evie/android_kernel_oneplus_msm8998
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staging: comedi: mite: pass subdevice to mite_sync_input_dma()

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`mite_sync_input_dma()` in the "mite" module currently takes a pointer
to a `struct comedi_async` and gets a pointer to the owning `struct
comedi_subdevice` from the `subdevice` member.  Change it to take a
pointer to a `struct comedi_subdevice` and use the `async` member.

The motivation for this is to eliminate the `subdevice` member of
`struct comedi_async`.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2014-05-06 13:12:16 +01:00 • committed by Greg Kroah-Hartman
parent b74e635d1c
commit 74f63db7ae
6 changed files with 8 additions and 8 deletions
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4
drivers/staging/comedi/drivers/mite.c
View file

@ -526,9 +526,9 @@ void mite_dma_disarm(struct mite_channel *mite_chan)
EXPORT_SYMBOL_GPL(mite_dma_disarm);
int mite_sync_input_dma(struct mite_channel *mite_chan,
struct comedi_async *async)
struct comedi_subdevice *s)
{
struct comedi_subdevice *s = async->subdevice;
struct comedi_async *async = s->async;
int count;
unsigned int nbytes, old_alloc_count;

2
drivers/staging/comedi/drivers/mite.h
View file

@ -106,7 +106,7 @@ unsigned mite_dma_tcr(struct mite_channel *mite_chan);
void mite_dma_arm(struct mite_channel *mite_chan);
void mite_dma_disarm(struct mite_channel *mite_chan);
int mite_sync_input_dma(struct mite_channel *mite_chan,
struct comedi_async *async);
struct comedi_subdevice *s);
int mite_sync_output_dma(struct mite_channel *mite_chan,
struct comedi_async *async);
u32 mite_bytes_written_to_memory_lb(struct mite_channel *mite_chan);

2
drivers/staging/comedi/drivers/ni_660x.c
View file

@ -823,7 +823,7 @@ static int ni_660x_input_poll(struct comedi_device *dev,
/* lock to avoid race with comedi_poll */
spin_lock_irqsave(&devpriv->interrupt_lock, flags);
mite_sync_input_dma(counter->mite_chan, s->async);
mite_sync_input_dma(counter->mite_chan, s);
spin_unlock_irqrestore(&devpriv->interrupt_lock, flags);
return comedi_buf_read_n_available(s);
}

2
drivers/staging/comedi/drivers/ni_mio_common.c
View file

@ -864,7 +864,7 @@ static void ni_sync_ai_dma(struct comedi_device *dev)
spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
if (devpriv->ai_mite_chan)
mite_sync_input_dma(devpriv->ai_mite_chan, s->async);
mite_sync_input_dma(devpriv->ai_mite_chan, s);
spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);
}

4
drivers/staging/comedi/drivers/ni_pcidio.c
View file

@ -359,7 +359,7 @@ static int ni_pcidio_poll(struct comedi_device *dev, struct comedi_subdevice *s)
spin_lock_irqsave(&dev->spinlock, irq_flags);
spin_lock(&devpriv->mite_channel_lock);
if (devpriv->di_mite_chan)
mite_sync_input_dma(devpriv->di_mite_chan, s->async);
mite_sync_input_dma(devpriv->di_mite_chan, s);
spin_unlock(&devpriv->mite_channel_lock);
count = s->async->buf_write_count - s->async->buf_read_count;
spin_unlock_irqrestore(&dev->spinlock, irq_flags);
@ -405,7 +405,7 @@ static irqreturn_t nidio_interrupt(int irq, void *d)
writel(CHOR_CLRLC,
mite->mite_io_addr +
MITE_CHOR(devpriv->di_mite_chan->channel));
mite_sync_input_dma(devpriv->di_mite_chan, s->async);
mite_sync_input_dma(devpriv->di_mite_chan, s);
/* XXX need to byteswap */
}
if (m_status & ~(CHSR_INT | CHSR_LINKC | CHSR_DONE | CHSR_DRDY |

2
drivers/staging/comedi/drivers/ni_tiocmd.c
View file

@ -464,7 +464,7 @@ void ni_tio_handle_interrupt(struct ni_gpct *counter,
counter->mite_chan->mite->mite_io_addr +
MITE_CHOR(counter->mite_chan->channel));
}
mite_sync_input_dma(counter->mite_chan, s->async);
mite_sync_input_dma(counter->mite_chan, s);
spin_unlock_irqrestore(&counter->lock, flags);
}
EXPORT_SYMBOL_GPL(ni_tio_handle_interrupt);