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serial: fix pch_uart kconfig & build 

The dma_request_channel/dma_release_channel interfaces are not
built when DMADEVICES is not enabled, so make the driver depend on
DMADEVICES.  Also, the help text says that the driver enables & uses
PCH_DMA, which is not enabled, so select that.

ERROR: "__dma_request_channel" [drivers/serial/pch_uart.ko] undefined!
ERROR: "dma_release_channel" [drivers/serial/pch_uart.ko] undefined!

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Reported-by: Zimny Lech <napohybelskurwysynom2010@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Randy Dunlap 2010-12-02 09:19:48 -08:00 committed by Greg Kroah-Hartman
parent 16c63f8ea4
commit 5ac387d983
1 changed files with 2 additions and 1 deletions
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3
drivers/serial/Kconfig
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@ -1650,8 +1650,9 @@ config SERIAL_IFX6X60
config SERIAL_PCH_UART
tristate "Intel EG20T PCH UART"
depends on PCI && DMADEVICES
select SERIAL_CORE
depends on PCI
select PCH_DMA
help
This driver is for PCH(Platform controller Hub) UART of Intel EG20T
which is an IOH(Input/Output Hub) for x86 embedded processor.