disable_irq() cannot be called from interrupt context without self imposed deadlock. This was happening in ks8695uart_stop_tx().
Signed-off-by: NDick Hollenbeck <dick@softplc.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Add suspend/resume functions to the AMBA pl011 serial driver.
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Serial driver of S5PC100 is the same as S3C6400, so S5PC100 shares the serial
driver with S3C6400. Uart driver is copied from plat-s3c64xx to plat-s5pc1xx,
as I do not use plat-s3c64xx directory.
Signed-off-by: NByungho Min <bhmin@samsung.com>
[ben-linux@fluff.org: title fixup]
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The typo causes drivers/serial/s3c6400.c not being built for s3c6400 platform.
Signed-off-by: NRamax Lo <ramaxlo@gmail.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Stop referencing CLOCK_TICK_RATE in the KS8695 drivers, rather refer
to a KS8695_CLOCK_RATE.
Issue pointed out by Russell King on arm-linux-kernel mailing list.
Signed-off-by: NAndrew Victor <linux@maxim.org.za>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Rename the structure to avoid the following warning:

WARNING: vmlinux.o(.data+0x11ef4): Section mismatch in reference from the variable
s3c6400_serial_drv to the function .devexit.text:s3c24xx_serial_remove()
The variable s3c6400_serial_drv references
the function __devexit s3c24xx_serial_remove()
If the reference is valid then annotate the
variable with __exit* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
Signed-off-by: NRamax Lo <ramaxlo@gmail.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

During kernel build process, the following warning was found:

WARNING: drivers/serial/built-in.o(.data+0x304): Section mismatch in reference from
the variable s3c2440_serial_drv to the function .devexit.text:s3c24xx_serial_remove()
The variable s3c2440_serial_drv references the function __devexit s3c24xx_serial_remove()
If the reference is valid then annotate the variable with
__exit* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,

The same warning happened for s3c241x platform. We rename variables to avoid
these warnings. These changes also apply to s3c2400 & s3c24a0 for consistency.
Signed-off-by: NRamax Lo <ramaxlo@gmail.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

This is another alloc_bootmem() -> kzalloc() change, this time to
fix the non-fatal badness caused when booting with a cpm2_uart console.
Signed-off-by: NMark Ware <mware@elphinstone.net>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

drivers/serial/atmel_serial.c: fix compile when CONFIG_SERIAL_ATMEL=Y and CONFIG_SERIAL_ATMEL_CONSOLE=N

When SERIAL_ATMEL_CONSOLE is disabled, ATMEL_CONSOLE_DEVICE is set to
NULL, and trying to access ATMEL_CONSOLE_DEVICE->flags in
atmel_serial_probe makes the compile fail.  This fixes the issue by only
accessing it if CONFIG_SERIAL_ATMEL_CONSOLE is defined
Signed-off-by: NAlbin Tonnerre <albin.tonnerre@free-electrons.com>
Signed-off-by: NHaavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

dcb314@hotmail.com notes that this memset has its args reversed.

It's unneeded anyway, so remove it.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13587Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

msm_serial_driver is registered using platform_driver_probe which takes
care for the probe function itself.  So don't pass it in the driver
struct, too.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Commit 5fd29d6c ("printk: clean up
handling of log-levels and newlines") changed printk semantics.  printk
lines with multiple KERN_<level> prefixes are no longer emitted as
before the patch.

<level> is now included in the output on each additional use.

Remove all uses of multiple KERN_<level>s in formats.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix up the error bit handling on SCI ports.
Signed-off-by: NSUGIOKA Toshinobu <sugioka@itonet.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch updates the receive error code for muxed
interrupts in the sh-sci driver.

Receive error interrupts may be generated by the hardware
if RE or REIE bits in SCSCR are set. Update the muxed
interrupt handling code to acknowledge error interrupts
if RE or REIE is set, instead of only acknowledging if
REIE is set.

Without this patch error interrupts may be generated but
never acked resulting in a "nobody cared" crash.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Add support for the PCI-Express NetMos 9901 Multi-IO card.

0001:06:00.0 Serial controller [0700]: NetMos Technology Device [9710:9901] (prog-if 02 [16550])
        Subsystem: Device [a000:1000]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 65
        Region 0: I/O ports at 0030 [size=8]
        Region 1: Memory at 80105000 (32-bit, non-prefetchable) [size=4K]
        Region 4: Memory at 80104000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>
        Kernel driver in use: serial
        Kernel modules: 8250_pci

0001:06:00.1 Serial controller [0700]: NetMos Technology Device [9710:9901] (prog-if 02 [16550])
        Subsystem: Device [a000:1000]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin B routed to IRQ 65
        Region 0: I/O ports at 0020 [size=8]
        Region 1: Memory at 80103000 (32-bit, non-prefetchable) [size=4K]
        Region 4: Memory at 80102000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>
        Kernel driver in use: serial
        Kernel modules: 8250_pci

0001:06:00.2 Parallel controller [0701]: NetMos Technology Device [9710:9901] (prog-if 03 [IEEE1284])
        Subsystem: Device [a000:2000]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin C routed to IRQ 65
        Region 0: I/O ports at 0010 [size=8]
        Region 1: I/O ports at <unassigned>
        Region 2: Memory at 80101000 (32-bit, non-prefetchable) [size=4K]
        Region 4: Memory at 80100000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>
        Kernel driver in use: parport_pc
        Kernel modules: parport_pc

[   16.760181] PCI parallel port detected: 416c:0100, I/O at 0x812010(0x0), IRQ 65
[   16.760225] parport0: PC-style at 0x812010, irq 65 [PCSPP,TRISTATE,EPP]
[   16.851842] serial 0001:06:00.0: enabling device (0004 -> 0007)
[   16.883776] 0001:06:00.0: ttyS0 at I/O 0x812030 (irq = 65) is a ST16650V2
[   16.893832] serial 0001:06:00.1: enabling device (0004 -> 0007)
[   16.926537] 0001:06:00.1: ttyS1 at I/O 0x812020 (irq = 65) is a ST16650V2
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use the newly introduced pci_ioremap_bar() function in drivers/serial.
pci_ioremap_bar() just takes a pci device and a bar number, with the goal
of making it really hard to get wrong, while also having a central place
to stick sanity checks.
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Remove unneeded casts.
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Implement the serial polling hooks for the serial_txx9 uart for use with
kgdboc.

This patch once got SOB from Jason on Jul 2008 and (perhaps) merged into
kgdb-next branch, but lost somewhere then.  I resend it now with Jason's
Acked-by.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: NJason Wessel <jason.wessel@windriver.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The tty layer is now a bit more fussy about reporting the right baud rate
back. Make the msm driver match the current state of affairs.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NBrian Swetland <swetland@google.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Hardware updated to support TX FIFO empty.
Signed-off-by: NRichard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Mark the remove function as __devexit so it gets eliminated in
CONFIG_HOTPLUG=n builds.  Saves ~100 bytes.
Signed-off-by: NPeter Korsgaard <jacmet@sunsite.dk>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

In zs_console_putchar() occurs:

	if (zs_transmit_drain(zport, irq))
		write_zsdata(zport, ch);

However if in zs_transmit_drain() no empty Tx Buffer occurs, limit reaches
-1 => true, and the write still occurs.

This patch changes postfix to prefix decrements in this and similar
functions to prevent similar mistakes in the future.  This decreases the
iterations with one but the chosen loop count was arbitrary anyway.

In sunhv limit reaches -1, not 0, so the test is off by one.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Acked-by: NMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Since early printk only makes sense/works when the serial driver is built
into the kernel, disable the option for this driver when it is going to be
built as a module.  Otherwise we get build failures due to the ifdef
handling.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The Blackfin serial driver never initialized the spin_lock that is part of
the serial core structure, but we never noticed because spin_lock's are
rarely enabled on UP systems.  Yeah lockdep and friends.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

So far, MPC512x used mpc512x_find_ips_freq() to get the bus frequency,
while MPC52xx used mpc52xx_find_ipb_freq().  Despite the different
clock names (IPS vs. IPB) the code was identical.

Use common code for both processor families.
Signed-off-by: NWolfgang Denk <wd@denx.de>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

After enabling hardware flow control, any subsequent termios call may hang
waiting for the transmitter to drain.  This appears to be caused by a
busy-loop in set_termios() waiting for the transmitter to become empty,
which may take a very long time (or hang indefinitely) if the device at
the other end is blocking us.

A quick look through the tty and serial_core code indicates that any
necessary flushing (which is optional) has already been done at this
point, so there's no need for the driver to flush the transmitter on its
own.

Fix it by removing the busy-loop altogether.
Tested-by: NEirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: NHaavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NStephen Rothwell <sfr@canb.auug.org.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Matthias Fuchs <mfuchs@ma-fu.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch adds the UPF_FIXED_TYPE flag which will bypass the
8250's autoconfig probe for uart type. The uart type identified
by the of_serial's parse of the flat device tree will be utilized
as defined.
Signed-off-by: NDave Mitchell <dmitchell@amcc.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

In HW UART mode the TxBD[READY] is not cleared by H/W (RISC engine) when
the user send characters to Tx buffer of QE UART.  So, these characters
stay on the QE forever, never go to UART line.
Signed-off-by: NDave Liu <daveliu@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

Presently the boot log whines about suspend/resume hooks at the platform
driver level, move these over to dev_pm_ops.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

.ko is normally not included in Kconfig help, make it consistent.
Signed-off-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

real baud rate may be different from the one requested.
for upper layers, set the nearest value to the real rate
in favour of the rate previously requested.
Signed-off-by: NOskar Schirmer <os@emlix.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Using the iMX serial driver with an IrDA device
needs extra peripheral settings and specific
timing depending on the transmitter circuitry used.
Signed-off-by: NFabian Godehardt <fg@emlix.com>
Signed-off-by: NOskar Schirmer <os@emlix.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

for calculation of numerator and denominator
used in baud rate setting, use generic library function
for optimum settings.
Signed-off-by: NOskar Schirmer <os@emlix.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

correctly de-initialise device when setting up failed,
call to pdata->exit() was missing.
Signed-off-by: NDaniel Glöckner <dg@emlix.com>
Signed-off-by: NOskar Schirmer <os@emlix.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

needed to avoid continued transmission by hardware
while software already shuts down, which might
cause dangling characters to show up in hardware
queues when restarting the device.
Signed-off-by: NFabian Godehardt <fg@emlix.com>
Signed-off-by: NOskar Schirmer <os@emlix.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>