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kernel-fxtec-pro1x/drivers/serial
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Haavard Skinnemoen 0ccad87012 atmel_serial: fix hang in set_termios when crtscts is enabled 
After enabling hardware flow control, any subsequent termios call may hang
waiting for the transmitter to drain.  This appears to be caused by a
busy-loop in set_termios() waiting for the transmitter to become empty,
which may take a very long time (or hang indefinitely) if the device at
the other end is blocking us.

A quick look through the tty and serial_core code indicates that any
necessary flushing (which is optional) has already been done at this
point, so there's no need for the driver to flush the transmitter on its
own.

Fix it by removing the busy-loop altogether.

Tested-by: Eirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 12:01:16 -07:00
..
cpm_uart cpm_uart: Disable CPM udbg when re-initing CPM uart, even if not the console. 2009-04-06 09:09:33 -05:00
jsm jsm: correctly support multiple 4/8-port boards 2009-06-11 08:51:02 -07:00
8250.c serial: add support for the TI AR7 internal UART 2009-06-11 08:51:03 -07:00
8250.h
8250_accent.c
8250_acorn.c
8250_boca.c
8250_early.c
8250_exar_st16c554.c
8250_fourport.c
8250_gsc.c serial: 8250_gsc: fix printk format error 2009-05-29 08:40:02 -07:00
8250_hp300.c
8250_hub6.c
8250_mca.c
8250_pci.c 8250_pci: add the OXCB950 chip to the 8250 PCI driver. 2009-06-11 08:50:58 -07:00
8250_pnp.c serial: Update PNP IDs 2009-04-06 14:36:26 -07:00
21285.c [ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.h 2009-03-25 10:21:35 +00:00
68328serial.c
68328serial.h
68360serial.c
amba-pl010.c [ARM] 5544/1: Trust PrimeCell resource sizes 2009-06-11 15:36:56 +01:00
amba-pl011.c [ARM] 5544/1: Trust PrimeCell resource sizes 2009-06-11 15:36:56 +01:00
atmel_serial.c atmel_serial: fix hang in set_termios when crtscts is enabled 2009-06-16 12:01:16 -07:00
bfin_5xx.c Blackfin Serial Driver: disable dma rx interrupt only rather than all irqs 2009-06-11 08:51:05 -07:00
bfin_sport_uart.c Blackfin SPORT UART: rewrite inline assembly 2009-06-11 08:51:04 -07:00
bfin_sport_uart.h
clps711x.c [ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.h 2009-03-25 10:21:35 +00:00
crisv10.c CRISv10: fix serial driver proc-usage 2009-05-02 15:36:09 -07:00
crisv10.h tty: Use the generic RS485 ioctl on CRIS 2009-04-07 08:44:05 -07:00
dz.c
dz.h
icom.c icom: fix compile errors when defining ICOM_TRACE 2009-06-11 08:51:03 -07:00
icom.h
imx.c Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-06-14 13:42:43 -07:00
ioc3_serial.c
ioc4_serial.c
ip22zilog.c
ip22zilog.h
Kconfig trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
kgdboc.c
m32r_sio.c
m32r_sio.h
m32r_sio_reg.h
Makefile serial: Added Timberdale UART driver 2009-06-11 08:51:06 -07:00
max3100.c tty: MAX3100 2009-04-08 14:33:38 -07:00
mcf.c m68knommu: Fix support for console port other than ttyS0 on mcf.c 2009-03-24 15:17:43 +10:00
mpc52xx_uart.c drivers/serial/mpc52xx_uart.c: fix array overindexing check 2009-05-29 08:40:02 -07:00
mpsc.c
mux.c
netx-serial.c
nwpserial.c serial/nwpserial: Fix wrong register read address and add interrupt acknowledge. 2009-05-15 16:43:42 +10:00
of_serial.c serial: Add 16850 uart type support to OF uart driver 2009-01-16 16:15:17 +11:00
pmac_zilog.c powerpc/pmac: Fix internal modem IRQ on Wallstreet PowerBook 2009-04-07 15:07:43 +10:00
pmac_zilog.h
pnx8xxx_uart.c When a break signal is detected, the next character should be ignored. 2009-01-15 12:48:36 -08:00
pxa.c [ARM] pxa: remove machine class specific stuffs from serial driver 2009-03-09 21:22:38 +08:00
s3c24a0.c [ARM] S3C24A0: Serial port definitions and driver support. 2008-12-15 21:46:36 +00:00
s3c2400.c
s3c2410.c
s3c2412.c
s3c2440.c
s3c6400.c [ARM] S3C: Add UDIVSLOT support for newer UARTS 2009-05-01 12:28:16 +01:00
sa1100.c [ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.h 2009-03-25 10:21:35 +00:00
samsung.c [ARM] S3C: Add UDIVSLOT support for newer UARTS 2009-05-01 12:28:16 +01:00
samsung.h [ARM] S3C: Add UDIVSLOT support for newer UARTS 2009-05-01 12:28:16 +01:00
sb1250-duart.c
sc26xx.c
serial_core.c serial: fixup /proc/tty/driver/serial after proc_fops conversion 2009-04-01 14:50:48 -07:00
serial_cs.c 3c589_cs: add cis(firmware) of 3Com multifunction pcmcia card 2009-05-01 19:21:26 -07:00
serial_ks8695.c
serial_lh7a40x.c
serial_txx9.c
sh-sci.c serial: sh-sci: Fix up PORT_SCI console output ordering. 2009-06-02 12:11:18 +09:00
sh-sci.h sh: Fix up the sh64 earlyprintk build. 2009-05-09 14:31:37 +09:00
sn_console.c
suncore.c
suncore.h
sunhv.c
sunsab.c
sunsab.h
sunsu.c serial: sunsu: sunsu_kbd_ms_init needs to be __devinit 2009-04-08 03:29:03 -07:00
sunzilog.c serial: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
sunzilog.h
timbuart.c timbuart: Fix the termios logic 2009-06-11 08:51:06 -07:00
timbuart.h serial: Added Timberdale UART driver 2009-06-11 08:51:06 -07:00
uartlite.c
ucc_uart.c ucc: Fix leaky error path 2009-04-06 14:36:32 -07:00
vr41xx_siu.c
zs.c
zs.h