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abb4a23907
linux-next/drivers/serial
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David Gibson abb4a23907 serial: define FIXED_PORT flag for serial_core 
At present, the serial core always allows setserial in userspace to change the
port address, irq and base clock of any serial port.  That makes sense for
legacy ISA ports, but not for (say) embedded ns16550 compatible serial ports
at peculiar addresses.  In these cases, the kernel code configuring the ports
must know exactly where they are, and their clocking arrangements (which can
be unusual on embedded boards).  It doesn't make sense for userspace to change
these settings.

Therefore, this patch defines a UPF_FIXED_PORT flag for the uart_port
structure.  If this flag is set when the serial port is configured, any
attempts to alter the port's type, io address, irq or base clock with
setserial are ignored.

In addition this patch uses the new flag for on-chip serial ports probed in
arch/powerpc/kernel/legacy_serial.c, and for other hard-wired serial ports
probed by drivers/serial/of_serial.c.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:50 -07:00
..
cpm_uart [POWERPC] Fix compile failure in cpm_uart_cpm2 2007-02-16 14:00:19 +11:00
jsm [PATCH] serial: replace kmalloc+memset with kzalloc 2007-02-14 08:09:52 -08:00
8250_accent.c [SERIAL] Use an enum for serial8250 platform device IDs 2005-09-08 16:04:41 +01:00
8250_acorn.c [PATCH] serial: replace kmalloc+memset with kzalloc 2007-02-14 08:09:52 -08:00
8250_au1x00.c [SERIAL] AMD Alchemy UART: claim memory range 2006-04-30 11:15:58 +01:00
8250_boca.c [SERIAL] Use an enum for serial8250 platform device IDs 2005-09-08 16:04:41 +01:00
8250_early.c [SERIAL] kernel console should send CRLF not LFCR 2006-03-20 20:00:09 +00:00
8250_exar_st16c554.c [PATCH] Exar quad port serial 2006-12-07 08:39:35 -08:00
8250_fourport.c [SERIAL] Use an enum for serial8250 platform device IDs 2005-09-08 16:04:41 +01:00
8250_gsc.c [PARISC] Clean up asm-parisc/serial.h 2006-10-04 06:47:03 -06:00
8250_hp300.c [PATCH] hp300: fix driver_register() return handling, remove dio_module_init() 2006-03-25 08:22:53 -08:00
8250_hub6.c [SERIAL] Use an enum for serial8250 platform device IDs 2005-09-08 16:04:41 +01:00
8250_mca.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
8250_pci.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
8250_pnp.c [PATCH] add Fujitsu Siemens Tablet PC devices to 8250_pnp.c 2007-03-23 11:01:22 -07:00
8250.c RM9000 serial driver 2007-05-07 12:12:50 -07:00
8250.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
21285.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
68328serial.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
68328serial.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
68360serial.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
amba-pl010.c [ARM] Convert AMBA PL010 driver to use the clk infrastructure 2007-04-22 12:30:41 +01:00
amba-pl011.c [ARM] Fix AMBA serial drivers for non-first serial ports 2007-01-24 11:59:57 +00:00
atmel_serial.c [ARM] 4357/1: AT91: Support slower serial baud-rates 2007-05-03 14:12:45 +01:00
atmel_serial.h [ARM] 4357/1: AT91: Support slower serial baud-rates 2007-05-03 14:12:45 +01:00
clps711x.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
crisv10.c [PATCH] Char: tty_wakeup cleanup 2007-02-11 10:51:26 -08:00
crisv10.h [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
dz.c [PATCH] dz: remove struct pt_regs references 2007-03-05 07:57:51 -08:00
dz.h [PATCH] dz: Fixes to make it work 2006-12-07 08:39:41 -08:00
icom.c Char: icom, mark __init as __devinit 2007-04-24 08:23:09 -07:00
icom.h do not truncate irq number for icom adapter 2007-04-24 08:23:08 -07:00
imx.c [ARM] 4328/1: Move i.MX UART regs to driver 2007-05-03 20:24:21 +01:00
ioc3_serial.c [PATCH] serial: replace kmalloc+memset with kzalloc 2007-02-14 08:09:52 -08:00
ioc4_serial.c [PATCH] serial: replace kmalloc+memset with kzalloc 2007-02-14 08:09:52 -08:00
ip22zilog.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ip22zilog.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig RM9000 serial driver 2007-05-07 12:12:50 -07:00
m32r_sio_reg.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
m32r_sio.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
m32r_sio.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
Makefile [PATCH] PNX8550 UART driver 2007-02-14 08:09:52 -08:00
mcfserial.c [PATCH] m68knommu: fix work queues in mcfserial.c driver 2007-03-06 18:08:38 -08:00
mcfserial.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
mpc52xx_uart.c Revert "[POWERPC] Rename get_property to of_get_property: drivers" 2007-04-26 22:24:31 +10:00
mpsc.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
mux.c Merge branch 'parisc' from /home/kyle/repos/parisc-2.6.git 2007-02-17 00:18:23 -05:00
netx-serial.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
of_serial.c serial: define FIXED_PORT flag for serial_core 2007-05-07 12:12:50 -07:00
pmac_zilog.c Revert "[POWERPC] Rename get_property to of_get_property: drivers" 2007-04-26 22:24:31 +10:00
pmac_zilog.h [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
pnx8xxx_uart.c [PATCH] PNX8550 UART driver 2007-02-14 08:09:52 -08:00
pxa.c [ARM] 4304/1: removes the unnecessary bit number from CKENnn_XXXX 2007-04-21 23:14:01 +01:00
s3c2410.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
sa1100.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
serial_core.c serial: define FIXED_PORT flag for serial_core 2007-05-07 12:12:50 -07:00
serial_cs.c serial: Add PCMCIA IDs for Quatech DSP-100 dual RS232 adapter. 2007-02-16 15:19:16 -08:00
serial_lh7a40x.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
serial_txx9.c [SERIAL] serial_txx9 driver update 2007-02-22 00:50:45 +00:00
sh-sci.c serial: Fix sh-sci break interrupt/sysrq handling. 2007-03-14 13:22:37 +09:00
sh-sci.h sh: SH-MobileR SH7722 CPU support. 2006-12-12 08:42:09 +09:00
sn_console.c [PATCH] 2.6 Altix: console fix for CONFIG_DEBUG_SHIRQ usage 2007-03-08 07:39:15 -08:00
suncore.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
suncore.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sunhv.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
sunsab.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
sunsab.h [SUNSAB]: Defer register updates until transmitter is idle. 2005-05-11 11:34:32 -07:00
sunsu.c [SPARC/64] constify of_get_property return: drivers 2007-04-26 01:54:27 -07:00
sunzilog.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
sunzilog.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
uartlite.c [PATCH] drivers/serial NULL noise removal 2007-02-09 09:14:06 -08:00
v850e_uart.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00
vr41xx_siu.c [PATCH] tty: switch to ktermios 2006-12-08 08:28:57 -08:00