14 Feb, 2013
5 commits
-
Now that N_TTY uses tty->disc_data for its private data,
'subclass' ldiscs cannot use ->disc_data for their own private data.
(This is a regression is v3.8-rc1)Use pps_lookup_dev to associate the tty with the pps source instead.
This fixes a crashing regression in 3.8-rc1.
Signed-off-by: George Spelvin
Acked-by: Rodolfo Giometti
Cc: stable
Signed-off-by: Greg Kroah-Hartman -
The PPS serial line discipline wants to attach a PPS device to a tty
without changing the tty code to add a struct pps_device * pointer.Since the number of PPS devices in a typical system is generally very low
(n=1 is by far the most common), it's practical to search the entire list
of allocated pps devices. (We capture the timestamp before the lookup,
so the timing isn't affected.)It is a bit ugly that this function, which is part of the in-kernel
PPS API, has to be in pps.c as opposed to kapi,c, but that's not
something that affects users.Signed-off-by: George Spelvin
Acked-by: Rodolfo Giometti
Cc: stable
Signed-off-by: Greg Kroah-Hartman -
Use big and little endian accessors function to reflect system configuration.
Detection is done via control register in ulite_request_port.Tested on Microblaze LE, BE, PPC440 and Arm zynq.
Signed-off-by: Michal Simek
Acked-by: Arnd Bergmann
Signed-off-by: Greg Kroah-Hartman -
Clean coding style and sparse warnings.
Signed-off-by: Michal Simek
Signed-off-by: Greg Kroah-Hartman -
-replace "baud" with "current-speed"
-if uart alias doesn't exist in DT, don't abort, pick 0Signed-off-by: Vineet Gupta
Cc: Greg Kroah-Hartman
Cc: Grant Likely
Cc: Arnd Bergmann
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Rob Herring
Cc: Rob Landley
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman
09 Feb, 2013
1 commit
-
Since SERIAL_CORE needs GENERIC_HARDIRQS (see below) and most serial drivers
select it, just add a GENERIC_HARDIRQS dependency to all serial drivers.Fixes the compile error below:
drivers/tty/serial/serial_core.c: In function ‘uart_set_info’:
drivers/tty/serial/serial_core.c:725:2: error: implicit declaration of function ‘irq_canonicalize’Cc: Jiri Slaby
Signed-off-by: Heiko Carstens
Signed-off-by: Greg Kroah-Hartman
07 Feb, 2013
5 commits
-
This reverts commit cdc8da3998dcc50cee2f81904c16ebdbd7ec2cee.
In my attempt to fix a build warning on arm randconfig a build error on
imx_v6_v7_defconfig was introduced, so revert it for now.Reported-by: kbuild test robot
Signed-off-by: Fabio Estevam
Signed-off-by: Greg Kroah-Hartman -
Backing out changes made in earlier TTY removal patch. Switched
to only one dependency in SERPORT on TTY instead of many incorrect
dependencies.Signed-off-by: Joe Millenbach
Reported-by: Dmitry Torokhov
Signed-off-by: Greg Kroah-Hartman -
Getting the tty kref in dashtty_timer() is no longer necessary since it
isn't needed in fetch_data() any longer (due to changes which make the
tty flip functions refer to tty_ports instead of tty_structs), so just
pass around a channel number instead.Signed-off-by: James Hogan
Acked-by: Jiri Slaby
Signed-off-by: Greg Kroah-Hartman -
Add a TTY driver for communicating over a Meta DA (Debug Adapter)
channel using the bios channel SWITCH operation.Signed-off-by: James Hogan
Cc: Jiri Slaby
Acked-by: Greg Kroah-Hartman
Signed-off-by: Greg Kroah-Hartman -
This was caused by commit 16559ae48c76 ("kgdb: remove #include
from kgdb.h") from the tty tree.Signed-off-by: Stephen Rothwell
Cc: David S. Miller
Signed-off-by: Greg Kroah-Hartman
06 Feb, 2013
5 commits
-
If CONFIG_CONSOLE_POLL is not defined, the following build warning happens:
drivers/tty/serial/imx.c:274:13: warning: 'imx_port_ucrs_save' defined but not used [-Wunused-function]
drivers/tty/serial/imx.c:283:13: warning: 'imx_port_ucrs_restore' defined but not used [-Wunused-function]Move imx_port_ucrs_saver/restore under CONFIG_CONSOLE_POLL ifdef block to fix it.
Signed-off-by: Fabio Estevam
Signed-off-by: Greg Kroah-Hartman -
No need for two separate return statements, consolidate them.
Signed-off-by: Tobias Klauser
Signed-off-by: Greg Kroah-Hartman -
No need for two separate return statements, consolidate them.
Signed-off-by: Tobias Klauser
Signed-off-by: Greg Kroah-Hartman -
…Tx FIFO IRQ generation
Original configuration of Rx FIFO threshold contained an error
that resulted Rx threshold to be effectively set to 1 character
instead of 16 characters, as noted in comments.
Checking LSR to contain UART_LSR_THRE bit set caused issue when
not all UART_IER_THRI interrupts have been properly handled.
This caused gap in Tx data, visible on high baud rates using
oscilloscope.
Setting OMAP_UART_SCR_TX_EMPTY bit in SCR caused UART_IER_THRI
interrupt to be raised only when Tx FIFO and Tx shift registers
are empty.Signed-off-by: Alexey Pelykh <alexey.pelykh@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -
Tegra is only booted through device-tree now; there are no board files
left that use this function. Hence, don't export it. Move the static
inline definition into of_serial.c, so we can delete of_serial.h too.Signed-off-by: Stephen Warren
Signed-off-by: Greg Kroah-Hartman
05 Feb, 2013
8 commits
-
Multiple slave pty opens may be performed in parallel with the
master open. Of course, all the slave opens will fail because the
master pty is still locked but during this time the slave pty
count will be artificially greater than 1. This is should not
cause the master pty open to fail.Signed-off-by: Peter Hurley
Signed-off-by: Greg Kroah-Hartman -
If the tty driver open() fails, the tty driver close() is still
called during the resultant tty release.Signed-off-by: Peter Hurley
Signed-off-by: Greg Kroah-Hartman -
If the master and slave ptys are opened in parallel, the slave open
fails because the pty is still locked. This is as designed.
However, pty_close() is still called for the slave pty which sets
TTY_OTHER_CLOSED in the master pty. This can cause the master open
to fail as well.Use a common pattern in other tty drivers by setting TTY_IO_ERROR
until the open is successful and only closing the pty if not set.Note: the master pty always closes regardless of whether the open
was successful, so that proper cleanup can occur.Signed-off-by: Peter Hurley
Signed-off-by: Greg Kroah-Hartman -
If pmtx_open() fails to get a slave inode or fails the pty_open(),
the tty is released as part of the error cleanup. As evidenced by the
first BUG stacktrace below, pty_close() assumes that the linked pty has
a valid, initialized inode* stored in driver_data.Also, as evidenced by the second BUG stacktrace below, pty_unix98_shutdown()
assumes that the master pty's driver_data has been initialized.1) Fix the invalid assumption in pty_close().
2) Initialize driver_data immediately so proper devpts fs cleanup occurs.Fixes this BUG:
[ 815.868844] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[ 815.869018] IP: [] devpts_pty_kill+0x1c/0xa0
[ 815.869190] PGD 7c775067 PUD 79deb067 PMD 0
[ 815.869315] Oops: 0000 [#1] PREEMPT SMP
[ 815.869443] Modules linked in: kvm_intel kvm snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi microcode snd_rawmidi psmouse serio_raw snd_seq_midi_event snd_seq snd_timer$
[ 815.870025] CPU 0
[ 815.870143] Pid: 27819, comm: stress_test_tty Tainted: G W 3.8.0-next-20130125+ttypatch-2-xeon #2 Bochs Bochs
[ 815.870386] RIP: 0010:[] [] devpts_pty_kill+0x1c/0xa0
[ 815.870540] RSP: 0018:ffff88007d3e1ac8 EFLAGS: 00010282
[ 815.870661] RAX: ffff880079c20800 RBX: 0000000000000000 RCX: 0000000000000000
[ 815.870804] RDX: ffff880079c209a8 RSI: 0000000000000286 RDI: 0000000000000000
[ 815.870933] RBP: ffff88007d3e1ae8 R08: 0000000000000000 R09: 0000000000000000
[ 815.871078] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88007bfb7e00
[ 815.871209] R13: 0000000000000005 R14: ffff880079c20c00 R15: ffff880079c20c00
[ 815.871343] FS: 00007f2e86206700(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000
[ 815.871495] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 815.871617] CR2: 0000000000000028 CR3: 000000007ae56000 CR4: 00000000000006f0
[ 815.871752] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 815.871902] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 815.872012] Process stress_test_tty (pid: 27819, threadinfo ffff88007d3e0000, task ffff88007c874530)
[ 815.872012] Stack:
[ 815.872012] ffff88007bfb7e00 ffff880079c20c00 ffff88007bfb7e00 0000000000000005
[ 815.872012] ffff88007d3e1b08 ffffffff81417be7 ffff88007caa9bd8 ffff880079c20800
[ 815.872012] ffff88007d3e1bc8 ffffffff8140e5f8 0000000000000000 0000000000000000
[ 815.872012] Call Trace:
[ 815.872012] [] pty_close+0x157/0x170
[ 815.872012] [] tty_release+0x138/0x580
[ 815.872012] [] ? _raw_spin_lock+0x23/0x30
[ 815.872012] [] ? _raw_spin_unlock+0x1a/0x40
[ 815.872012] [] ? __mutex_unlock_slowpath+0x48/0x60
[ 815.872012] [] ptmx_open+0x11f/0x180
[ 815.872012] [] chrdev_open+0x9b/0x1c0
[ 815.872012] [] do_dentry_open+0x203/0x290
[ 815.872012] [] ? cdev_put+0x30/0x30
[ 815.872012] [] finish_open+0x35/0x50
[ 815.872012] [] do_last+0x6fe/0xe90
[ 815.872012] [] ? link_path_walk+0x7f/0x880
[ 815.872012] [] ? cpuacct_charge+0x75/0x80
[ 815.872012] [] path_openat+0xbc/0x4e0
[ 815.872012] [] ? __schedule+0x400/0x7f0
[ 815.872012] [] ? tty_release+0x496/0x580
[ 815.872012] [] do_filp_open+0x41/0xa0
[ 815.872012] [] ? _raw_spin_unlock+0x1a/0x40
[ 815.872012] [] ? __alloc_fd+0xe9/0x140
[ 815.872012] [] do_sys_open+0xf4/0x1e0
[ 815.872012] [] sys_open+0x21/0x30
[ 815.872012] [] system_call_fastpath+0x16/0x1b
[ 815.872012] Code: 0f 1f 80 00 00 00 00 45 31 e4 eb d7 0f 0b 90 0f 1f 44 00 00 55 48 89 e5 48 83 ec 20 48 89 5d e8 48 89 fb 4c 89 65 f0 4c 89 6d f8 8b 47 28 48 81 78 58 d1 1c 0$
[ 815.872012] RIP [] devpts_pty_kill+0x1c/0xa0
[ 815.872012] RSP
[ 815.872012] CR2: 0000000000000028
[ 815.897036] ---[ end trace eadf50b7f34e47d5 ]---Fixes this BUG also:
[ 608.366836] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[ 608.366948] IP: [] devpts_kill_index+0x18/0x70
[ 608.367050] PGD 7c75b067 PUD 7b919067 PMD 0
[ 608.367135] Oops: 0000 [#1] PREEMPT SMP
[ 608.367201] Modules linked in: kvm_intel kvm snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event microcode snd_seq psmouse snd_timer snd_seq_device serio_raw snd mac_hid soundcore snd_page_alloc rfcomm virtio_balloon parport_pc bnep bluetooth ppdev i2c_piix4 lp parport floppy
[ 608.367617] CPU 2
[ 608.367669] Pid: 1918, comm: stress_test_tty Tainted: G W 3.8.0-next-20130125+ttypatch-2-xeon #2 Bochs Bochs
[ 608.367796] RIP: 0010:[] [] devpts_kill_index+0x18/0x70
[ 608.367885] RSP: 0018:ffff88007ae41a88 EFLAGS: 00010286
[ 608.367951] RAX: ffffffff81417e80 RBX: ffff880036472400 RCX: 0000000180400028
[ 608.368010] RDX: ffff880036470004 RSI: 0000000000000004 RDI: 0000000000000000
[ 608.368010] RBP: ffff88007ae41a98 R08: 0000000000000000 R09: 0000000000000001
[ 608.368010] R10: ffffea0001f22e40 R11: ffffffff814151d5 R12: 0000000000000004
[ 608.368010] R13: ffff880036470000 R14: 0000000000000004 R15: ffff880036472400
[ 608.368010] FS: 00007ff7a5268700(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000
[ 608.368010] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 608.368010] CR2: 0000000000000028 CR3: 000000007a0fd000 CR4: 00000000000006e0
[ 608.368010] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 608.368010] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 608.368010] Process stress_test_tty (pid: 1918, threadinfo ffff88007ae40000, task ffff88003688dc40)
[ 608.368010] Stack:
[ 608.368010] ffff880036472400 0000000000000001 ffff88007ae41aa8 ffffffff81417e98
[ 608.368010] ffff88007ae41ac8 ffffffff8140c42b ffff88007ac73100 ffff88007ac73100
[ 608.368010] ffff88007ae41b98 ffffffff8140ead5 ffff88007ae41b38 ffff88007ca40e40
[ 608.368010] Call Trace:
[ 608.368010] [] pty_unix98_shutdown+0x18/0x20
[ 608.368010] [] release_tty+0x3b/0xe0
[ 608.368010] [] __tty_release+0x575/0x5d0
[ 608.368010] [] ? _raw_spin_lock+0x23/0x30
[ 608.368010] [] ? _raw_spin_unlock+0x1a/0x40
[ 608.368010] [] ? __mutex_unlock_slowpath+0x48/0x60
[ 608.368010] [] tty_open+0x449/0x5f0
[ 608.368010] [] chrdev_open+0x9b/0x1c0
[ 608.368010] [] do_dentry_open+0x203/0x290
[ 608.368010] [] ? cdev_put+0x30/0x30
[ 608.368010] [] finish_open+0x35/0x50
[ 608.368010] [] do_last+0x6fe/0xe90
[ 608.368010] [] ? link_path_walk+0x7f/0x880
[ 608.368010] [] path_openat+0xbc/0x4e0
[ 608.368010] [] do_filp_open+0x41/0xa0
[ 608.368010] [] ? _raw_spin_unlock+0x1a/0x40
[ 608.368010] [] ? __alloc_fd+0xe9/0x140
[ 608.368010] [] do_sys_open+0xf4/0x1e0
[ 608.368010] [] ? _raw_spin_lock+0x23/0x30
[ 608.368010] [] sys_open+0x21/0x30
[ 608.368010] [] system_call_fastpath+0x16/0x1b
[ 608.368010] Code: ec 48 83 c4 10 5b 41 5c 5d c3 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 48 83 ec 10 4c 89 65 f8 41 89 f4 48 89 5d f0 8b 47 28 48 81 78 58 d1 1c 00 00 74 0b 48 8b 05 4b 66 cf 00
[ 608.368010] RIP [] devpts_kill_index+0x18/0x70
[ 608.368010] RSP
[ 608.368010] CR2: 0000000000000028
[ 608.394153] ---[ end trace afe83b0fb5fbda93 ]---Reported-by: Ilya Zykov
Signed-off-by: Peter Hurley
Signed-off-by: Greg Kroah-Hartman -
There's no reason kgdb.h itself needs to include the 8250 serial port
header file. So push it down to the _very_ limited number of individual
drivers that need the values in that file, and fix up the places where
people really wanted serial_core.h and platform_device.h.Signed-off-by: Greg Kroah-Hartman
-
It was mistakenly defined to be 24 instead of the next higher number 25.
Reported-by: Alexander Shishkin
Cc: Stephen Hurd
Signed-off-by: Michael Chan
Cc: stable # 3.8
Signed-off-by: Greg Kroah-Hartman -
The "normal" spin lock that guards the N_TTY line discipline read section
is replaced by a raw spin lock.On a PREEMP_RT system this prevents unwanted scheduling overhead when data is
read at the same time as data is being received: while RX IRQ threaded handling
is busy a TTY read call is performed from a RT priority > threaded IRQ priority.
The read call tries to take the read section spin lock (held by the threaded
IRQ) which blocks and causes a context switch to/from the threaded IRQ handler
until the spin lock is unlocked.Signed-off-by: Ivo Sieben
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman -
See https://bugzilla.redhat.com/show_bug.cgi?id=904907
read command causes bash to abort with double free or corruption (out).A simple test-case from Roman:
// Compile the reproducer and send sigchld ti that process.
// EINTR occurs even if SA_RESTART flag is set.void handler(int sig)
{
}main()
{
struct sigaction act;
act.sa_handler = handler;
act.sa_flags = SA_RESTART;
sigaction (SIGCHLD, &act, 0);
struct termio ttp;
ioctl(0, TCGETA, &ttp);
while(1)
{
if (ioctl(0, TCSETAW, ttp) < 0)
{
if (errno == EINTR)
{
fprintf(stderr, "BUG!"); return(1);
}
}
}
}Change set_termios/set_termiox to return -ERESTARTSYS to fix this
particular problem.I didn't dare to change other EINTR's in drivers/tty/, but they look
equally wrong.Reported-by: Roman Rakus
Reported-by: Lingzhu Xiang
Signed-off-by: Oleg Nesterov
Cc: Jiri Slaby
Cc: stable
Signed-off-by: Greg Kroah-Hartman
30 Jan, 2013
5 commits
-
This change fixes a deadlock when the multiplexer is closed while there
are still client side ports open.When the multiplexer is closed and there are active tty's it tries to
close them with tty_vhangup. This has a problem though, because
tty_vhangup needs the tty_lock. This patch changes it to unlock the
tty_lock before attempting the hangup and relocks afterwards. The
additional call to tty_port_tty_set is needed because otherwise the
port stays active because of the reference counter.This change also exposed another problem that other code paths don't
expect that the multiplexer could have been closed. This patch also adds
checks for these cases in the gsmtty_ class of function that could be
called.The documentation explicitly states that "first close all virtual ports
before closing the physical port" but we've found this to not always
reality in our field situations. The GPRS / UTMS modem sometimes crashes
and needs a power cycle in that case which means cleanly shutting down
everything is not always possible. This change makes it much more robust
for our situation where at least the system is recoverable with this patch
and doesn't hang in a deadlock situation inside the kernel.The patch is against the long term support kernel (3.4.27) and should
apply cleanly to more recent branches. Tested with a Telit GE864-QUADV2
and Telit HE910 modem.Signed-off-by: Dirkjan Bussink
Cc: stable
Signed-off-by: Greg Kroah-Hartman -
The MIPS based Ralink WiSoC platform has 1 or more 8250 compatible serial cores.
To make them work we require the same quirks that are used by AU1x00.Signed-off-by: John Crispin
Signed-off-by: Greg Kroah-Hartman -
Dan Carpenter noticed a missing set of parentheses
around a multiple field addition.https://lkml.org/lkml/2013/1/27/166
His original commit message:
There is a kind of precedence problem here, but it doesn't affect how
the code works because ->serial_signals is unsigned char. We want to
clear two flags here.#define SerialSignal_RTS 0x20 /* Request to Send */
#define SerialSignal_DTR 0x80 /* Data Terminal Ready */Without the parenthesis then it does:
info->serial_signals &= 0x5f;
With the parenthesis it does:
info->serial_signals &= 0xffffff5f;
info->serial_signals is an unsigned char so the two statements are
equivalent, but it's cleaner to add the parenthesis. In other dtr_rts()
functions the parenthesis are there so this makes it more consistent.Other changes:
Convert all + uses to | for these bit operations.
Reorder the multiple fields for consistency.
Update the comments too.Reported-by: Dan Carpenter
Signed-off-by: Joe Perches
Signed-off-by: Greg Kroah-Hartman -
Add support for later SUNIX (TIMEDIA) Universal PCI Single and Multi-Port
Communications Boards.These boards have PCI Vendor ID 1fd4 with device ID 1999 but otherwise
appear to be the same as the TIMEDIA boards already supported by 8250_pci
and parport_serial.Tested with:
a. the two port serial board part number SER5037A,
b. the two port serial and one port parallel board part number
MIO5079A.Signed-off-by: Stephen Chivers
Signed-off-by: Greg Kroah-Hartman -
This reverts commit 58f82be334ede87aa6ff6fa1afdb05552be907be.
This was fixed by a previous patch already.
Signed-off-by: Greg Kroah-Hartman
26 Jan, 2013
8 commits
-
This resolves a number of tty driver merge issues found in linux-next
Signed-off-by: Greg Kroah-Hartman
-
Pull btrfs fixes from Chris Mason:
"It turns out that we had two crc bugs when running fsx-linux in a
loop. Many thanks to Josef, Miao Xie, and Dave Sterba for nailing it
all down. Miao also has a new OOM fix in this v2 pull as well.Ilya fixed a regression Liu Bo found in the balance ioctls for pausing
and resuming a running balance across drives.Josef's orphan truncate patch fixes an obscure corruption we'd see
during xfstests.Arne's patches address problems with subvolume quotas. If the user
destroys quota groups incorrectly the FS will refuse to mount.The rest are smaller fixes and plugs for memory leaks."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (30 commits)
Btrfs: fix repeated delalloc work allocation
Btrfs: fix wrong max device number for single profile
Btrfs: fix missed transaction->aborted check
Btrfs: Add ACCESS_ONCE() to transaction->abort accesses
Btrfs: put csums on the right ordered extent
Btrfs: use right range to find checksum for compressed extents
Btrfs: fix panic when recovering tree log
Btrfs: do not allow logged extents to be merged or removed
Btrfs: fix a regression in balance usage filter
Btrfs: prevent qgroup destroy when there are still relations
Btrfs: ignore orphan qgroup relations
Btrfs: reorder locks and sanity checks in btrfs_ioctl_defrag
Btrfs: fix unlock order in btrfs_ioctl_rm_dev
Btrfs: fix unlock order in btrfs_ioctl_resize
Btrfs: fix "mutually exclusive op is running" error code
Btrfs: bring back balance pause/resume logic
btrfs: update timestamps on truncate()
btrfs: fix btrfs_cont_expand() freeing IS_ERR em
Btrfs: fix a bug when llseek for delalloc bytes behind prealloc extents
Btrfs: fix off-by-one in lseek
... -
Fix compilation error, by adding the correct header file
for Tegra clocks.Signed-off-by: Venu Byravarasu
Reviewed-by: Stephen Warren
Signed-off-by: Greg Kroah-Hartman -
1) add clk_enable/disable in serial_pxa_console_write()
2) add clk_prepare() to follow common clock driverSigned-off-by: Yi Zhang
Signed-off-by: Greg Kroah-Hartman -
When PCH_UART_CONSOLE and SERIAL_CORE_CONSOLE is not set neither, the
uart_port will have no 'sysrq' member hence their will need a '#ifdef'
in pch_uart.c to handle the case, otherwise we'll see compile error
like this:CC [M] drivers/tty/serial/pch_uart.o
drivers/tty/serial/pch_uart.c: In function 'pch_uart_hal_read':
drivers/tty/serial/pch_uart.c:572:11: error: 'struct uart_port' has no member named 'sysrq'
make[4]: *** [drivers/tty/serial/pch_uart.o] Error 1Reported-by: Randy Dunlap
CC: Stephen Rothwell
Signed-off-by: Liang Li
Acked-by: Randy Dunlap
Signed-off-by: Greg Kroah-Hartman -
When the tty input buffer is full and thereby throttled,
flushing/resetting the read buffer should unthrottle to allow more
data to be received.Signed-off-by: Karthik Manamcheri
Signed-off-by: Greg Kroah-Hartman -
Sorry forgot to merge this in the original submission. Resync
with the tty tree changes moving the buffers into the tty_portSigned-off-by: Alan Cox
Signed-off-by: Greg Kroah-Hartman
25 Jan, 2013
3 commits
-
Pull cifs fixes from Steve French:
"Two small cifs fixes"* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
fs/cifs/cifs_dfs_ref.c: fix potential memory leakage
cifs: fix srcip_matches() for ipv6 -
Pull kvm fixlet from Marcelo Tosatti.
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: PPC: Emulate dcbf -
Pull ARM fixes from Russell King:
"A number of fixes:Patrik found a problem with preempt counting in the VFP assembly
functions which can cause the preempt count to be upset.Nicolas fixed a problem with the parsing of the DT when it straddles a
1MB boundary.Subhash Jadavani reported a problem with sparsemem and our highmem
support for cache maintanence for DMA areas, and TI found a bug in
their strongly ordered memory mapping type.Also, three fixes by way of Will Deacon's tree from Dave Martin for
instruction compatibility and Marc Zyngier to fix hypervisor boot mode
issues."* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7629/1: mm: Fix missing XN flag for for MT_MEMORY_SO
ARM: DMA: Fix struct page iterator in dma_cache_maint() to work with sparsemem
ARM: 7628/1: head.S: map one extra section for the ATAG/DTB area
ARM: 7627/1: Predicate preempt logic on PREEMP_COUNT not PREEMPT alone
ARM: virt: simplify __hyp_stub_install epilog
ARM: virt: boot secondary CPUs through the right entry point
ARM: virt: Avoid bx instruction for compatibility with <=ARMv4