Stephen Boyd
c2a3e84f95
tty: hvc_dcc: Fix duplicate character inputs ...
Reading from the DCC grabs a character from the buffer and
clears the status bit. Since this is a context-changing
operation, instructions following the character read that rely on
the status bit being accurate need to be synchronized with an
ISB.
In this case, the status bit check needs to execute after the
character read otherwise we run the risk of reading the character
and checking the status bit before the read can clear the status
bit in the first place. When this happens, the user will see the
same character they typed twice, instead of once.
Add an ISB after the read and the write, so that the status check
is synchronized with the read/write operations.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-15 12:02:13 -08:00
tty: hvc_dcc: Fix duplicate character inputs
2011-11-15 12:02:13 -08:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
2011-05-24 13:28:35 -07:00
Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
2011-11-06 19:44:47 -08:00
tty: Add export.h for EXPORT_SYMBOL/THIS_MODULE to exporters
2011-10-31 19:31:28 -04:00
TTY: irq: Remove IRQF_DISABLED
2011-09-22 16:08:57 -07:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
TTY: irq: Remove IRQF_DISABLED
2011-09-22 16:08:57 -07:00
drivers/tty: don't use the byte channel handle as a parameter in ehv_bytechan.c
2011-09-26 16:38:43 -07:00
TTY: irq: Remove IRQF_DISABLED
2011-09-22 16:08:57 -07:00
Merge branch 'for-linus' of git://github.com/richardweinberger/linux
2011-11-02 09:45:39 -07:00
tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver
2011-08-23 10:32:56 -07:00
drivers/tty: use printk_ratelimited() instead of printk_ratelimit()
2011-07-01 15:35:45 -07:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/
2011-02-22 16:14:56 -08:00
TTY: mxser+cyclades remove wait_until_sent debug code
2011-08-23 10:34:07 -07:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
tty/n_gsm: avoid fifo overflow in gsm_dlci_data_output
2011-09-26 16:39:23 -07:00
Revert "tty: make receive_buf() return the amout of bytes received"
2011-06-04 06:33:24 +09:00
Revert "tty: make receive_buf() return the amout of bytes received"
2011-06-04 06:33:24 +09:00
n_tracerouter and n_tracesink ldisc additions.
2011-05-13 16:31:00 -07:00
n_tracerouter and n_tracesink ldisc additions.
2011-05-13 16:31:00 -07:00
n_tracerouter and n_tracesink ldisc additions.
2011-05-13 16:31:00 -07:00
Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
2011-07-25 23:09:27 -07:00
Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
2011-05-26 13:19:00 -07:00
Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2011-10-26 15:11:09 +02:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/
2011-02-22 16:14:56 -08:00
tty: move a number of tty drivers from drivers/char/ to drivers/tty/
2011-02-22 16:14:56 -08:00
drivers/tty/synclink: remove double comment
2011-08-23 10:32:56 -07:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
TTY: snyclinkmp: forever loop in tx_load_dma_buffer()
2011-09-29 13:23:33 -07:00
lib, arch: add filter argument to show_mem and fix private implementations
2011-03-24 17:49:37 -07:00
tty_audit: fix tty_audit_add_data live lock on audit disabled
2011-03-07 12:04:50 -08:00
tty_buffer: get rid of 'seen_tail' logic in flush_to_ldisc
2011-06-08 07:46:30 -07:00
Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2011-10-26 15:11:09 +02:00
tty: Support compat_ioctl get/set termios_locked
2011-10-18 14:17:11 -07:00
TTY: remove tty_locked
2011-08-23 10:34:07 -07:00
TTY: remove tty_locked
2011-08-23 10:34:07 -07:00
TTY: use tty_wait_until_sent_from_close in tty_port_close_start
2011-08-25 09:00:41 -07:00
c2a3e84f95