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4e4e66029a
android_kernel_xiaomi_sm8350/drivers/serial
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Volker Ernst 4e4e66029a serial/imx: check that the buffer is non-empty before sending it out 
The .start_tx callback (imx_start_tx here) isn't only called when the
buffer is non-empty.  E.g. after resume or when handshaking is enabled
and the other side starts to signal being ready.

So check for an empty puffer already before sending the first character.
This prevents sending out stale (or uninitialised) data.

Signed-off-by: Volker Ernst <volker.ernst@txtr.com>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Andy Green <andy@warmcat.com>
[ukl: reword commit log, put check in while condition]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22 10:20:10 -07:00
..
cpm_uart of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
jsm jsm: Remove the uart port on errors 2010-10-22 10:20:10 -07:00
8250_accent.c
8250_acorn.c
8250_boca.c
8250_early.c serial: print early console device address in hex 2010-08-23 18:17:20 -07:00
8250_exar_st16c554.c
8250_fourport.c
8250_gsc.c
8250_hp300.c
8250_hub6.c
8250_mca.c
8250_pci.c serial: add support for OX16PCI958 card 2010-08-10 13:47:45 -07:00
8250_pnp.c
8250.c 8250: allow platforms to override PM hook. 2010-10-22 10:20:09 -07:00
8250.h
21285.c tty: serial - fix tty back references in termios 2010-08-10 13:47:41 -07:00
68328serial.c 68328serial: check return value of copy_*_user() instead of access_ok() 2010-08-23 18:17:22 -07:00
68328serial.h
68360serial.c tty: icount changeover for other main devices 2010-10-22 10:20:05 -07:00
altera_jtaguart.c serial: Add driver for the Altera JTAG UART 2010-05-21 09:34:30 -07:00
altera_uart.c altera_uart: Don't use plain integer as NULL pointer 2010-10-22 10:20:09 -07:00
amba-pl010.c serial: amba-pl010: fix set_ldisc 2010-09-20 16:30:00 -07:00
amba-pl011.c ARM: Fix section build warnings for AMBA drivers 2010-07-27 10:48:43 +01:00
apbuart.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
apbuart.h
atmel_serial.c serial: general fixes in the serial_rs485 structure 2010-08-10 13:47:45 -07:00
bcm63xx_uart.c
bfin_5xx.c tty: serial - fix tty referencing in set_ldisc 2010-08-10 13:47:41 -07:00
bfin_sport_uart.c serial: bfin_sport_uart: restore transmit frame sync fix 2010-09-03 17:29:04 -07:00
bfin_sport_uart.h serial: bfin_sport_uart: add support for CTS/RTS via GPIOs 2010-05-21 09:34:27 -07:00
clps711x.c
crisv10.c serial: crisv10: formatting of pointers in printk() 2010-08-10 13:47:44 -07:00
crisv10.h
dz.c
dz.h
icom.c
icom.h
imx.c serial/imx: check that the buffer is non-empty before sending it out 2010-10-22 10:20:10 -07:00
ioc3_serial.c SERIAL: ioc3_serial: Return -ENOMEM on memory allocation failure 2010-10-19 18:32:40 +01:00
ioc4_serial.c tty: serial - fix tty back references in termios 2010-08-10 13:47:41 -07:00
ip22zilog.c
ip22zilog.h
Kconfig serial: mrst_max3110: Make the IRQ option runtime 2010-10-22 10:20:03 -07:00
kgdboc.c kgdboc: Add call backs to allow kernel mode switching 2010-08-05 09:22:30 -05:00
m32r_sio_reg.h
m32r_sio.c
m32r_sio.h
Makefile hsu: driver for Medfield High Speed UART device 2010-08-10 13:47:46 -07:00
max3100.c tty: serial - fix tty back references in termios 2010-08-10 13:47:41 -07:00
max3107-aava.c serial: max3107: Abstract out the platform specific bits 2010-08-10 13:47:44 -07:00
max3107.c serial: max3107: Fix memory leaks when returning on error 2010-10-22 10:20:03 -07:00
max3107.h serial: max3107: Fix gpiolib support 2010-08-10 13:47:46 -07:00
mcf.c serial: mcf: don't take spinlocks in already protected functions 2010-08-10 13:47:45 -07:00
mfd.c serial: mfd: add more baud rates support 2010-10-22 10:20:10 -07:00
mpc52xx_uart.c powerpc/5200: mpc52xx_uart.c: Add of_node_put to avoid memory leak 2010-09-08 13:54:48 -06:00
mpsc.c
mrst_max3110.c serial: mrst_max3110: Make the IRQ option runtime 2010-10-22 10:20:03 -07:00
mrst_max3110.h serial: mrst_max3110: some code cleanup 2010-10-22 10:20:03 -07:00
msm_serial.c msm_serial: fix serial on trout 2010-06-04 13:37:16 -07:00
msm_serial.h msm_serial: fix serial on trout 2010-06-04 13:37:16 -07:00
mux.c
netx-serial.c
nwpserial.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
of_serial.c of: Fix missing includes 2010-08-16 23:44:49 -06:00
pmac_zilog.c powerpc/macio: Fix probing of macio devices by using the right of match table 2010-06-02 17:50:38 +10:00
pmac_zilog.h
pnx8xxx_uart.c
pxa.c
s3c24a0.c
s3c2400.c
s3c2410.c
s3c2412.c
s3c2440.c
s3c6400.c
s5pv210.c ARM: S5PV310: Add serial port support 2010-08-05 18:32:42 +09:00
sa1100.c
samsung.c ARM: SAMSUNG: serial: Add FRACVAL support for newer UART 2010-08-05 18:32:41 +09:00
samsung.h
sb1250-duart.c
sc26xx.c
serial_core.c tty: Make tiocgicount a handler 2010-10-22 10:20:04 -07:00
serial_cs.c pcmcia serial_cs.c: fix multifunction card handling 2010-09-15 17:56:32 +02:00
serial_ks8695.c
serial_lh7a40x.c
serial_txx9.c
sh-sci.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-31 13:14:26 +09:00
sh-sci.h serial: sh-sci: fix handling of SCIFB sh-mobile ports 2010-05-24 08:53:37 +09:00
sn_console.c Input: sysrq - drop tty argument form handle_sysrq() 2010-08-21 00:34:45 -07:00
suncore.c sparc: Really fix "console=" for serial consoles. 2010-08-16 12:26:09 -07:00
suncore.h
sunhv.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
sunsab.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
sunsab.h
sunsu.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
sunzilog.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
sunzilog.h
timbuart.c timbuart: use __devinit and __devexit macros for probe and remove 2010-08-10 13:47:45 -07:00
timbuart.h
uartlite.c serial: Add CONSOLE_POLL support for uartlite 2010-10-22 10:19:58 -07:00
ucc_uart.c of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
vr41xx_siu.c
zs.c
zs.h