These cleanups are basically all over the place. The idea is to collect
changes with minimal impact but large number of changes so we can avoid
them from distracting in the diffstat in the other series.
A significant number of lines get removed here, in particular because
the ixp2000 and ixp23xx platforms get removed. These have never been
extremely popular and have fallen into disuse over time with no active
maintainer taking care of them. The u5500 soc never made it into a
product, so we are removing it from the ux500 platform.
Many good cleanups also went into the at91 and omap platforms, as has
been the case for a number of releases.
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull first batch of arm-soc cleanups from Olof Johansson:
"These cleanups are basically all over the place. The idea is to
collect changes with minimal impact but large number of changes so we
can avoid them from distracting in the diffstat in the other series.
A significant number of lines get removed here, in particular because
the ixp2000 and ixp23xx platforms get removed. These have never been
extremely popular and have fallen into disuse over time with no active
maintainer taking care of them. The u5500 soc never made it into a
product, so we are removing it from the ux500 platform.
Many good cleanups also went into the at91 and omap platforms, as has
been the case for a number of releases."
Trivial modify-delete conflicts in arch/arm/mach-{ixp2000,ixp23xx}
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (152 commits)
ARM: clps711x: Cleanup IRQ handling
ARM clps711x: Removed unused header mach/time.h
ARM: clps711x: Added note about support EP731x CPU to Kconfig
ARM: clps711x: Added missing register definitions
ARM: clps711x: Used own subarch directory for store header file
Dove: Fix Section mismatch warnings
ARM: orion5x: ts78xx debugging changes
ARM: orion5x: remove PM dependency from ts78xx
ARM: orion5x: ts78xx fix NAND resource off by one
ARM: orion5x: ts78xx whitespace cleanups
Orion5x: Fix Section mismatch warnings
Orion5x: Fix warning: struct pci_dev declared inside paramter list
ARM: clps711x: Combine header files into one for clps711x-targets
ARM: S3C24XX: Use common macro to define resources on mach-qt2410.c
ARM: S3C24XX: Use common macro to define resources on mach-osiris.c
ARM: EXYNOS: Adapt to cpuidle core time keeping and irq enable
ARM: S5PV210: Use common macro to define resources on mach-smdkv210.c
ARM: S5PV210: Use common macro to define resources on dev-audio.c
ARM: S5PC100: Use common macro to define resources on dev-audio.c
ARM: S5P64X0: Use common macro to define resources on dev-audio.c
...
If kzalloc() returns a NULL here, we pass a NULL to
xencons_disconnect_backend() which will cause an Oops.
Also I removed the __GFP_ZERO while I was at it since kzalloc() implies
__GFP_ZERO.
CC: stable@kernel.org
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Add devicetree and handling for our new clkdev clocks. The patch is rather
straightforward. .of_match_table is set and the 3 irqs are now loaded from the
devicetree.
This series converts the lantiq target to clkdev amongst other things. The
driver needs to handle two clocks now. The fpi bus clock used to derive the
divider and the clock gate needed on some socs to make the secondary port work.
Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Cox <alan@linux.intel.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3809/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
In doing the evt2irq() + muxed vector conversion for various port types
it became apparent that some of the legacy port types will presently
error out due to the irq requesting logic attempting to acquire the
non-existent BRI IRQ. This adds some sanity checks to the request/free
path to ensure that non-existence of a source in itself is not an error.
This should restore functionality for legacy PORT_SCI ports.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The support for CONFIG_MCA is being removed, since the 20
year old hardware simply isn't capable of meeting today's
software demands on CPU and memory resources.
This commit removes the MCA specific 8250 UART code.
Cc: Alan Cox <alan@linux.intel.com>
Cc: linux-serial@vger.kernel.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Simplify serial data width calculation and adapt to bf609 LCR bit mask.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change hardware flow control code to adapt to both bf5xx and bf60x.
Disabled serial device before set termios for bf60x.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Check if xmit buffer pointers are set to zero.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The serial4 controller on bf60x is an enhanced version of serial controller
on bf5xx. MMR size is 32 bits other than 16 bits. MMR GCTL, MCR and LCR are
combined into one control MMR. MSR and LSR are combined into one status MMR.
This patch adapts current bf5xx serial driver to serial4 controller on bf60x.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 642180871b.
Buffer overruns are for hardware reported overruns, not software ones,
which will only happen if we run out of memory and you will get lots of
-ENOMEM errors at the same time.
Thanks to Alan Cox for catching this.
Reported-by: Alan Cox <alan@linux.intel.com>
Cc: Corbin Atkinson <corbinat@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This driver is a module and needs module.h, otherwise it will break when
we remove a bogus usage of module.h from one of the other MIPS headers.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3447/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This driver is a module and needs module.h, otherwise it will break when we
remove a bogus usage of module.h from one of the other MIPS headers.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3446/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
If kzalloc() returns a NULL here, we pass a NULL to
xencons_disconnect_backend() which will cause an Oops.
Also I removed the __GFP_ZERO while I was at it since kzalloc() implies
__GFP_ZERO.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3.4-rc introduced a regression when setting the LEDS. We do the right thing
but then return an error code.
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=43144
Reported-by: Christian Casteyde
Signed-off-by: Alan Cox <alan@linux/intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3.4-rc introduced a regression when setting the LEDS. We do the right thing
but then return an error code.
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=43144
Reported-by: Christian Casteyde
Signed-off-by: Alan Cox <alan@linux/intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is legitimate but because we don't clear the drv->state pointer in the
unregister code causes a bogus BUG().
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42880
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Conflicts:
drivers/mmc/host/sdhci-esdhc-imx.c
drivers/net/ethernet/freescale/fec.c
drivers/spi/spi-imx.c
drivers/tty/serial/imx.c
This resolves dependencies between the pinctrl and clock changes
in imx.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Shawn Guo <shawn.guo@linaro.org> writes:
mxs common clk porting for v3.5. It depends on the following two branches.
[1] git://git.linaro.org/people/mturquette/linux.git clk-next
[2] http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-arm.git clkdev
As the mxs device tree conversion will constantly touch clock files,
to save the conflicts, the updated mxs/dt branch coming later will
based on this pull-request.
* 'clk/mxs' of git://git.linaro.org/people/shawnguo/linux-2.6:
ARM: mxs: remove now unused timer_clk argument from mxs_timer_init
ARM: mxs: remove old clock support
ARM: mxs: switch to common clk framework
ARM: mxs: change the lookup name for fec phy clock
ARM: mxs: request clock for timer
clk: mxs: add clock support for imx28
clk: mxs: add clock support for imx23
clk: mxs: add mxs specific clocks
Includes an update to Linux 3.4-rc6
Conflicts:
drivers/clk/Makefile
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
A single patch from Alexander Shiyan <shc_work@mail.ru>:
* clps711x/cleanup:
ARM: clps711x: Using a single definition for the PHYS and VIRT registers offset
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Using a single definition for the physical and virtual address register for all
variants boards clps711x. This patch also includes the use of a single function
clps_read/write in some units.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The global wait_queue that is used for line discipline idle handling is
moved to a separate wait_queue for each line instance. This prevents
unnecessary blocking on one line, because of idle handling on another
line.
Signed-off-by: Ivo Sieben <meltedpianoman@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update the 8250_em driver to support DT.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update the 8250_em driver to correctly handle the case
where no clock is associated with the device.
The return value of clk_get() needs to be checked with
IS_ERR() to avoid NULL pointer referencing.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, serial drivers don't report buffer overruns. When a buffer overrun
occurs, tty_insert_flip_char returns 0, and no attempt is made to insert that
same character again (i.e. it is lost). This patch reports buffer overruns via
the buf_overrun field in the port's icount structure.
Signed-off-by: Corbin Atkinson <corbin.atkinson@ni.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In theory we don't need it, in practice we are hitting some ill understood
deadlock when we don't drop it. The old code dropped it here so we are not
undoing anything problematic for pty. If pty could be unloaded it would be
a problem but it can't.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The PC BIOS does provide a NUMLOCK flag containing the desired state
of this LED. This patch sets the current state according to the data
in the bios.
[ hpa: fixed __weak declaration without definition, changed "inline"
to "static inline" ]
Signed-Off-By: Joshua Cov <joshuacov@googlemail.com>
Link: http://lkml.kernel.org/r/CAKL7Q7rvq87TNS1T_Km8fW_5OzS%2BSbYazLXKxW-6ztOxo3zorg@mail.gmail.com
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Commit d29f3ef39b
"tty_lock: Localise the lock"
added a tty arg to wait_event_interruptible_tty() but it missed
this arch specific instance for cris, causing a compile failure.
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d29f3ef39b ("tty_lock: Localise the lock")
missed that d3a7b83f86 ("drivers/tty/amiserial.c:
add missing tty_unlock") just added a new caller of tty_unlock():
drivers/tty/amiserial.c: In function ‘set_serial_info’:
drivers/tty/amiserial.c:1077: error: too few arguments to function ‘tty_unlock’
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In each remaining case the tty_lock is associated with a specific tty. This
means we can now lock on a per tty basis. We do need tty_lock_pair() for
the pty case. Uglier but still a step in the right direction.
[fixed up calls in 3 missing drivers - gregkh]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is a private pty affair, we don't want to tangle it with the tty_lock
any more as we know all the other non tty locking is now handled by the vfs
so we too can move.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
get_current_tty has its own consistent locking. That means a pile of the
tty lock cases are not needed. As get_current_tty also keeps a reference the
tty object lifetime means we can propogate the lock removal out.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is V2 of the Emma Mobile 8250 platform driver.
The hardware itself has according to the data sheet
up to 64 byte FIFOs but at this point we only make
use of the 16550 compatible mode.
To support this piece of hardware the common UART
registers need to be remapped, and the access size
differences need to be handled.
The DLL and DLM registers can due to offset collision
not be remapped easily, and because of that this
driver makes use of ->dl_read() and ->dl_write()
callbacks. This in turn requires a registration
function that takes 8250-specific paramenters.
Future potential enhancements include DT support,
early platform driver console and fine grained PM.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Alan Cox <alan@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The variable 'mxser_port_ops' is only referenced in this file and
should be marked static to prevent it from being exposed globally.
Quites the sparse warning:
warning: symbol 'mxser_port_ops' was not declared. Should it be static?
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce yet another 8250 registration function.
This time it is serial8250_register_8250_port() and it
allows us to register 8250 hardware instances using struct
uart_8250_port. The new function makes it possible to
register 8250 hardware that makes use of 8250 specific
callbacks such as ->dl_read() and ->dl_write().
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Get rid of unused functions and macros now when
Alchemy and RM9K are converted over to callbacks.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert the 8250 RM9K support code to make
use of the new dl_read()/dl_write() callbacks.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert the 8250 Alchemy support code to make
use of the new dl_read()/dl_write() callbacks.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert serial_dl_read() and serial_dl_write() from macro
to 8250 specific callbacks. This change makes it easier to
support 8250 hardware with non-standard DLL and DLM register
configurations such as Alchemy, RM9K and upcoming Emma Mobile
UART hardware.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is a deadlock bugfix that was easy to hit, and that the vt layer lock
rework got wrong, so it reverts the logic back to the way it was in 3.3 and
earlier kernels to prevent problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull a TTY fix from Greg Kroah-Hartman:
"This is a deadlock bugfix that was easy to hit, and that the vt layer
lock rework got wrong, so it reverts the logic back to the way it was
in 3.3 and earlier kernels to prevent problems."
* tag 'tty-3.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
vt: Fix deadlock on scroll-lock
Fixing the locking accidentally replaced a race in the scroll
lock handling with a deadlock. Turn it back into a race for
now.
The basic problem is that there are two paths into the tty
stop/start helpers. One via the tty layer ^S/^Q handling
where we need to take the kbd_event_lock and one via the
special keyboard handler for fn_hold where we already hold
it. Probably we need to split out into a separate LED lock
but for now just go back to the race as it's a bit close
to release.
Reported-by: Clemens Ladisch <clemens@ladisch.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We noticed that we were loosing data at speed less than 2400 baud.
It turned out our (TI16750 compatible) uart with 64 byte outgoing fifo
was truncated to 16 byte (bit 5 sets fifo len) when modifying the fcr
reg.
The input code still fills the buffer with 64 bytes if I remember
correctly and thus data is lost.
Our fix was to remove whiping of the fcr content and just add the
TRIGGER_1 which we want for latency.
I can't see why this would not work on less than 2400 always, for all
uarts ...
Otherwise one would have to make sure the filling of the fifo re-checks
the current state of available fifo size (urrk).
Signed-off-by: Christian Melki <christian.melki@ericsson.se>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The rules used to make 8250_pci "ignore" the PCH uarts are lacking pci subids
entries, preventing it to match and thus is breaking serial port support for
theses systems.
This has been tested on a nanoETXexpress-TT, which has a specifici uart clock.
Tested-by: Erwan Velu <Erwan.Velu@zodiacaerospace.com>
[stable@: please apply to 3.0-stable, 3.2-stable and 3.3-stable]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Arnaud Patard <apatard@hupstream.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
copy_from_read_buf currently copies data to a user buffer and then
checks if the data is single EOF. But it checks it by accessing the
user buffer. First, the buffer may be changed by other threads of the
user program already. Second, it accesses the buffer without any
checks. It might be write-only for example.
Fix this by inspecting contents of the tty (kernel) buffer instead.
Note that "n == 1" is necessary, but not sufficient. But we check
later that there is nothing left by "!tty->read_cnt" condition.
There is still an issue with the current code that EOF being wrapped
to the start of the circular buffer will result in an inappropriate
losing of the EOF character. But this is not intended to be fixed by
this patch.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: Emil Goode <emilgoode@gmail.com>
Cc: Howard Chu <hyc@symas.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
