diff options
| author | Alessio Igor Bogani <abogani@texware.it> | 2010-05-18 13:12:32 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-18 14:53:17 -0700 |
| commit | 7ec52ed25013533248d929d4405225d30c4272b2 (patch) | |
| tree | 99ed8331386f46fd927073f2dbca2bf30c14f0af /drivers/staging | |
| parent | a57941c2e7a79d5143a63c06c06be36f786d5241 (diff) | |
Staging: comedi: quatech_daqp_cs.c Replace eos semaphore with a completion.
Build tested only.
Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/comedi/drivers/quatech_daqp_cs.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c index be62face6a7..d77ae81dd12 100644 --- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c +++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c @@ -55,6 +55,8 @@ Devices: [Quatech] DAQP-208 (daqp), DAQP-308 #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> +#include <linux/completion.h> + /* Maximum number of separate DAQP devices we'll allow */ #define MAX_DEV 4 @@ -67,7 +69,7 @@ struct local_info_t { enum { semaphore, buffer } interrupt_mode; - struct semaphore eos; + struct completion eos; struct comedi_device *dev; struct comedi_subdevice *s; @@ -238,7 +240,7 @@ static int daqp_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) /* Interrupt handler * * Operates in one of two modes. If local->interrupt_mode is - * 'semaphore', just signal the local->eos semaphore and return + * 'semaphore', just signal the local->eos completion and return * (one-shot mode). Otherwise (continuous mode), read data in from * the card, transfer it to the buffer provided by the higher-level * comedi kernel module, and signal various comedi callback routines, @@ -287,7 +289,7 @@ static enum irqreturn daqp_interrupt(int irq, void *dev_id) case semaphore: - up(&local->eos); + complete(&local->eos); break; case buffer: @@ -401,8 +403,7 @@ static int daqp_ai_insn_read(struct comedi_device *dev, return -1; } - /* Make sure semaphore is blocked */ - sema_init(&local->eos, 0); + init_completion(&local->eos); local->interrupt_mode = semaphore; local->dev = dev; local->s = s; @@ -413,9 +414,9 @@ static int daqp_ai_insn_read(struct comedi_device *dev, outb(DAQP_COMMAND_ARM | DAQP_COMMAND_FIFO_DATA, dev->iobase + DAQP_COMMAND); - /* Wait for interrupt service routine to unblock semaphore */ + /* Wait for interrupt service routine to unblock completion */ /* Maybe could use a timeout here, but it's interruptible */ - if (down_interruptible(&local->eos)) + if (wait_for_completion_interruptible(&local->eos)) return -EINTR; data[i] = inb(dev->iobase + DAQP_FIFO); |