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linux/drivers/tty
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Takatoshi Akiyama e9ef18fabd serial: sh-sci: Fix panic when serial console and DMA are enabled 
commit 3c9101766b upstream.

This patch fixes an issue that kernel panic happens when DMA is enabled
and we press enter key while the kernel booting on the serial console.

* An interrupt may occur after sci_request_irq().
* DMA transfer area is initialized by setup_timer() in sci_request_dma()
  and used in interrupt.

If an interrupt occurred between sci_request_irq() and setup_timer() in
sci_request_dma(), DMA transfer area has not been initialized yet.
So, this patch changes the order of sci_request_irq() and
sci_request_dma().

Fixes: 73a19e4c03 ("serial: sh-sci: Add DMA support.")
Signed-off-by: Takatoshi Akiyama <takatoshi.akiyama.kj@ps.hitachi-solutions.com>
[Shimoda changes the commit log]
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2017-08-26 02:14:24 +01:00
..
hvc xen/events: don't bind non-percpu VIRQs with percpu chip 2015-06-02 12:08:17 +01:00
ipwireless tty: Fix low_latency BUG 2014-02-28 16:31:00 -08:00
serial serial: sh-sci: Fix panic when serial console and DMA are enabled 2017-08-26 02:14:24 +01:00
vt vt: clear selection before resizing 2017-02-23 03:54:22 +00:00
amiserial.c tty/amiserial: avoid interruptible_sleep_on 2014-01-07 17:05:21 -08:00
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: an overflow of multiplication in drivers/tty/cyclades.c 2013-12-20 12:21:57 -08:00
ehv_bytechan.c drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
goldfish.c goldfish: clean up the checkpatch warnings 2014-05-15 13:20:42 -07:00
isicom.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
Kconfig drivers/tty: ehv_bytechan fails to build as a module 2014-01-09 17:52:12 -06:00
Makefile tty: Add timed, writer-prioritized rw semaphore 2013-05-20 12:30:32 -07:00
metag_da.c tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15 09:32:21 +09:00
moxa.c TTY: add tty_port_tty_hangup helper 2013-03-18 16:24:29 -07:00
moxa.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
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 Fix common misspellings 2011-03-31 11:26:23 -03:00
n_gsm.c tty/n_gsm.c: fix a memory leak when gsmtty is removed 2015-05-28 10:00:01 +01:00
n_hdlc.c tty: n_hdlc: get rid of racy n_hdlc.tbuf 2017-03-16 02:27:27 +00:00
n_r3964.c tty: Always handle NULL flag ptr 2013-12-08 16:56:05 -08:00
n_tracerouter.c n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tracesink.c n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tracesink.h n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tty.c Fix OpenSSH pty regression on close 2016-08-22 22:37:53 +01:00
nozomi.c tty: Remove unnecessary semicolons 2013-10-16 13:08:16 -07:00
pty.c pty: make sure super_block is still valid in final /dev/tty close 2016-02-25 10:34:48 +00:00
rocket.c tty: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-08 17:09:07 -08:00
rocket.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
rocket_int.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
synclink.c synclink: fix info leak in ioctl 2014-03-17 16:13:23 -07:00
synclink_gt.c tty: synclink: avoid sleep_on race 2014-01-07 17:05:21 -08:00
synclinkmp.c synclink: fix info leak in ioctl 2014-03-17 16:13:23 -07:00
sysrq.c sysrq: attach sysrq handler correctly for 32-bit kernel 2017-03-16 02:26:56 +00:00
tty_audit.c audit: anchor all pid references in the initial pid namespace 2014-03-20 10:11:55 -04:00
tty_buffer.c tty: Fix GPF in flush_to_ldisc() 2016-01-25 10:43:37 +00:00
tty_io.c tty: Fix unsafe ldisc reference via ioctl(TIOCGETD) 2016-02-16 10:55:25 +00:00
tty_ioctl.c TTY: fix tty_wait_until_sent on 64-bit machines 2015-03-18 15:07:29 +00:00
tty_ldisc.c tty: Prevent ldisc drivers from re-using stale tty fields 2017-02-23 03:54:44 +00:00
tty_ldsem.c lockdep: Make held_lock->check and "int check" argument bool 2014-02-09 21:18:54 +01:00
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: delete non-required instances of include <linux/init.h> 2014-01-07 17:05:21 -08:00