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Re: [PATCH v1 1/1] mei: me: use managed functions pcim_* and devm_*

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  Re: [PATCH v1 1/1] mei: me: use managed functions pcim_* and devm_* Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-10-14 15:30 +0200

#1500979 — Re: [PATCH v1 1/1] mei: me: use managed functions pcim_* and devm_*

On Sun, 2016-06-05 at 17:49 +0300, Andy Shevchenko wrote:
> On Mon, 2016-02-01 at 16:00 +0200, Andy Shevchenko wrote:
> > 
> > This makes the error handling much more simpler than open-coding
> > everything and
> > in addition makes the probe function smaller an tidier.
> > 
> 
> It's already one release cycle passed. What is the destiny of this
> change?

One more ping here.

> 
> > 
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > ---
> >  drivers/misc/mei/hw-me.c  |  4 ++--
> >  drivers/misc/mei/pci-me.c | 40 ++++++++----------------------------
> > ----
> >  2 files changed, 10 insertions(+), 34 deletions(-)
> > 
> > diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
> > index 25b1997..e26c4f4 100644
> > --- a/drivers/misc/mei/hw-me.c
> > +++ b/drivers/misc/mei/hw-me.c
> > @@ -1336,8 +1336,8 @@ struct mei_device *mei_me_dev_init(struct
> > pci_dev *pdev,
> >  	struct mei_device *dev;
> >  	struct mei_me_hw *hw;
> >  
> > -	dev = kzalloc(sizeof(struct mei_device) +
> > -			 sizeof(struct mei_me_hw), GFP_KERNEL);
> > +	dev = devm_kzalloc(&pdev->dev, sizeof(struct mei_device) +
> > +				       sizeof(struct mei_me_hw),
> > GFP_KERNEL);
> >  	if (!dev)
> >  		return NULL;
> >  	hw = to_me_hw(dev);
> > diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
> > index 75fc9c6..3c07a02 100644
> > --- a/drivers/misc/mei/pci-me.c
> > +++ b/drivers/misc/mei/pci-me.c
> > @@ -142,7 +142,7 @@ static int mei_me_probe(struct pci_dev *pdev,
> > const struct pci_device_id *ent)
> >  		return -ENODEV;
> >  
> >  	/* enable pci dev */
> > -	err = pci_enable_device(pdev);
> > +	err = pcim_enable_device(pdev);
> >  	if (err) {
> >  		dev_err(&pdev->dev, "failed to enable pci
> > device.\n");
> >  		goto end;
> > @@ -153,7 +153,7 @@ static int mei_me_probe(struct pci_dev *pdev,
> > const struct pci_device_id *ent)
> >  	err = pci_request_regions(pdev, KBUILD_MODNAME);
> >  	if (err) {
> >  		dev_err(&pdev->dev, "failed to get pci
> > regions.\n");
> > -		goto disable_device;
> > +		goto end;
> >  	}
> >  
> >  	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) ||
> > @@ -166,23 +166,22 @@ static int mei_me_probe(struct pci_dev *pdev,
> > const struct pci_device_id *ent)
> >  	}
> >  	if (err) {
> >  		dev_err(&pdev->dev, "No usable DMA configuration,
> > aborting\n");
> > -		goto release_regions;
> > +		goto end;
> >  	}
> >  
> > -
> >  	/* allocates and initializes the mei dev structure */
> >  	dev = mei_me_dev_init(pdev, cfg);
> >  	if (!dev) {
> >  		err = -ENOMEM;
> > -		goto release_regions;
> > +		goto end;
> >  	}
> >  	hw = to_me_hw(dev);
> >  	/* mapping  IO device memory */
> > -	hw->mem_addr = pci_iomap(pdev, 0, 0);
> > +	hw->mem_addr = pcim_iomap(pdev, 0, 0);
> >  	if (!hw->mem_addr) {
> >  		dev_err(&pdev->dev, "mapping I/O device memory
> > failure.\n");
> >  		err = -ENOMEM;
> > -		goto free_device;
> > +		goto end;
> >  	}
> >  	pci_enable_msi(pdev);
> >  
> > @@ -196,7 +195,7 @@ static int mei_me_probe(struct pci_dev *pdev,
> > const struct pci_device_id *ent)
> >  	if (err) {
> >  		dev_err(&pdev->dev, "request_threaded_irq failure.
> > irq = %d\n",
> >  		       pdev->irq);
> > -		goto disable_msi;
> > +		goto end;
> >  	}
> >  
> >  	if (mei_start(dev)) {
> > @@ -235,15 +234,6 @@ release_irq:
> >  	mei_cancel_work(dev);
> >  	mei_disable_interrupts(dev);
> >  	free_irq(pdev->irq, dev);
> > -disable_msi:
> > -	pci_disable_msi(pdev);
> > -	pci_iounmap(pdev, hw->mem_addr);
> > -free_device:
> > -	kfree(dev);
> > -release_regions:
> > -	pci_release_regions(pdev);
> > -disable_device:
> > -	pci_disable_device(pdev);
> >  end:
> >  	dev_err(&pdev->dev, "initialization failed.\n");
> >  	return err;
> > @@ -260,7 +250,6 @@ end:
> >  static void mei_me_remove(struct pci_dev *pdev)
> >  {
> >  	struct mei_device *dev;
> > -	struct mei_me_hw *hw;
> >  
> >  	dev = pci_get_drvdata(pdev);
> >  	if (!dev)
> > @@ -269,9 +258,6 @@ static void mei_me_remove(struct pci_dev *pdev)
> >  	if (mei_pg_is_enabled(dev))
> >  		pm_runtime_get_noresume(&pdev->dev);
> >  
> > -	hw = to_me_hw(dev);
> > -
> > -
> >  	dev_dbg(&pdev->dev, "stop\n");
> >  	mei_stop(dev);
> >  
> > @@ -282,20 +268,10 @@ static void mei_me_remove(struct pci_dev
> > *pdev)
> >  	mei_disable_interrupts(dev);
> >  
> >  	free_irq(pdev->irq, dev);
> > -	pci_disable_msi(pdev);
> > -
> > -	if (hw->mem_addr)
> > -		pci_iounmap(pdev, hw->mem_addr);
> >  
> >  	mei_deregister(dev);
> > -
> > -	kfree(dev);
> > -
> > -	pci_release_regions(pdev);
> > -	pci_disable_device(pdev);
> > -
> > -
> >  }
> > +
> >  #ifdef CONFIG_PM_SLEEP
> >  static int mei_me_pci_suspend(struct device *device)
> >  {
> 

-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

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