From b876e985c2273b7bd2d5539f2147ef69f7701129 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Fri, 20 Jun 2014 11:10:35 -0700 Subject: [PATCH] staging: comedi: mite: cleanup mite_unsetup() This function is only called by comedi drivers during the (*detach) of the driver. After it is called mite_free() is always called to kfree the allocated mite_struct pointer. Rename this function to mite_detach() and merge the kfree() from mite_free() into it. Remove the unnecessary clearing of the mite variables since the mite pointer is going to be kfree()'d anyway. The mite_detach() function checks if the pointer is valid so remove the unnecessary checks in the callers. The check can also be removed in ni_660x since the ni_660x_free_mite_rings() function does not actually need the 'mite' pointer. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/mite.c | 18 ++++++------------ drivers/staging/comedi/drivers/mite.h | 7 +------ drivers/staging/comedi/drivers/ni_65xx.c | 8 ++------ drivers/staging/comedi/drivers/ni_660x.c | 7 ++----- drivers/staging/comedi/drivers/ni_670x.c | 6 ++---- drivers/staging/comedi/drivers/ni_labpc_pci.c | 6 ++---- drivers/staging/comedi/drivers/ni_pcidio.c | 5 +---- drivers/staging/comedi/drivers/ni_pcimio.c | 5 +---- 8 files changed, 17 insertions(+), 45 deletions(-) diff --git a/drivers/staging/comedi/drivers/mite.c b/drivers/staging/comedi/drivers/mite.c index 19c029acbc99..52d154886c4f 100644 --- a/drivers/staging/comedi/drivers/mite.c +++ b/drivers/staging/comedi/drivers/mite.c @@ -173,25 +173,19 @@ int mite_setup(struct mite_struct *mite) } EXPORT_SYMBOL_GPL(mite_setup); -void mite_unsetup(struct mite_struct *mite) +void mite_detach(struct mite_struct *mite) { - /* unsigned long offset, start, length; */ - if (!mite) return; - if (mite->mite_io_addr) { + if (mite->mite_io_addr) iounmap(mite->mite_io_addr); - mite->mite_io_addr = NULL; - } - if (mite->daq_io_addr) { + if (mite->daq_io_addr) iounmap(mite->daq_io_addr); - mite->daq_io_addr = NULL; - } - if (mite->mite_phys_addr) - mite->mite_phys_addr = 0; + + kfree(mite); } -EXPORT_SYMBOL_GPL(mite_unsetup); +EXPORT_SYMBOL_GPL(mite_detach); struct mite_dma_descriptor_ring *mite_alloc_ring(struct mite_struct *mite) { diff --git a/drivers/staging/comedi/drivers/mite.h b/drivers/staging/comedi/drivers/mite.h index 5137e18707fb..a4852cbd5b31 100644 --- a/drivers/staging/comedi/drivers/mite.h +++ b/drivers/staging/comedi/drivers/mite.h @@ -65,14 +65,9 @@ struct mite_struct { struct mite_struct *mite_alloc(struct pci_dev *pcidev); -static inline void mite_free(struct mite_struct *mite) -{ - kfree(mite); -} - int mite_setup(struct mite_struct *mite); int mite_setup2(struct mite_struct *mite, unsigned use_iodwbsr_1); -void mite_unsetup(struct mite_struct *mite); +void mite_detach(struct mite_struct *mite); struct mite_dma_descriptor_ring *mite_alloc_ring(struct mite_struct *mite); void mite_free_ring(struct mite_dma_descriptor_ring *ring); struct mite_channel *mite_request_channel_in_range(struct mite_struct *mite, diff --git a/drivers/staging/comedi/drivers/ni_65xx.c b/drivers/staging/comedi/drivers/ni_65xx.c index 6e28603339b4..59f592e0ca76 100644 --- a/drivers/staging/comedi/drivers/ni_65xx.c +++ b/drivers/staging/comedi/drivers/ni_65xx.c @@ -716,12 +716,8 @@ static void ni_65xx_detach(struct comedi_device *dev) } if (dev->irq) free_irq(dev->irq, dev); - if (devpriv) { - if (devpriv->mite) { - mite_unsetup(devpriv->mite); - mite_free(devpriv->mite); - } - } + if (devpriv) + mite_detach(devpriv->mite); comedi_pci_disable(dev); } diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c index 5f80bcabd40d..27d435f2565b 100644 --- a/drivers/staging/comedi/drivers/ni_660x.c +++ b/drivers/staging/comedi/drivers/ni_660x.c @@ -1195,11 +1195,8 @@ static void ni_660x_detach(struct comedi_device *dev) if (devpriv) { if (devpriv->counter_dev) ni_gpct_device_destroy(devpriv->counter_dev); - if (devpriv->mite) { - ni_660x_free_mite_rings(dev); - mite_unsetup(devpriv->mite); - mite_free(devpriv->mite); - } + ni_660x_free_mite_rings(dev); + mite_detach(devpriv->mite); } comedi_pci_disable(dev); } diff --git a/drivers/staging/comedi/drivers/ni_670x.c b/drivers/staging/comedi/drivers/ni_670x.c index 1002ceacfdcc..b487f8d9eeed 100644 --- a/drivers/staging/comedi/drivers/ni_670x.c +++ b/drivers/staging/comedi/drivers/ni_670x.c @@ -259,10 +259,8 @@ static void ni_670x_detach(struct comedi_device *dev) if (s) kfree(s->range_table_list); } - if (devpriv && devpriv->mite) { - mite_unsetup(devpriv->mite); - mite_free(devpriv->mite); - } + if (devpriv) + mite_detach(devpriv->mite); comedi_pci_disable(dev); } diff --git a/drivers/staging/comedi/drivers/ni_labpc_pci.c b/drivers/staging/comedi/drivers/ni_labpc_pci.c index 384c427092e4..358c4af3e174 100644 --- a/drivers/staging/comedi/drivers/ni_labpc_pci.c +++ b/drivers/staging/comedi/drivers/ni_labpc_pci.c @@ -91,10 +91,8 @@ static void labpc_pci_detach(struct comedi_device *dev) { struct labpc_private *devpriv = dev->private; - if (devpriv && devpriv->mite) { - mite_unsetup(devpriv->mite); - mite_free(devpriv->mite); - } + if (devpriv) + mite_detach(devpriv->mite); if (dev->irq) free_irq(dev->irq, dev); comedi_pci_disable(dev); diff --git a/drivers/staging/comedi/drivers/ni_pcidio.c b/drivers/staging/comedi/drivers/ni_pcidio.c index b9de13235019..4d6b2ed9ac7b 100644 --- a/drivers/staging/comedi/drivers/ni_pcidio.c +++ b/drivers/staging/comedi/drivers/ni_pcidio.c @@ -1046,10 +1046,7 @@ static void nidio_detach(struct comedi_device *dev) mite_free_ring(devpriv->di_mite_ring); devpriv->di_mite_ring = NULL; } - if (devpriv->mite) { - mite_unsetup(devpriv->mite); - mite_free(devpriv->mite); - } + mite_detach(devpriv->mite); } comedi_pci_disable(dev); } diff --git a/drivers/staging/comedi/drivers/ni_pcimio.c b/drivers/staging/comedi/drivers/ni_pcimio.c index d72cc6f8aab2..20c839b45752 100644 --- a/drivers/staging/comedi/drivers/ni_pcimio.c +++ b/drivers/staging/comedi/drivers/ni_pcimio.c @@ -1189,10 +1189,7 @@ static void pcimio_detach(struct comedi_device *dev) mite_free_ring(devpriv->cdo_mite_ring); mite_free_ring(devpriv->gpct_mite_ring[0]); mite_free_ring(devpriv->gpct_mite_ring[1]); - if (devpriv->mite) { - mite_unsetup(devpriv->mite); - mite_free(devpriv->mite); - } + mite_detach(devpriv->mite); } comedi_pci_disable(dev); } -- 2.11.0