On Sat, 2017-01-21 at 10:12 +0000, Winkler, Tomas wrote:
> >
> > > -struct mei_device *mei_txe_dev_init(struct pci_dev *pdev)
> > > +struct mei_device *devm_mei_txe_init(struct pci_dev *pdev)
> >
> > Ditto.
> >
> > > end:
> > > + pci_set_drvdata(pdev, NULL);
> >
> > Not needed.
>
> Please explain, we rely on pci_get_drvdata() returning NULL when
> unregistered.
PCI core will take care about this one. Actually device core for any of
user of struct device.
See __device_release_driver() for the details.
> >
> > > - free_irq(pdev->irq, dev);
> > > + devm_free_irq(&pdev->dev, pdev->irq, dev);
> > > pci_disable_msi(pdev);
> >
> > All three not needed
>
> I believe we need it on suspend as we are going over irq request
> again in resume. Please provide more info you if you still insist.
Ah, sorry, I missed that these are suspend/resume hooks.
So, Can you elaborate a bit why you need to disable interrupts during
system suspend?
(Basically in this case better not to use devm_request_*irq() at all)
> >
> > > return 0;
> > > @@ -75,22 +64,22 @@ static int mei_txe_probe(struct pci_dev *pdev,
> > > const struct pci_device_id *ent) {
> > > struct mei_device *dev;
> > > struct mei_txe_hw *hw;
> > > + const int mask = BIT(SEC_BAR) | BIT(BRIDGE_BAR);
> >
> > First line?
>
> Please be more verbose.
Use reversed tree for definition block.
The longest lines with the assignment = first;
Then lines without assignment;
Then return code variable;
Flags for spin_lock -- depends.
> >
> > > + memcpy(hw->mem_addr, pcim_iomap_table(pdev),
> > > + sizeof(hw->mem_addr));
> >
> > Why?
> > It is kept by PCI core, you don't need a copy.
>
> There is no simple accessor for that, it's easier to copy the two
> dwords then going over the function calls.
I'm not sure you need a copy. That function call just return the pointer
to the table.
I remember 8250_pci used to have similar approach, now it's using
whatever is kept by PCI core.
It's less error prone.
> > > @@ -256,7 +210,7 @@ static int mei_txe_pci_suspend(struct device
> > > *device)
> > > - free_irq(pdev->irq, dev);
> > > + devm_free_irq(&pdev->dev, pdev->irq, dev);
> > > pci_disable_msi(pdev);
> >
> > All are redundant.
Yeah, same clarification as for above case with system sleep.
--
Andy Shevchenko <andriy.shevche...@linux.intel.com>
Intel Finland Oy
