Huang Shijie 1ce43e58d4 serial: imx: check the DMA for imx_tx_empty ... Assume the following situation: If the DMA is enabled, and the a TX DMA operation is working, But we have not issued the TX DMA operation (or we have issued the TX DMA operation with dma_async_issue_pending(), but the DMA has not started to move the data from the memory to the TXFIFO). At this time, we may get the wrong status of the transmitter when we call the imx_tx_empty. In such situation, only check the USR2_TXDC does not enough for us. This patch checks the DMA's situation, and return 0 when the TX DMA is working. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-10-16 13:19:54 -07:00
..
hvc	Merge 3.12-rc4 into tty-next	2013-10-06 17:28:16 -07:00
ipwireless	tty: ipwireless: Remove redundant NULL check before kfree	2013-03-15 13:58:32 -07:00
serial	serial: imx: check the DMA for imx_tx_empty	2013-10-16 13:19:54 -07:00
vt	vt: properly ignore xterm-256 colour codes	2013-09-26 15:58:27 -07:00
amiserial.c	TTY: amiserial, remove unnecessary platform_set_drvdata()	2013-08-27 16:24:33 -07:00
bfin_jtag_comm.c	TTY: bfin_jtag_comm: fix incorrect placement of __initdata tag	2013-09-30 19:09:37 -07:00
cyclades.c	TTY: add tty_port_tty_hangup helper	2013-03-18 16:24:29 -07:00
ehv_bytechan.c	TTY: ehv_bytechan: add missing platform_driver_unregister() when module exit	2013-05-20 12:15:59 -07:00
goldfish.c	goldfish: move to tty_port for flip buffers	2013-01-25 08:09:38 -08:00
isicom.c	TTY: switch tty_flip_buffer_push	2013-01-15 22:30:15 -08:00
Kconfig	tty: metag_da: Add metag DA TTY driver	2013-02-06 11:10:17 -08:00
Makefile	tty: Add timed, writer-prioritized rw semaphore	2013-05-20 12:30:32 -07:00
metag_da.c	tty: metag_da: avoid getting tty kref in dashtty_timer()	2013-02-06 11:10:17 -08:00
moxa.c	TTY: add tty_port_tty_hangup helper	2013-03-18 16:24:29 -07:00
moxa.h
mxser.c	tty: mxser: Fix build warning introduced by dfc7b837c7 (Re: linux-next: build warning after merge of the tty.current tree)	2013-05-22 10:26:02 -07:00
mxser.h
n_gsm.c	Drivers: tty: n_gsm.c: fixed 7 errors & 6 warnings that checkpatch complained	2013-07-24 15:21:13 -07:00
n_hdlc.c
n_r3964.c	tty: localise the lock	2012-08-10 12:55:47 -07:00
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c	tty: incorrect test of echo_buf() result for ECHO_OP_START	2013-10-16 13:12:13 -07:00
nozomi.c	tty: Remove unnecessary semicolons	2013-10-16 13:08:16 -07:00
pty.c	tty: Fix lock order in tty_do_resize()	2013-07-24 15:12:53 -07:00
rocket_int.h
rocket.c	TTY: rocket, fix more no-PCI warnings	2013-05-20 12:15:59 -07:00
rocket.h
synclink_gt.c	TTY: synclink_gt: fix DTR being raised on hang up	2013-04-12 14:08:17 -07:00
synclink.c	TTY: synclink: replace bitmasks add operation with OR operation.	2013-07-29 12:47:37 -07:00
synclinkmp.c	TTY: snyclinkmp: calculating wrong addresses	2013-07-24 15:23:38 -07:00
sysrq.c	sysrq: Allow magic SysRq key functions to be disabled through Kconfig	2013-10-16 13:01:44 -07:00
tty_audit.c	audit: do not needlessly take a lock in tty_audit_exit	2013-04-30 15:31:28 -04:00
tty_buffer.c	tty: Remove private constant from global namespace	2013-07-23 16:47:10 -07:00
tty_io.c	tty: disassociate_ctty() sends the extra SIGCONT	2013-09-17 21:53:32 -04:00
tty_ioctl.c	tty: Fix SIGTTOU not sent with tcflush()	2013-09-25 17:52:17 -07:00
tty_ldisc.c	tty: Convert termios_mutex to termios_rwsem	2013-07-23 16:43:01 -07:00
tty_ldsem.c	tty: Add timed, writer-prioritized rw semaphore	2013-05-20 12:30:32 -07:00
tty_mutex.c	tty: tty_mutex.c: Fixed coding style warning (using printk)	2012-10-24 11:34:51 -07:00
tty_port.c	tty: Remove unused drop() method from tty_port interface	2013-09-25 18:08:34 -07:00