pcmcia: use DMA_MASK_NONE for the default for all pcmcia devices

[linux-2.6] / drivers / serial / Kconfig

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 81b52b7cca21deb314f2b2a15864172ac6cf7eb0..d6ae38e55d01f72045fd7e8c239420937fa62298 100644 (file)
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -986,6 +986,31 @@ config SERIAL_PMACZILOG
          PowerMac machines.
          Say Y or M if you want to be able to these serial ports.
 
+config SERIAL_PMACZILOG_TTYS
+       bool "Use ttySn device nodes for Zilog z85c30"
+       depends on SERIAL_PMACZILOG
+       help
+         The pmac_zilog driver for the z85C30 chip on many powermacs
+         historically used the device numbers for /dev/ttySn.  The
+         8250 serial port driver also uses these numbers, which means
+         the two drivers being unable to coexist; you could not use
+         both z85C30 and 8250 type ports at the same time.
+
+         If this option is not selected, the pmac_zilog driver will
+         use the device numbers allocated for /dev/ttyPZn.  This allows
+         the pmac_zilog and 8250 drivers to co-exist, but may cause
+         existing userspace setups to break.  Programs that need to
+         access the built-in serial ports on powermacs will need to
+         be reconfigured to use /dev/ttyPZn instead of /dev/ttySn.
+
+         If you enable this option, any z85c30 ports in the system will
+         be registered as ttyS0 onwards as in the past, and you will be
+         unable to use the 8250 module for PCMCIA or other 16C550-style
+         UARTs.
+
+         Say N unless you need the z85c30 ports on your powermac
+         to appear as /dev/ttySn.
+
 config SERIAL_PMACZILOG_CONSOLE
        bool "Console on PowerMac z85c30 serial port"
        depends on SERIAL_PMACZILOG=y