Linux PCI subsystem development
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From: "Krzysztof Wilczyński" <kw@linux.com>
To: Amey Narkhede <ameynarkhede03@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	alex.williamson@redhat.com, raphael.norwitz@nutanix.com,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND v2 1/7] PCI: merge slot and bus reset implementations
Date: Thu, 20 May 2021 16:54:50 +0200	[thread overview]
Message-ID: <20210520145450.GA641812@rocinante.localdomain> (raw)
In-Reply-To: <20210519235426.99728-2-ameynarkhede03@gmail.com>

Hi Amey,

Thank you for working on this!  Few comments and suggestions below.

[...]
> Link: https://lkml.org/lkml/2021/3/23/911

Linking to lkml.org is fine, however it became a canon now to link to
lore, so this would be:

  https://lore.kernel.org/lkml/20210323100625.0021a943@omen.home.shazbot.org/

I personally find it a bit easier to read on lore compared to lkml.org
when it goes to a large and long running threads.

[...]
> +int pci_reset_bus_function(struct pci_dev *dev, int probe)
> +{
> +	int rc = pci_dev_reset_slot_function(dev, probe);
> +
> +	if (rc != -ENOTTY)
> +		return rc;
> +	return pci_parent_bus_reset(dev, probe);
> +}

Depends on the style, but I would suggest using a boolean type for the
probe argument here and in the other functions that enable or disable
something.  I makes the intent clear, and this is also a popular pattern
you can see throughout the PCI tree.

Also, I would suggest adding a newline to separate final return, so that
it's easier to read the code, and to keep things consistent.

[...]
> -	rc = pci_dev_reset_slot_function(dev, 0);
> -	if (rc != -ENOTTY)
> -		return rc;
> -	return pci_parent_bus_reset(dev, 0);
> +	return pci_reset_bus_function(dev, 0);

See above about using boolean type here.

[...]
> -	rc = pci_dev_reset_slot_function(dev, 1);
>  	if (rc != -ENOTTY)
>  		return rc;
>  
> -	return pci_parent_bus_reset(dev, 1);
> +	return pci_reset_bus_function(dev, 1);

Same as above.

Krzysztof

  reply	other threads:[~2021-05-20 14:54 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-19 23:54 [PATCH RESEND v2 0/7] Expose and manage PCI device reset Amey Narkhede
2021-05-19 23:54 ` [PATCH RESEND v2 1/7] PCI: merge slot and bus reset implementations Amey Narkhede
2021-05-20 14:54   ` Krzysztof Wilczyński [this message]
2021-05-19 23:54 ` [PATCH RESEND v2 2/7] PCI: Add pcie_reset_flr to follow calling convention of other reset methods Amey Narkhede
2021-05-20 15:05   ` Krzysztof Wilczyński
2021-05-24 14:48     ` Amey Narkhede
2021-05-25 15:17       ` Krzysztof Wilczyński
2021-05-25 16:03         ` Amey Narkhede
2021-05-19 23:54 ` [PATCH RESEND v2 3/7] PCI: Add new array for keeping track of ordering of " Amey Narkhede
2021-05-20 15:26   ` Krzysztof Wilczyński
2021-05-19 23:54 ` [PATCH RESEND v2 4/7] PCI: Remove reset_fn field from pci_dev Amey Narkhede
2021-05-19 23:54 ` [PATCH RESEND v2 5/7] PCI/sysfs: Allow userspace to query and set device reset mechanism Amey Narkhede
2021-05-20 16:37   ` Krzysztof Wilczyński
2021-05-19 23:54 ` [PATCH RESEND v2 6/7] PCI: Add support for a function level reset based on _RST method Amey Narkhede
2021-05-19 23:54 ` [PATCH RESEND v2 7/7] PCI: Enable NO_BUS_RESET quirk for Nvidia GPUs Amey Narkhede

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