pmac_zilog: insert correct failure path for device numbers being taken
Quoted 4 lines
I'll talk to him at KS/OLS and see if we can come up with some solution, this is actually a regression since 2.4 could "offset" macserial, so we could accomodate, for example, a driver for a pcmcia modem _and_ the zilog ports.
That's the wrong way around. The zilog ports are always there, and thus could have stable numbers. The PCMCIA ports can not have stable numbers; they might be gone even.
In general, the platform-specific (motherboard, generally) ports should get to grab device numbers first. Anthing connected by a normally hot-plug bus goes last. Plain PCI is in the middle, because PCI cards are occasionally moved.
For a PC, serial ports hanging off the motherboard's LPC bus (what amounts to built-in ISA) should go before serial ports that might be on normal PCI cards, which in turn go before those on PCMCIA.
Quoted 8 lines · Albert Cahalan
Quoted 4 lines
I'll talk to him at KS/OLS and see if we can come up with some solution, this is actually a regression since 2.4 could "offset" macserial, so we could accomodate, for example, a driver for a pcmcia modem _and_ the zilog ports.
That's the wrong way around. The zilog ports are always there, and thus could have stable numbers. The PCMCIA ports can not have stable numbers; they might be gone even.
Nice ideal vision ...
Quoted 4 lines
In general, the platform-specific (motherboard, generally) ports should get to grab device numbers first. Anthing connected by a normally hot-plug bus goes last. Plain PCI is in the middle, because PCI cards are occasionally moved.
I'm not talking about the best solution that will make everybody happy, but at this point in 2.6, whatever will fix the problem, I doubt russel would accept a patch changing the 8250 driver in any significant way
Quoted 4 lines
For a PC, serial ports hanging off the motherboard's LPC bus (what amounts to built-in ISA) should go before serial ports that might be on normal PCI cards, which in turn go before those on PCMCIA.
Signature · 1 line
Benjamin Herrenschmidt <[email protected]>