original_kernel/drivers/serial
Ian Jackson 68cb4f8e24 Serial: Do not read IIR in serial8250_start_tx when UART_BUG_TXEN
Do not read IIR in serial8250_start_tx when UART_BUG_TXEN

Reading the IIR clears some oustanding interrupts so it is not safe.
Instead, simply transmit immediately if the buffer is empty without
regard to IIR.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11 15:18:05 -08:00
..
cpm_uart
jsm jsm: adding EEH handlers 2009-12-11 15:18:03 -08:00
8250.c Serial: Do not read IIR in serial8250_start_tx when UART_BUG_TXEN 2009-12-11 15:18:05 -08:00
8250.h
8250_accent.c
8250_acorn.c
8250_boca.c
8250_early.c
8250_exar_st16c554.c
8250_fourport.c
8250_gsc.c
8250_hp300.c
8250_hub6.c
8250_mca.c
8250_pci.c
8250_pnp.c
21285.c
68328serial.c
68328serial.h
68360serial.c
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-12-09 19:03:16 -08:00
Makefile
amba-pl010.c
amba-pl011.c
apbuart.c
apbuart.h
atmel_serial.c
bcm63xx_uart.c
bfin_5xx.c
bfin_sport_uart.c
bfin_sport_uart.h
clps711x.c
crisv10.c
crisv10.h
dz.c
dz.h
icom.c
icom.h
imx.c
ioc3_serial.c
ioc4_serial.c
ip22zilog.c
ip22zilog.h
kgdboc.c
m32r_sio.c
m32r_sio.h
m32r_sio_reg.h
max3100.c
mcf.c
mpc52xx_uart.c
mpsc.c
msm_serial.c
msm_serial.h
mux.c
netx-serial.c
nwpserial.c
of_serial.c
pmac_zilog.c
pmac_zilog.h
pnx8xxx_uart.c
pxa.c Serial: pxa: work around Errata #75 2009-12-11 15:18:04 -08:00
s3c24a0.c
s3c2400.c
s3c2410.c
s3c2412.c
s3c2440.c
s3c6400.c
sa1100.c
samsung.c
samsung.h
sb1250-duart.c
sc26xx.c
serial_core.c serial: cascade needless conditionals 2009-12-11 15:18:04 -08:00
serial_cs.c
serial_ks8695.c
serial_lh7a40x.c
serial_txx9.c
sh-sci.c
sh-sci.h
sn_console.c
suncore.c
suncore.h
sunhv.c
sunsab.c
sunsab.h
sunsu.c
sunzilog.c
sunzilog.h
timbuart.c
timbuart.h
uartlite.c
ucc_uart.c
vr41xx_siu.c
zs.c
zs.h