On Tue, 25 Sep 2007 22:45:53 -0500
James Bottomley <James.Bottomley@xxxxxxxxxxxx> wrote:
> On Tue, 2007-09-25 at 23:34 -0400, Jeff Garzik wrote:
> > Matthew Wilcox wrote:
> > > On Tue, Sep 25, 2007 at 10:37:33PM -0400, Jeff Garzik wrote:
> > >> Are there any const-ness worries for scsi_host_template, or plans for
> > >> the future? I do not see any other examples of the host template
> > >> members getting modified.
> > >
> > > Goodness, Jeff, you haven't looked too hard. There's dozens of examples
> > > I've come across trawling the horrible unmaintained drivers. I'd love
> > > to see scsi_host_template become const, but it's not happening any time
> > > soon, and we can address this little piece when the time comes.
> >
> > Well, sure, the driver is the owner of that memory.
> >
> > We're talking about common code.
> >
> > If everybody agrees SHT is R/W in the core, Fujita-san's patch is fine.
>
> Well, I don't like mucking with the template either.
>
> This whole mess is generated basically because the zero default of the
> template should be treated as initiator. How about this, which makes
> that manifest?
>
> James
>
> diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
> index adc9559..7e26440 100644
> --- a/drivers/scsi/hosts.c
> +++ b/drivers/scsi/hosts.c
> @@ -342,7 +342,11 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
> shost->unchecked_isa_dma = sht->unchecked_isa_dma;
> shost->use_clustering = sht->use_clustering;
> shost->ordered_tag = sht->ordered_tag;
> - shost->active_mode = sht->supported_mode;
> + if (sht->supported_mode == MODE_UNKNOWN)
> + /* means we didn't set it ... default to INITIATOR */
> + shost->active_mode = MODE_INITIATOR;
> + else
> + shost->active_mode = sht->supported_mode;
>
> if (sht->max_host_blocked)
> shost->max_host_blocked = sht->max_host_blocked;
> diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
> index 0088c4d..4965e9e 100644
> --- a/drivers/scsi/scsi_sysfs.c
> +++ b/drivers/scsi/scsi_sysfs.c
> @@ -209,11 +209,13 @@ show_shost_mode(unsigned int mode, char *buf)
> static ssize_t show_shost_supported_mode(struct class_device *class_dev, char *buf)
> {
> struct Scsi_Host *shost = class_to_shost(class_dev);
> + unsigned int supported_mode = shost->hostt->supported_mode;
>
> - if (shost->hostt->supported_mode == MODE_UNKNOWN)
> - return snprintf(buf, 20, "unknown\n");
> - else
> - return show_shost_mode(shost->hostt->supported_mode, buf);
> + if (supported_mode == MODE_UNKNOWN)
> + /* by default this should be initiator */
> + supported_mode = MODE_INITIATOR;
> +
> + return show_shost_mode(shost->hostt->supported_mode, buf);
should be:
return show_shost_mode(supported_mode, buf);
>
> static CLASS_DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL);
>
-
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