staging/comedi/das16: Make timer initialization unconditional
With timer initialization made unconditional, there is no reason to make del_timer_sync() calls conditionally, there by removing the test of the .data field. Cc: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: devel@driverdev.osuosl.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -934,6 +934,9 @@ static void das16_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
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{
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struct das16_private_struct *devpriv = dev->private;
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setup_timer(&devpriv->timer, das16_timer_interrupt,
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(unsigned long)dev);
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/* only DMA channels 3 and 1 are valid */
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if (!(dma_chan == 1 || dma_chan == 3))
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return;
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@ -941,10 +944,6 @@ static void das16_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
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/* DMA uses two buffers */
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devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
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DAS16_DMA_SIZE, COMEDI_ISADMA_READ);
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if (devpriv->dma) {
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setup_timer(&devpriv->timer, das16_timer_interrupt,
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(unsigned long)dev);
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}
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}
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static void das16_free_dma(struct comedi_device *dev)
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@ -952,8 +951,7 @@ static void das16_free_dma(struct comedi_device *dev)
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struct das16_private_struct *devpriv = dev->private;
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if (devpriv) {
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if (devpriv->timer.data)
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del_timer_sync(&devpriv->timer);
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del_timer_sync(&devpriv->timer);
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comedi_isadma_free(devpriv->dma);
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}
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}
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