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serial: 8250: allow specifying iomem size in addition to address

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This adds a mapsize field to struct uart_port to be used in
conjunction with mapbase. If set, it overrides whatever value
serial8250_port_size() would otherwise report.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mans Rullgard 2015-03-08 14:30:04 +00:00 • committed by Greg Kroah-Hartman
parent 5ef86b7420
commit ee97d0e3f0
2 changed files with 5 additions and 0 deletions
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1
include/linux/serial_core.h
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@ -237,6 +237,7 @@ struct uart_port {
unsigned int line; /* port index */
unsigned int minor;
resource_size_t mapbase; /* for ioremap */
resource_size_t mapsize;
struct device *dev; /* parent device */
unsigned char hub6; /* this should be in the 8250 driver */
unsigned char suspended;