Re: [PATCH] PCI Error Recovery: Symbios SCSI device driver

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On Wed, Jan 18, 2006 at 10:53:45AM -0600, linas wrote:
> Hi James,

Actually, I'm the sym2 maintainer.

> +static void sym_eeh_timeout(u_long p)

Please don't propagate more uses of this u_long crap.  I haven't got
rid of all of them, but there's no need to add more.

> @@ -1630,6 +1682,8 @@ static struct Scsi_Host * __devinit sym_
>  	np->maxoffs	= dev->chip.offset_max;
>  	np->maxburst	= dev->chip.burst_max;
>  	np->myaddr	= dev->host_id;
> +	np->s.io_state = pci_channel_io_normal;
> +	np->s.io_reset_wait = NULL;

Is there a good reason to put them in the 's'?  It's really a dirty
hack.

> +/* ------------- PCI Error Recovery infrastructure -------------- */
> +/** sym2_io_error_detected() is called when PCI error is detected */
> +static pci_ers_result_t sym2_io_error_detected (struct pci_dev *pdev, pci_channel_state_t state)
> +{
> +	struct sym_hcb *np = pci_get_drvdata(pdev);
> +
> +	np->s.io_state = state;
> +	// XXX If slot is permanently frozen, then what?
> +	// Should we scsi_remove_host() maybe ??
> +
> +	/* Request a slot slot reset. */
> +	return PCI_ERS_RESULT_NEED_RESET;
> +}

Don't use C99 comments, don't put a space between the function name and
the opening bracket, and don't exceed 80 columns.

> +/** sym2_io_slot_reset is called when the pci bus has been reset.
> + *  Restart the card from scratch. */

kerneldoc style comment, but not in kerneldoc format.

> +	/* Perform host reset only on one instance of the card */
> +	if (0 == PCI_FUNC (pdev->devfn))

I really hate "if (constant == variable)".

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