Hi:
Pass port info from the platform data is a good idea.
About the codes duplication in the board level, I think that we can
re-use the default  port info on most boards, when the ata_port_info
is null in the platform data struct.
We can leave the ahci_platform.c without any modifications in this way.

How do you guys think about?

Best Regard
Richard Zhu


On 29 August 2011 20:25, Eric Miao [off-list ref] wrote:

On Mon, Aug 29, 2011 at 8:12 PM, Anton Vorontsov [off-list ref] wrote:

quoted

Hello,

On Mon, Aug 29, 2011 at 03:18:55PM +0800, Richard Zhu wrote:

quoted

On imx53 AHCI, soft reset fails with IPMS set when PMP
is enabled but SATA HDD/ODD is connected to SATA port,
do soft reset again to port 0.
So the 'ahci_pmp_retry_srst_ops' is required when imx53
ahci is present.

Signed-off-by: Richard Zhu <redacted>
---

[...]

quoted

? ? ? struct device *dev = &pdev->dev;
? ? ? struct ahci_platform_data *pdata = dev->platform_data;
- ? ? struct ata_port_info pi = {
- ? ? ? ? ? ? .flags ? ? ? ? ?= AHCI_FLAG_COMMON,
- ? ? ? ? ? ? .pio_mask ? ? ? = ATA_PIO4,
- ? ? ? ? ? ? .udma_mask ? ? ?= ATA_UDMA6,
- ? ? ? ? ? ? .port_ops ? ? ? = &ahci_ops,
- ? ? };
+ ? ? struct platform_device_id *id_entry = platform_get_device_id(pdev);
+ ? ? struct ata_port_info pi = ahci_port_info[id_entry->driver_data];

Why not pass port info via platform_data? It seems to be platform
specific nowadays, so leave the default as is, but let the platforms
pass their own port info through platform_data.

That's also a very clean way. However I have the concern that it might
end up with many duplicate entries.

quoted

Thanks,

--
Anton Vorontsov
Email: cbouatmailru at gmail.com

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