Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1651087 > unrolled thread

Re: [PATCH v2] PCI/msi: fix the pci_alloc_irq_vectors_affinity stub

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: [PATCH v2] PCI/msi: fix the pci_alloc_irq_vectors_affinity stub Christoph Hellwig <hch@lst.de> - 2017-05-26 07:50 +0200
    Re: [PATCH v2] PCI/msi: fix the pci_alloc_irq_vectors_affinity stub Linus Torvalds <torvalds@linux-foundation.org> - 2017-05-26 17:50 +0200

#1651087 — Re: [PATCH v2] PCI/msi: fix the pci_alloc_irq_vectors_affinity stub

Bjorn,

can you take this regression fix and sent it to Linux before -rc3?
I had hope we could get it into -rc2 but already missed that, and
I haven't heard a comment since..

On Sat, May 20, 2017 at 06:59:54PM +0200, Christoph Hellwig wrote:
> We need to return an error for any call that asks for MSI / MSI-X
> vectors only, so that non-trivial fallback logic can work properly.
> 
> Also valid dev->irq and use the "correct" errno value based on feedback
> from Linus.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reported-by: Steven Rostedt <rostedt@goodmis.org>
> Fixes: aff17164 ("PCI: Provide sensible IRQ vector alloc/free routines")
> ---
> 
> Changes from V1:
>  - use == comparism
>  - return -ENOSPC
>  - verify dev->irq
> 
>  include/linux/pci.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 33c2b0b77429..fc2e832d7b9c 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -1342,9 +1342,9 @@ pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
>  			       unsigned int max_vecs, unsigned int flags,
>  			       const struct irq_affinity *aff_desc)
>  {
> -	if (min_vecs > 1)
> -		return -EINVAL;
> -	return 1;
> +	if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1 && dev->irq)
> +		return 1;
> +	return -ENOSPC;
>  }
>  
>  static inline void pci_free_irq_vectors(struct pci_dev *dev)
> -- 
> 2.11.0
---end quoted text---

[toc] | [next] | [standalone]

#1651443

On Thu, May 25, 2017 at 10:46 PM, Christoph Hellwig <hch@lst.de> wrote:
> Bjorn,
>
> can you take this regression fix and sent it to Linux before -rc3?
> I had hope we could get it into -rc2 but already missed that, and
> I haven't heard a comment since..

I took it directly..

                 Linus

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web