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772f89910a
Current code resets the uart port only when it supports the irda mode. In actually, we also need to reset the uart port in the non-irda mode. A hang was caught in the following case: UART A transmits data to the other end. But the transmission maybe terminated. In some corner case, the TX FIFO maybe not empty. The kernel will hang at the imx_set_termios(): ............................................................ while (!(readl(sport->port.membase + USR2) & USR2_TXDC)) barrier(); ............................................................ This patch resets the uart port all the time in the imx_startup(). And fix the hang. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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hvc | ||
ipwireless | ||
serial | ||
vt | ||
amiserial.c | ||
bfin_jtag_comm.c | ||
cyclades.c | ||
ehv_bytechan.c | ||
goldfish.c | ||
isicom.c | ||
Kconfig | ||
Makefile | ||
metag_da.c | ||
moxa.c | ||
moxa.h | ||
mxser.c | ||
mxser.h | ||
n_gsm.c | ||
n_hdlc.c | ||
n_r3964.c | ||
n_tracerouter.c | ||
n_tracesink.c | ||
n_tracesink.h | ||
n_tty.c | ||
nozomi.c | ||
pty.c | ||
rocket.c | ||
rocket.h | ||
rocket_int.h | ||
synclink.c | ||
synclink_gt.c | ||
synclinkmp.c | ||
sysrq.c | ||
tty_audit.c | ||
tty_buffer.c | ||
tty_io.c | ||
tty_ioctl.c | ||
tty_ldisc.c | ||
tty_ldsem.c | ||
tty_mutex.c | ||
tty_port.c |