iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
af6d17cdc8
linux/drivers/tty
History
Tomoya MORINAGA af6d17cdc8 pch_uart: Fix dma channel unallocated issue 
This driver anticipates pch_uart_verify_port() is not called
during installation.
However, actually pch_uart_verify_port() is called during
installation.
As a result, memory access violation occurs like below.

0. initial value: use_dma=0
1. starup()
    - dma channel is not allocated because use_dma=0
2. pch_uart_verify_port()
    - Set use_dma=1
3. UART processing acts DMA mode because use_dma=1
     - memory access violation occurs!

This patch fixes the issue.

Solution:
Whenever pch_uart_verify_port() is called and then
dma channel is not allocated, the channel should be allocated.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-18 15:19:50 -07:00
..
hvc powerpc+sparc/vio: Modernize driver registration 2012-03-28 11:33:24 +11:00
ipwireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-03-20 21:04:47 -07:00
serial pch_uart: Fix dma channel unallocated issue 2012-04-18 15:19:50 -07:00
vt printk(): add KERN_CONT where needed in hpet and vt code 2012-04-09 10:30:39 -07:00
amiserial.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
bfin_jtag_comm.c TTY: remove re-assignments to tty_driver members 2012-03-08 11:37:58 -08:00
cyclades.c TTY: remove unneeded tty->index checks 2012-03-08 11:42:21 -08:00
ehv_bytechan.c TTY: remove re-assignments to tty_driver members 2012-03-08 11:37:58 -08:00
isicom.c Documentation: remove references to /etc/modprobe.conf 2012-03-30 16:03:15 -07:00
Kconfig tty/powerpc: early udbg consoles can't be modules 2012-02-24 16:11:50 -08:00
Makefile tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver 2011-08-23 10:32:56 -07:00
moxa.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
moxa.h
mxser.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
mxser.h
n_gsm.c TTY: remove re-assignments to tty_driver members 2012-03-08 11:37:58 -08:00
n_hdlc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
n_r3964.c
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
nozomi.c TTY: remove re-assignments to tty_driver members 2012-03-08 11:37:58 -08:00
pty.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
rocket_int.h
rocket.c TTY: remove unneeded tty->index checks 2012-03-08 11:42:21 -08:00
rocket.h
synclink_gt.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
synclink.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
synclinkmp.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
sysrq.c sysrq: use SEND_SIG_FORCED instead of force_sig() 2012-04-05 15:25:50 -07:00
tty_audit.c
tty_buffer.c
tty_io.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
tty_ioctl.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
tty_ldisc.c Merge 3.2-rc3 into tty-next to handle merge conflict in tty_ldisc.c 2011-11-26 20:07:25 -08:00
tty_mutex.c TTY: remove tty_locked 2011-08-23 10:34:07 -07:00
tty_port.c TTY: fix UV serial console regression 2012-01-24 12:55:37 -08:00