diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-12-05 16:54:11 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-06 13:10:03 -0800 |
| commit | 25ad998892c05cf1a3f14ac882af8edbb8f62cc8 (patch) | |
| tree | 369ce88115f67496982f27d862b491024433992f /drivers | |
| parent | 4344158f3ea32eefd4942915c76d35afdc11b76e (diff) | |
staging: comedi: pcmuio: document the spinlock_t variables
Add some comments about the two spinlock_t variables in the private
data. Also, add come comments for the functions that do not need to
lock/unlock the spinlock.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/comedi/drivers/pcmuio.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/staging/comedi/drivers/pcmuio.c b/drivers/staging/comedi/drivers/pcmuio.c index 6ee876d9905a..c83f5bd686cc 100644 --- a/drivers/staging/comedi/drivers/pcmuio.c +++ b/drivers/staging/comedi/drivers/pcmuio.c @@ -128,8 +128,8 @@ static const struct pcmuio_board pcmuio_boards[] = { }; struct pcmuio_asic { - spinlock_t pagelock; - spinlock_t spinlock; + spinlock_t pagelock; /* protects the page registers */ + spinlock_t spinlock; /* protects member variables */ int enabled_mask; int active; int stop_count; @@ -295,6 +295,7 @@ static void pcmuio_reset(struct comedi_device *dev) } } +/* chip->spinlock is already locked */ static void pcmuio_stop_intr(struct comedi_device *dev, struct comedi_subdevice *s) { @@ -403,6 +404,7 @@ static irqreturn_t pcmuio_interrupt(int irq, void *d) return handled ? IRQ_HANDLED : IRQ_NONE; } +/* chip->spinlock is already locked */ static int pcmuio_start_intr(struct comedi_device *dev, struct comedi_subdevice *s) { |