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c934878cc0
linux/drivers/serial
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Uwe Kleine-König c934878cc0 Serial: pxa: work around Errata #75 
Intel(R) PXA27x Processor Family Specification Update (Nov 2005)
says:

  E75. UART: Baud rate may not be programmed correctly on
       back-to-back writes.

  Problem:
  When programming the Divisor Latch registers, Low and High (DLL and
  DLH), with back-to-back writes, the second register write may not
  take effect. The result is an incorrect baud rate.

  Workaround:
  After programming the first Divisor Latch register, read and verify
  it before programming the second Divisor Latch register.

This was hit when changing the baud rate from 115200 to 9600 while
receiving characters at 9600 Bd.

And fixed indention of some comments nearby.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11 15:18:04 -08:00
..
cpm_uart Fix build of cpm_uart due to core changes 2009-09-24 17:01:22 +10:00
jsm jsm: adding EEH handlers 2009-12-11 15:18:03 -08:00
8250_accent.c
8250_acorn.c
8250_boca.c
8250_early.c 8250: switch 8250 drivers to use _nocache ioremaps 2008-05-01 08:04:00 -07:00
8250_exar_st16c554.c
8250_fourport.c
8250_gsc.c serial: 8250_gsc: fix printk format error 2009-05-29 08:40:02 -07:00
8250_hp300.c 8250_hp300: coding style 2008-02-08 09:22:25 -08:00
8250_hub6.c 8250_hub6: codding style 2008-02-08 09:22:25 -08:00
8250_mca.c
8250_pci.c serial: add support for the Lava Quattro PCI quad-port 16550A card 2009-11-12 07:25:57 -08:00
8250_pnp.c tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
8250.c serial, 8250: calculate irqflags bitmask before loop 2009-12-11 15:18:04 -08:00
8250.h serial: 8250: add IRQ trigger support 2009-09-19 13:13:19 -07:00
21285.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
68328serial.c serial, 8250: remove NR_IRQ usage 2008-10-16 16:52:02 +02:00
68328serial.h
68360serial.c Fix compile errors in SGI console drivers (linux-next tree) 2008-07-20 17:12:36 -07:00
amba-pl010.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
amba-pl011.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
apbuart.c apbuart: Use of_find_node_by_path to find root node. 2009-11-13 13:25:06 -08:00
apbuart.h sparc: Support for GRLIB APBUART serial port 2009-11-04 08:44:54 -08:00
atmel_serial.c atmel_serial: fix bad BUILD_BUG_ON() usage 2009-10-29 07:39:30 -07:00
bcm63xx_uart.c bcm63xx_uart: Fix serial driver compile breakage. 2009-11-30 16:38:32 -08:00
bfin_5xx.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
bfin_sport_uart.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
bfin_sport_uart.h Blackfin serial driver: this driver enable SPORTs on Blackfin emulate UART 2008-04-30 08:29:30 -07:00
clps711x.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
crisv10.c CRIS: fix defconfig build failure 2009-08-31 18:38:16 +02:00
crisv10.h tty: Use the generic RS485 ioctl on CRIS 2009-04-07 08:44:05 -07:00
dz.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
dz.h dz: clean up and improve the setup of termios settings 2008-02-07 08:42:24 -08:00
icom.c icom: convert space to tabs 2009-10-01 16:11:15 -07:00
icom.h Coding style fix drivers/serial/icom.h 2008-02-03 14:47:38 +02:00
imx.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
ioc3_serial.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
ioc4_serial.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
ip22zilog.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
ip22zilog.h
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-12-09 19:03:16 -08:00
kgdboc.c tty: The big operations rework 2008-04-30 08:29:47 -07:00
m32r_sio_reg.h
m32r_sio.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
m32r_sio.h
Makefile sparc: Support for GRLIB APBUART serial port 2009-11-04 08:44:54 -08:00
max3100.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
mcf.c m68knommu: move mcf_remove to .devexit.text 2009-12-04 11:45:30 +10:00
mpc52xx_uart.c drivers/serial/mpc52xx_uart.c: Use UPIO_MEM rather than SERIAL_IO_MEM 2009-10-15 09:58:28 -06:00
mpsc.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
msm_serial.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
msm_serial.h msm_serial: serial driver for MSM7K onboard serial peripheral. 2009-06-22 11:32:25 -07:00
mux.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
netx-serial.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
nwpserial.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
of_serial.c tty/of_serial: add missing ns16550a id 2009-11-30 16:38:44 -08:00
pmac_zilog.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
pmac_zilog.h tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
pnx8xxx_uart.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
pxa.c Serial: pxa: work around Errata #75 2009-12-11 15:18:04 -08:00
s3c24a0.c ARM: S3C: Update Simtec copyright statements from , to - [2] 2009-12-01 01:33:51 +00:00
s3c2400.c ARM: S3C24XX: serial: Fix section mismatch warnings 2009-07-30 23:56:41 +01:00
s3c2410.c ARM: S3C: Update Simtec copyright statements from , to - [2] 2009-12-01 01:33:51 +00:00
s3c2412.c ARM: S3C: Update Simtec copyright statements from , to - [2] 2009-12-01 01:33:51 +00:00
s3c2440.c ARM: S3C: Update Simtec copyright statements from , to - [2] 2009-12-01 01:33:51 +00:00
s3c6400.c ARM: S3C64XX: serial: Fix section mismatch warning 2009-07-30 23:56:41 +01:00
sa1100.c ARM: Fix SA1100 Neponset serial section mismatch 2009-09-28 18:06:16 +01:00
samsung.c ARM: S3C: Update Simtec copyright statements from , to - [2] 2009-12-01 01:33:51 +00:00
samsung.h ARM: S3C: Update Simtec copyright statements from , to - [2] 2009-12-01 01:33:51 +00:00
sb1250-duart.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
sc26xx.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
serial_core.c serial: cascade needless conditionals 2009-12-11 15:18:04 -08:00
serial_cs.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2009-12-05 09:42:59 -08:00
serial_ks8695.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
serial_lh7a40x.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
serial_txx9.c serial_txx9: use container_of() instead of direct cast 2009-10-01 16:11:15 -07:00
sh-sci.c serial: sh-sci: Fix too early port disabling. 2009-12-04 13:42:23 +09:00
sh-sci.h serial: sh-sci: Depend on HAVE_CLK unconditionally. 2009-11-25 16:23:35 +09:00
sn_console.c serial: kill off uart_info 2009-09-19 13:13:28 -07:00
suncore.c serial: suncore: Fix RSC/LOM handling in sunserial_console_termios(). 2009-11-24 14:09:56 -08:00
suncore.h serial: suncore: Fix RSC/LOM handling in sunserial_console_termios(). 2009-11-24 14:09:56 -08:00
sunhv.c serial: suncore: Fix RSC/LOM handling in sunserial_console_termios(). 2009-11-24 14:09:56 -08:00
sunsab.c serial: suncore: Fix RSC/LOM handling in sunserial_console_termios(). 2009-11-24 14:09:56 -08:00
sunsab.h
sunsu.c sunsu: Use sunserial_console_termios() in sunsu_console_setup(). 2009-11-24 14:12:50 -08:00
sunzilog.c serial: suncore: Fix RSC/LOM handling in sunserial_console_termios(). 2009-11-24 14:09:56 -08:00
sunzilog.h
timbuart.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
timbuart.h serial: Added Timberdale UART driver 2009-06-11 08:51:06 -07:00
uartlite.c uartlite: support shared interrupt lines 2009-09-19 13:13:38 -07:00
ucc_uart.c tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
vr41xx_siu.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
zs.c serial: move delta_msr_wait into the tty_port 2009-09-19 13:13:31 -07:00
zs.h