1394_ISO_INACTIVE) ret = -EINVAL; @@ -2669,7 +2671,8 @@ static long raw1394_ioctl(struct file *file, unsigned int cmd, break; } - mutex_lock(&fi->state_mutex); + if (!mutex_trylock(&fi->state_mutex)) + return -EAGAIN; switch (fi->iso_state) { case RAW1394_ISO_INACTIVE: |