| Age | Commit message (Collapse) | Author | Files | Lines |
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Commit 4a2b5fddd5 (Move tty lookup/reopen to caller) made the call to
tty_driver_lookup_tty conditional in tty_open. It doesn't look like it
was an intention. Or if it was, it was not documented in the changelog
and the code now looks weird. For example there would be no need to
remember the tty driver and tty index. Further the condition depends
on a tty which we drop a reference of already.
If I'm looking correctly, this should not matter thanks to the locking
currently done there. Thus, tty_driver->ttys[idx] cannot change under
our hands. But anyway, it makes sense to change that to the old
behaviour.
Introduced-in: v2.6.28-rc2
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Mistakenly, commit 64ba3dc3143d (tty: never hold BTM while getting
tty_mutex) switched one fail path in ptmx_open to not free the newly
allocated tty.
Fix that by jumping to the appropriate place. And rename the labels so
that it's clear what is going on there.
Introduced-in: v2.6.36-rc2
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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If tty_add_file fails at the point it is now, we have to revert all
the changes we did to the tty. It means either decrease all refcounts
if this was a tty reopen or delete the tty if it was newly allocated.
There was a try to fix this in v3.0-rc2 using tty_release in 0259894c7
(TTY: fix fail path in tty_open). But instead it introduced a NULL
dereference. It's because tty_release dereferences
filp->private_data, but that one is set even in our tty_add_file. And
when tty_add_file fails, it's still NULL/garbage. Hence tty_release
cannot be called there.
To circumvent the original leak (and the current NULL deref) we split
tty_add_file into two functions, making the latter non-failing. In
that case we may do the former early in open, where handling failures
is easy. The latter stays as it is now. So there is no change in
functionality.
The original bug (leak) was introduced by f573bd176 (tty: Remove
__GFP_NOFAIL from tty_add_file()). Thanks Dan for reporting this.
Later, we may split tty_release into more functions and call only some
of them in this fail path instead. (If at all possible.)
Introduced-in: v2.6.37-rc2
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When tty_driver_lookup_tty fails in tty_open, we forget to drop a
reference to the tty driver. This was added by commit 4a2b5fddd5 (Move
tty lookup/reopen to caller).
Fix that by adding tty_driver_kref_put to the fail path.
I will refactor the code later. This is for the ease of backporting to
stable.
Introduced-in: v2.6.28-rc2
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Currently, ".setup" function is not set.
As a result, when detecting our IOH's uart device without pch_uart, kernel panic
occurs at the following of pciserial_init_ports().
for (i = 0; i < nr_ports; i++) {
if (quirk->setup(priv, board, &serial_port, i))
break;
So, this patch adds the ".setup" function.
We can use pci_default_setup because our IOH's uart is compatible with 16550.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When running a Fedora 15 (x86) on an x86_64 kernel, in the boot process
plymouthd complains about those two missing ioctls:
[ 2.581783] ioctl32(plymouthd:186): Unknown cmd fd(10) cmd(00005457){t:'T';sz:0} arg(ffb6a5d0) on /dev/tty1
[ 2.581803] ioctl32(plymouthd:186): Unknown cmd fd(10) cmd(00005456){t:'T';sz:0} arg(ffb6a680) on /dev/tty1
both ioctl functions work on the 'struct termios' resp. 'struct termios2',
which has the same size (36 bytes resp. 44 bytes) on x86 and x86_64,
so it's just a matter of converting the pointer from userland.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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printk only works for "registered consoles." Currently, the hvc_console
code calls register_console() from hvc_instantiate(), but that's only
used in the early console case. In hvc_alloc(), register_console() was
not called.
Add a call to register_console() in hvc_alloc(), set up the index in
the hvc_console, and set up the necessary vtermnos[] and cons_op[]
entries so that printk functions work.
Signed-off-by: Miche Baker-Harvey <miche@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Introduce the config option CONFIG_VT_CONSOLE_SLEEP in order to cleanup
the #if defined ugliness for the vt suspend support functions. Note that
CONFIG_VT_CONSOLE is already dependant on CONFIG_VT.
The function pm_set_vt_switch is actually dependant on CONFIG_VT and not
CONFIG_PM_SLEEP. This fixes a compile error when CONFIG_PM_SLEEP is
not set:
drivers/tty/vt/vt_ioctl.c:1794: error: redefinition of 'pm_set_vt_switch'
include/linux/suspend.h:17: error: previous definition of 'pm_set_vt_switch' was here
Also, remove the incorrect path from the comment in console.c.
[rjw: Replaced #if defined() with #ifdef in suspend.h.]
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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HW_CONSOLE doesn't need to depend on both VT and !S390 as VT already
depends on !S390.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (29 commits)
MIPS: Call oops_enter, oops_exit in die
staging/octeon: Software should check the checksum of no tcp/udp packets
MIPS: Octeon: Enable C0_UserLocal probing.
MIPS: No branches in delay slots for huge pages in handle_tlbl
MIPS: Don't clobber CP0_STATUS value for CONFIG_MIPS_MT_SMTC
MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE
MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)
MIPS: Compat: Use 32-bit wrapper for compat_sys_futex.
MIPS: Do not use EXTRA_CFLAGS
MIPS: Alchemy: DB1200: Disable cascade IRQ in handler
SERIAL: Lantiq: Set timeout in uart_port
MIPS: Lantiq: Fix setting the PCI bus speed on AR9
MIPS: Lantiq: Fix external interrupt sources
MIPS: tlbex: Fix build error in R3000 code.
MIPS: Alchemy: Include Au1100 in PM code.
MIPS: Alchemy: Fix typo in MAC0 registration
MIPS: MSP71xx: Fix build error.
MIPS: Handle __put_user() sleeping.
MIPS: Allow forced irq threading
MIPS: i8259: Mark cascade interrupt non-threaded
...
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This patch fixes the following build error caused by commit
85888069cf5d ("tty: use of_match_ptr() for of_match_table entry").
The problem was a missing #include <linux/of.h> which is where
of_match_ptr() is defined.
drivers/tty/serial/altera_jtaguart.c:483:3: error: implicit declaration of function 'of_match_ptr' [-Werror=implicit-function-declaration]
drivers/tty/serial/altera_jtaguart.c:483:34: error: 'altera_jtaguart_match' undeclared here (not in a function)
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Tobias Klauser <tklauser@distanz.ch> (maintainer:ALTERA UART/JTAG...)
Cc: Alan Cox <alan@linux.intel.com> (maintainer:SERIAL DRIVERS)
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Use the new of_match_ptr() macro for the of_match_table
pointer entry to avoid having to #dfine match NULL
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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My main concern here was the line that said:
copy_count = min_t(unsigned short,count,SCABUFSIZE);
"count" is an unsigned int here so the cast to unsigned short
truncates the upper bits. So if count is 0x10000 then copy_count is
0 and the loop never exits.
"count" comes from skb->len in hdlcdev_xmit().
The other min_t() changes are just cleanups.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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n_gsm use a simple approach: every writing to fifo correspond exactly one
reading from fifo. There are no problem in this approach until we read
less bytes then we write. As result fifo may owerflow. This leads to packet
loss and very slow responce.
For example, this happens with ping packets (about 96 byte each) and default
gsm->mtu = 64. As result we get 50 sec ping timeout and 20% packet loss.
Fix the problem by reading and sending all data from the fifo
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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in adaption=2 case we should put 1 or 2 byte with modem status bits
at the beginning of a buffer pointed by "dp". n_gsm use 1 byte case,
so it allocate a buffer of len + 1 size. As result we should:
* put 1 byte of modem status bits
* increase data pointer
* put "len" bytes of data
but actually we have:
* increase first byte with the value of modem status bits
* decrease "len"
* put orig_len - 1 bytes of data starting from the buffer beggining
This is evidently wrong.
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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On my BIOSTAR TA890FXE the ttyS0 ends up spewing:
[904682.485933] ttyS0: LSR safety check engaged!
[904692.505895] ttyS0: LSR safety check engaged!
[904702.525972] ttyS0: LSR safety check engaged!
[904712.545967] ttyS0: LSR safety check engaged!
[904722.566125] ttyS0: LSR safety check engaged!
..
lets limit it so it won't be the only thing visible
in the ring buffer.
CC: Alan Cox <alan@linux.intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Clear bitmask was not inverted before masking modem_tx.
Calling ioctl(fd, TIOCMBIC, TIOCM_RTS) results in:
[ 197.430000] pre_modem_tx: 0x00000006
[ 197.430000] clear: 0x00000004
[ 197.430000] set: 0x00000000
[ 197.440000] post_modem_tx: 0x00000004
which is wrong.
Signed-off-by: Nikola Diklic-Perin <diklic.perin.nikola@gmail.com>
Acked-by: Alan Cox <alan@linx.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The ePAPR hypervisor byte channel console driver only supports one byte
channel as a console, and the byte channel handle is stored in a global
variable. It doesn't make any sense to pass that handle as a parameter
to the console functions, since these functions already have access to the
global variable.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The following patch removed uart_change_pm() in uart_resume_port():
commit 5933a161abcb8d83a2c145177f48027c3c0a8995
Author: Yin Kangkai <kangkai.yin@linux.intel.com>
serial-core: reset the console speed on resume
It will break the pxa serial driver when the system resumes from suspend mode
as it will try to set baud rate divider register in set_termios but with
clock off. The register value can not be set correctly on some platform if
the clock is disabled. The pxa driver will check the value and report the
following warning:
------------[ cut here ]------------
WARNING: at drivers/tty/serial/pxa.c:545 serial_pxa_set_termios+0x1dc/0x250()
Modules linked in:
[<c0281f30>] (unwind_backtrace+0x0/0xf0) from [<c029341c>] (warn_slowpath_common+0x4c/0x64)
[<c029341c>] (warn_slowpath_common+0x4c/0x64) from [<c029344c>] (warn_slowpath_null+0x18/0x1c)
[<c029344c>] (warn_slowpath_null+0x18/0x1c) from [<c044b1e4>] (serial_pxa_set_termios+0x1dc/0x250)
[<c044b1e4>] (serial_pxa_set_termios+0x1dc/0x250) from [<c044a840>] (uart_resume_port+0x128/0x2dc)
[<c044a840>] (uart_resume_port+0x128/0x2dc) from [<c044bbe0>] (serial_pxa_resume+0x18/0x24)
[<c044bbe0>] (serial_pxa_resume+0x18/0x24) from [<c0454d34>] (platform_pm_resume+0x40/0x4c)
[<c0454d34>] (platform_pm_resume+0x40/0x4c) from [<c0457ebc>] (pm_op+0x68/0xb4)
[<c0457ebc>] (pm_op+0x68/0xb4) from [<c0458368>] (device_resume+0xb0/0xec)
[<c0458368>] (device_resume+0xb0/0xec) from [<c04584c8>] (dpm_resume+0xe0/0x194)
[<c04584c8>] (dpm_resume+0xe0/0x194) from [<c0458588>] (dpm_resume_end+0xc/0x18)
[<c0458588>] (dpm_resume_end+0xc/0x18) from [<c02c518c>] (suspend_devices_and_enter+0x16c/0x1ac)
[<c02c518c>] (suspend_devices_and_enter+0x16c/0x1ac) from [<c02c5278>] (enter_state+0xac/0xdc)
[<c02c5278>] (enter_state+0xac/0xdc) from [<c02c48ec>] (state_store+0xa0/0xbc)
[<c02c48ec>] (state_store+0xa0/0xbc) from [<c0408f7c>] (kobj_attr_store+0x18/0x1c)
[<c0408f7c>] (kobj_attr_store+0x18/0x1c) from [<c034a6a4>] (sysfs_write_file+0x108/0x140)
[<c034a6a4>] (sysfs_write_file+0x108/0x140) from [<c02fb798>] (vfs_write+0xac/0x134)
[<c02fb798>] (vfs_write+0xac/0x134) from [<c02fb8cc>] (sys_write+0x3c/0x68)
[<c02fb8cc>] (sys_write+0x3c/0x68) from [<c027c700>] (ret_fast_syscall+0x0/0x2c)
---[ end trace 88289eceb4675b04 ]---
This patch fix the problem by adding the power on opertion back for uart
console when console_suspend_enabled is true.
Signed-off-by: Ning Jiang <ning.jiang@marvell.com>
Tested-by: Mayank Rana <mrana@codeaurora.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Cc: gregkh@suse.de
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The top of <linux/irq.h> has this comment:
* Please do not include this file in generic code. There is currently
* no requirement for any architecture to implement anything held
* within this file.
*
* Thanks. --rmk
Remove inclusion of <linux/irq.>, to prevent the following compile error
from happening soon:
| include/linux/irq.h:132: error: redefinition of ‘struct irq_data’
| include/linux/irq.h:286: error: redefinition of ‘struct irq_chip’
drivers/tty/vt/keyboard.c needs to include <asm/irq_regs.h> for get_irq_regs():
| drivers/tty/vt/keyboard.c:497: error: implicit declaration of function ‘get_irq_regs’
| drivers/tty/vt/keyboard.c:497: warning: initialization makes pointer from integer without a cast
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This driver has been broken at least since 2008. At that time,
a88487c79b (Fix compile errors in SGI console drivers) broke this
driver completely.
And since nobody noticed for the past 3 years, move it into staging. I
think this will rot there and we will throw it away completely after
some time. Or maybe someone will volunteer to fix it ;).
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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KERN_CRIT is too high, replace those KERN_CRIT with KERN_ERR or KERN_WARNING.
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The EFR (Enhenced-Features-Register) is located at a different offset
than the other devices supporting UART_CAP_EFR. This change add a special
setup quick to set UPF_EXAR_EFR on the port. UPF_EXAR_EFR is then used to
the port type to PORT_XR17D15X since it is for sure a XR17D15X uart.
Signed-off-by: Søren Holm <sgh@sgh.dk>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch fixes the following build error:
drivers/tty/serial/crisv10.c:4453: error: 'if_ser0' undeclared (first use in this function): 2 errors in 2 logs
v3.1-rc4/cris/cris-allmodconfig v3.1-rc4/cris/cris-allyesconfig
drivers/tty/serial/crisv10.c:4453: error: (Each undeclared identifier is reported only once: 2 errors in 2 logs
v3.1-rc4/cris/cris-allmodconfig v3.1-rc4/cris/cris-allyesconfig
drivers/tty/serial/crisv10.c:4453: error: for each function it appears in.): 2 errors in 2 logs
v3.1-rc4/cris/cris-allmodconfig v3.1-rc4/cris/cris-allyesconfig
"if_ser0" is a typo, it should be "if_serial_0".
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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linux/tty_flip.h is included in linux/serial_core.h. But this may (and
will) change in the future. Then we would get build errors such as:
.../tty/serial/max3107.c: In function ‘put_data_to_circ_buf’:
.../tty/serial/max3107.c:149:2: error: implicit declaration of function ‘tty_insert_flip_string’
So fix all the drviers which call tty flip buffer helpers to really
include linux/tty_flip.h. And also make sure that those include
linux/tty.h when operating with struct tty_struct.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The code is dead at least since 2002. So remove it to not distort git
grep output (about port.tty usage).
Remove the whole do_softirq tasklet as it's noop now.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When mutex_lock is not called, mutex_unlock is sometimes called.
This deletes unnecessary goto and makes modifications so that
mutex_unlock is called.
[ 8.304000] WARNING: at kernel/muex-debug.c:78
[ 8.304000] Modules linked in:
[ 8.304000]
[ 8.304000] Pid : 114, Comm: modprobe
[ 8.304000] CPU : 0 Not tainted (3.1.0-rc3-next-20110826 #810)
[ 8.304000]
[ 8.304000] PC is at debug_mutex_unlock+0xf4/0x120
[ 8.304000] PR is at debug_mutex_unlock+0xe6/0x120
[ 8.304000] PC : 80051114 SP : 9f02de58 SR : 400081f1 TEA : 295cf4f2
[ 8.304000] R0 : 00000001 R1 : 00000000 R2 : 0000000f R3 : 00000000
[ 8.304000] R4 : 9fc63158 R5 : 00000000 R6 : 00000001 R7 : 9fe1de78
[ 8.304000] R8 : 805c6b2c R9 : 80003920 R10 : 00000000 R11 : 805c6b2c
[ 8.304000] R12 : 80425ca0 R13 : 00000000 R14 : 9f02de58
[ 8.304000] MACH: 00000003 MACL: 00000000 GBR : 296e1678 PR : 80051106
[ 8.304000]
[ 8.304000] Call trace:
[ 8.304000] [<804236c6>] __mutex_unlock_slowpath+0x46/0x120
[ 8.304000] [<804237aa>] mutex_unlock+0xa/0x20
[ 8.304000] [<80240ed6>] uart_close+0x76/0x2c0
[ 8.304000] [<80223b98>] tty_release+0xf8/0x5c0
[ 8.304000] [<800a93a6>] lookup_object+0x26/0xa0
[ 8.304000] [<80063f6a>] call_rcu+0x8a/0xc0
[ 8.304000] [<800a944a>] put_object+0x2a/0x60
[ 8.304000] [<80003920>] arch_local_irq_restore+0x0/0x40
[ 8.304000] [<800af320>] fput+0x180/0x2c0
[ 8.304000] [<800af248>] fput+0xa8/0x2c0
[ 8.304000] [<800ab1a8>] filp_close+0x48/0xc0
[ 8.304000] [<800ab29a>] sys_close+0x7a/0x100
[ 8.304000] [<8000825a>] syscall_call+0xc/0x10
[ 8.304000] [<800ab220>] sys_close+0x0/0x100
[ 8.304000]
[ 8.304000] Code:
[ 8.304000] 8005110e: mov.l @r1, r1
[ 8.304000] 80051110: tst r1, r1
[ 8.304000] 80051112: bf 80051116
[ 8.304000] ->80051114: trapa #62
[ 8.304000] 80051116: mov.l @r8, r1
[ 8.304000] 80051118: tst r1, r1
[ 8.304000] 8005111a: bt.s 8005104c
[ 8.304000] 8005111c: mov #0, r1
[ 8.304000] 8005111e: bra 80051056
[ 8.304000]
[ 8.304000] ---[ end trace e8f8e04c313f429b ]---
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Errata E20: UART: Character Timeout interrupt remains set under certain
software conditions.
Implication: The software servicing the UART can be trapped in an infinite loop.
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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As of_alias_get_id() gets fixed and ready for use, the patch adds the
of_alias_get_id() reference back to imx serial driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
[grant.likely: changed pr_err() to dev_err(), dropped unnecessary else]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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Without this patch apps using readline hang.
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-serial@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2687/
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This adds a udbg and an hvc console backend for supporting a console
using the OPAL console interfaces.
On OPAL v1 we have hvc0 mapped to whatever console the system was
configured for (network or hvsi serial port) via the service
processor.
On OPAL v2 we have hvcN mapped to the Nth console provided by OPAL
which generally corresponds to:
hvc0 : network console (raw protocol)
hvc1 : serial port S1 (hvsi)
hvc2 : serial port S2 (hvsi)
Note: At this point, early debug console only works with OPAL v1
and shouldn't be enabled in a normal kernel.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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The Power platform requires the partner info buffer to be page aligned
otherwise it will fail the partner info hcall with H_PARAMETER. Switch
from using kmalloc to allocate this buffer to __get_free_page to ensure
page alignment.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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(Merge in order to get the PCIe mps/mrss code fixes)
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This iotype is only used by the legacy_serial code in powerpc, so the
code should live there, rather than be compiled in for every 8250
driver.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: linux-serial@vger.kernel.org
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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On some sh-mobile systems there are more than one DMA controllers, that
can be used for serial ports. Specifying a DMA device in sh-sci platform
data unnecessarily restricts the driver to only use one DMA controller.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
[Fixed the trivial conflict in include/linux/serial_sci.h]
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Fast-forward merge with Linus to be able to merge patches
based on more recent version of the tree.
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Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Fix these errors:
drivers/tty/serial/crisv10.c:4453: error: 'if_ser0' undeclared (first use in this function): 2 errors in 2 logs
drivers/tty/serial/crisv10.c:4453: error: (Each undeclared identifier is reported only once: 2 errors in 2 logs
drivers/tty/serial/crisv10.c:4453: error: for each function it appears in.): 2 errors in 2 logs
"if_ser0" is a typo, it should be "if_serial_0".
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x:
sh: fix the compile error in setup-sh7757.c
serial: sh-sci: report CTS as active for get_mctrl
sh: Add unaligned memory access for PC relative intructions
sh: Fix unaligned memory access for branches without delay slots
sh: Fix up fallout from cpuidle changes.
serial: sh-sci: console Runtime PM support
sh: Fix conflicting definitions of ptrace_triggered
serial: sh-sci: fix DMA build by including dma-mapping.h
serial: sh-sci: Fix up default regtype probing.
sh: intc: enable both edges GPIO interrupts on sh7372
shwdt: fix usage of mod_timer
clocksource: sh_cmt: wait for CMCNT on init V2
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Add devicetree support to the msm_serial driver. Clocks are still
queried by direct name from the driver until device tree clock support
is implemented.
Change-Id: Ia6b2ddfcf1e5dc3bd25dd502662f971202e6d56f
Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
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Device tree iomem resources are only accessible by index, and not by
name. The msm_serial devices always have either 1 or 2 iomem
resources, that are always in the same order. Convert the
platform_get_resource_byname into just platform_get_resource to
facilitate device tree conversion.
Change-Id: I4fd0f1037e07f2725a2a25c7b07dea2ca9397db7
Signed-off-by: David Brown <davidb@codeaurora.org>
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sh-sci.c sets hardware up and then let the HW do all flow controls.
There is no software code, nor needs to get/set real CTS signal.
But, when turning CRTSCTS on through termios, uart_set_termios() in
serial_core.c checks CTS, and stops TX if it is inactive at the moment.
Because sci_get_mctrl() returns a fixed value DTR|RTS|DSR but CTS,
the sequence
open -> set CRTSCTS -> write
hit the case and stop working, no more outputs.
This patch makes sci_get_mctrl() report CTS in addition.
Signed-off-by: Takashi YOSHII <takashi.yoshii.zj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ARM: mach-shmobile: sh7372 LCDC1 suspend fix V2 (incremental)
OMAP: omap_device: only override _noirq methods, not normal suspend/resume
PM / Runtime: Correct documentation of pm_runtime_irq_safe()
ARM: mach-shmobile: sh7372 LCDC1 suspend fix
sh-sci / PM: Use power.irq_safe
PM: Use spinlock instead of mutex in clock management functions
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The Synopsys DesignWare 8250 is an 8250 that has an extra interrupt that
gets raised when writing to the LCR when busy. To handle this we need
special serial_out, serial_in and handle_irq methods. Add a new
platform driver that uses these accessors.
Cc: Alan Cox <alan@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Allow modules to use the normal 8250 irq handler inside their own.
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Jiri Slaby
Tomoya MORINAGA
Thomas Meyer
Miche Baker-Harvey
H Hartley Sweeten
Paul Bolle
Linus Torvalds
Grant Likely
Ben Dooks
Dan Carpenter
Russell King
Mikhail Kshevetskiy
Konrad Rzeszutek Wilk
Nikola Diklic-Perin
Timur Tabi
Yong Zhang
Ning Jiang
Andi Kleen
Geert Uytterhoeven
WANG Cong
Søren Holm
Nobuhiro Iwamatsu
Marcus Folkesson
Shawn Guo
John Crispin
Benjamin Herrenschmidt
Brian King
Arnd Bergmann
Guennadi Liakhovetski
Jiri Kosina
Vitaliy Ivanov
David Brown
Yoshii Takashi
Jamie Iles