serial: core: Add minor field to uart_port

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UART drivers that share ttyS namespace cannot trivially compute the
ttyS index from the port->line value since the minor_start may be
offset from minor 64. Further, to do so requires a pointer to the
uart driver since there is no back pointer from uart_port to
uart_driver.

Rather than have UART drivers computing the minor value by themselves,
encapsulate within the serial core at port registration time.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Peter Hurley 2015-02-24 14:25:00 -05:00 • committed by Greg Kroah-Hartman

parent d3157b2ca5

commit 959801fef9

2 changed files with 2 additions and 0 deletions

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include/linux/serial_core.h

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