Messages in this thread | | | Date | Wed, 9 Jul 2014 09:59:10 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH v9 3/7] ata: libahci: allow to use multiple PHYs |
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Hello,
On Wed, Jul 09, 2014 at 10:23:31AM +0200, Antoine Ténart wrote: > > It is confusing. If you wanna pass around available ports in hpriv, > > please add a separate field and replace the arguments to > > save_initial_config(). > > I don't get it. Which argument should I replace in > save_initial_config()? The change is we compute hpriv->port_map. > I don't see which arguments we can add or replace.
The @force_port_map and @mask_port_map of ahci_save_initial_config(). We end up with three params from two places modifying port_map and one of those is in/out parameter, so ummm, no. If you wanna add port masking to @hpriv, please do it by moving @force_port_map and @mask_port_map into @hpriv instead.
Sure, the proposed change is small but the end result is messy.
> I had a quick look on this, and it does not seems to be that simple. The > ahci_port_priv is stored inside the ata_port struct and not accessible > (as of now) from the ahci_host_priv one. The ahci_port_priv is > initialized at the end of ahci_platform_init_host(), far after we need > it. This requires quite a lot of changes. Or is there another way?
Yeah, it'd probably need separating out port resource handling, so that the order is get_resources, host_alloc, get_port_resources and then init and activate. Hans, what do you think?
> To be honest, we are now at v9 and it's been quite a long time since v1. > I'd really like it to be merged in 3.17. As I see it, this patch keeps > the same logic as what was in place before, only with more PHYs. > > Don't take me wrong, I really think this is a good idea to have a > per-port PHY information. But this is a refactoring not clearly related > to this series as the logic is not changed. This definitively can be the > subject of a dedicated series, especially if I got it right and the > required modifications are not that obvious.
Heh, I get that but, at the same time, this is the point where you're most motivated to actually work on it. :)
Let's see how much work it's gonna be.
Thanks.
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