Messages in this thread | | | Date | Tue, 24 Apr 2012 19:12:10 +0530 | Subject | Re: [PATCH V3 07/12] ata/sata_mv: Remove conditional compilation of clk code | From | viresh kumar <> |
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On 4/24/12, Andrew Lunn <andrew@lunn.ch> wrote: > Sorry, but still wrong. > > The clock is optional. If we can find a clock, turn it on. If not, > keep going.... > > You patch causes the missing clock to become a fatal error. > > This sata_mv exists in multiple forms. It can be part of a SoC. It can > also be on a PCI bus. In the PCI form, it is unlikely to have a clk > which can be controlled. When built into a SoC, namely one of the > Orion family, dove, orion5x, mv78xx0 do not have a clock which can be > controlled. However kirkwood does have a clock. > > So, kirkwood will provide a clock and expects that sata_mv will turn > it on. All the other ways of using sata_mv will not provide a clock, > but still expect the driver to be happy.
Hmm. What this code does now is: If HAVE_CLK is selected, then there must be a clock for the device. Otherwise it will always pass.
You want not to return error if a platform does have HAVE_CLK, but doesn't have a clock for sata? That would be simple to fix, but want to confirm if this is actually required.
@Russell: Can we have your view also?
-- viresh
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