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Stefan Agner 8e4934c6d6 tty: serial: fsl_lpuart: clear receive flag on FIFO flush ... When the receiver was enabled during startup, a character could have been in the FIFO when the UART get initially used. The driver configures the (receive) watermark level, and flushes the FIFO. However, the receive flag (RDRF) could still be set at that stage (as mentioned in the register description of UARTx_RWFIFO). This leads to an interrupt which won't be handled properly in interrupt mode: The receive interrupt function lpuart_rxint checks the FIFO count, which is 0 at that point (due to the flush during initialization). The problem does not manifest when using DMA to receive characters. Fix this situation by explicitly read the status register, which leads to clearing of the RDRF flag. Due to the flush just after the status flag read, a explicit data read is not to required. Signed-off-by: Stefan Agner <stefan@agner.ch> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		10 years ago
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hvc	s390/hvc_iucv: add simple wildcard matches to the iucv allow filter	10 years ago
ipwireless	tty: ipwireless: Fix probable mask then right shift defects	10 years ago
serial	tty: serial: fsl_lpuart: clear receive flag on FIFO flush	10 years ago
vt	vt: provide notifications on selection changes	10 years ago
Kconfig	…
Makefile	…
amiserial.c	TTY: fix misspelling of current function in string	10 years ago
bfin_jtag_comm.c	TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation	10 years ago
cyclades.c	tty: Remove tty_hung_up_p() tests from tty drivers' open()	11 years ago
ehv_bytechan.c	tty: remove unused variable sprop	10 years ago
goldfish.c	goldfish: off by one in goldfish_tty_console_setup()	10 years ago
isicom.c	tty/isicom: fix big-endian compile warning	10 years ago
metag_da.c	tty/metag_da: Add console_poll module parameter	11 years ago
moxa.c	TTY: fix decimal printf format specifiers prefixed with 0x	11 years ago
moxa.h	…
mxser.c	…
mxser.h	…
n_gsm.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	11 years ago
n_hdlc.c	drivers/tty/n_hdlc.c: replace kmalloc/memset by kzalloc	11 years ago
n_r3964.c	…
n_tracerouter.c	…
n_tracesink.c	…
n_tracesink.h	…
n_tty.c	n_tty: Fix signal handling flushes	10 years ago
nozomi.c	drivers/tty/nozomi.c: Use 'nozomi_setup_memory' instead of 'setup_memory'	11 years ago
pty.c	n_tty: Fix signal handling flushes	10 years ago
rocket.c	TTY: fix misspelling of current function in string	10 years ago
rocket.h	…
rocket_int.h	…
synclink.c	tty: Remove tty_hung_up_p() tests from tty drivers' open()	11 years ago
synclink_gt.c	synclink_gt: use pci_zalloc_consistent	11 years ago
synclinkmp.c	tty: Remove tty_hung_up_p() tests from tty drivers' open()	11 years ago
sysrq.c	oom, PM: make OOM detection in the freezer path raceless	10 years ago
tty_audit.c	audit: anchor all pid references in the initial pid namespace	11 years ago
tty_buffer.c	pty: Fix buffer flush deadlock	10 years ago
tty_io.c	tty: fix up atime/mtime mess, take four	10 years ago
tty_ioctl.c	TTY: fix tty_wait_until_sent maximum timeout	10 years ago
tty_ldisc.c	tty: Allow safe access to termios for set_ldisc() handlers	10 years ago
tty_ldsem.c	lockdep: Make held_lock->check and "int check" argument bool	11 years ago
tty_mutex.c	tty: Make lock subclasses available for other tty locks	10 years ago
tty_port.c	tty: Deletion of unnecessary checks before two function calls	10 years ago