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SubjectRe: [PATCH 3/3] tty: serial: Check UPF_FOURPORT, when CONFIG_SERIAL_8250_FOURPORT is defined
On Fri, 11 Mar 2011 21:58:12 +0900
Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> wrote:

> When CONFIG_SERIAL_8250_FOURPORT is defined, driver uses UPF_FOURPORT in port.flags.
> Though CONFIG_SERIAL_8250_FOURPORT is not defined, there is a case to check UPF_FOURPORT.
> When CONFIG_SERIAL_8250_FOURPORT is defined only, this checks UPF_FOURPORT.

Again all this can be avoided by defining WARN traps for the unsupported
I/O methods in your architecture.

Alan


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