提交 · a93f66dc5ff51a8f88f13e4a4b8e3e51ed89c0a5 · openeuler / Kernel

27 7月, 2013 4 次提交

serial: arc_uart: Fix module alias · d5a12ea7

由 Axel Lin 提交于 7月 21, 2013

Platform drivers use "platform:" prefix in module alias.
Also use DRIVER_NAME in MODULE_ALIAS to make module autoloading work.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Acked-by: NVineet Gupta <vgupta@synopsys.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

d5a12ea7

tty_port: Fix refcounting leak in tty_port_tty_hangup() · 1d9e689c

由 Gianluca Anzolin 提交于 7月 25, 2013

The function tty_port_tty_hangup() could leak a reference to the tty_struct:

        struct tty_struct *tty = tty_port_tty_get(port);

        if (tty && (!check_clocal || !C_CLOCAL(tty))) {
                tty_hangup(tty);
                tty_kref_put(tty);
        }

If tty != NULL and the second condition is false we never call tty_kref_put and
the reference is leaked.

Fix by always calling tty_kref_put() which accepts a NULL argument.

The patch fixes a regression introduced by commit aa27a094.
Acked-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NGianluca Anzolin <gianluca@sottospazio.it>
Acked-by: NJiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org> # 3.10
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

1d9e689c

serial/mxs-auart: increase time to wait for transmitter to become idle · 079a036f

由 Uwe Kleine-König 提交于 6月 28, 2013

Without this patch the driver waits ~1 ms for the UART to become idle. At
115200n8 this time is (theoretically) enough to transfer 11.5 characters
(= 115200 bits/s / (10 Bits/char) * 1ms). As the mxs-auart has a fifo size
of 16 characters the clock is gated too early. The problem is worse for
lower baud rates.

This only happens to really shut down the transmitter in the middle of a
transfer if /dev/ttyAPPx isn't opened in userspace (e.g. by a getty) but
was at least once (because the bootloader doesn't disable the transmitter).

So increase the timeout to 20 ms which should be enough for 9600n8, too.
Moreover skip gating the clock if the timeout is elapsed.

Cc: stable@vger.kernel.org # v2.6.39+
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

079a036f

serial/mxs-auart: fix race condition in interrupt handler · d970d7fe

由 Uwe Kleine-König 提交于 7月 04, 2013

The handler needs to ack the pending events before actually handling them.
Otherwise a new event might come in after it it considered non-pending or
handled and is acked then without being handled. So this event is only
noticed when the next interrupt happens.

Without this patch an i.MX28 based machine running an rt-patched kernel
regularly hangs during boot.

Cc: stable@vger.kernel.org # v2.6.39+
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

d970d7fe

25 7月, 2013 3 次提交

serial: tegra: correct help message in Kconfig from 'ttyHS' to 'ttyTHS' · 3bf5d350

由 Richard Zhao 提交于 7月 21, 2013

ttyTHS is consistent with the name used in driver.
Signed-off-by: NRichard Zhao <rizhao@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

3bf5d350

tty/8250_early: Don't truncate last character of options · 258a9fd1

由 Henrik Nordström 提交于 7月 23, 2013

The earlier change to use strlcpy uncovered a bug in the options
argument length calculation causing last character to be truncated.
This makes the actual console to be configured with incorrect
baudrate when specifying the console using console=uart,... syntax.

Bug symptom seen in kernel log output:

Kernel command line: console=uart,mmio,0x90000000,115200
Early serial console at MMIO 0x90000000 (options '11520')

which then results in a invalid baud rate 11520 instead of the
expected 115200 when the console is switched to ttyS0 later
in the boot process.
Signed-off-by: NHenrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

258a9fd1

TTY: snyclinkmp: calculating wrong addresses · 2652c216

由 Dan Carpenter 提交于 7月 19, 2013

This is a static checker fix and I don't have a way to test it. But
from the context it looks like this is a typo where SCABUFSIZE was
intended instead of sizeof(SCABUFSIZE). SCABUFSIZE is 1024 and
sizeof(int) is 4. I would suspect this is a bad bug.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

2652c216

01 7月, 2013 2 次提交

tty/8250_dw: Add support for OCTEON UARTS. · d5f1af7e

由 David Daney 提交于 6月 19, 2013

A few differences needed by OCTEON:

o These are DWC UARTS, but have USR at a different offset.

o Internal SoC buses require reading back from registers to maintain
  write ordering.

o 8250 on OCTEON appears with 64-bit wide registers, so when using
  readb/writeb in big endian mode we have to adjust the membase to hit
  the proper part of the register.

o No UCV register, so we hard code some properties.

Because OCTEON doesn't have a UCV register, I change where
dw8250_setup_port(), which reads the UCV, is called by pushing it in
to the OF and ACPI probe functions, and move unchanged
dw8250_setup_port() earlier in the file.
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: linux-mips@linux-mips.org
Cc: Jamie Iles <jamie@jamieiles.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5516/Acked-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

d5f1af7e

Revert "serial: 8250_pci: add support for another kind of NetMos Technology... · 828c6a10

由 Greg Kroah-Hartman 提交于 6月 30, 2013

Revert "serial: 8250_pci: add support for another kind of NetMos Technology PCI 9835 Multi-I/O Controller"

This reverts commit 8d2f8cd4.

As reported by Stefan, this device already works with the parport_serial
driver, so the 8250_pci driver should not also try to grab it as well.
Reported-by: NStefan Seyfried <stefan.seyfried@googlemail.com>
Cc: Wang YanQing <udknight@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

828c6a10

29 6月, 2013 1 次提交
- A
  vc: switch to fixed_size_llseek() · 65004276
  由 Al Viro 提交于 6月 17, 2013
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
  65004276
26 6月, 2013 2 次提交

serial: sh-sci: Initialise variables before access in sci_set_termios() · d4759ded

由 Simon Horman 提交于 6月 20, 2013

This change addresses two warnings that are flagged by gcc relating to
potential access to the ssr and cks variables while they are uninitialised.

I have addressed this by initialising the values to
the defaults present in sci_baud_calc_hscif().

It is my analysis that cks is always initialised if used
but that without this change ssr may be accessed while uninitialised.

The code altered by this patch was introduced by commit
f303b364 ("serial: sh-sci: HSCIF support").
Reported-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

d4759ded

pch_uart: Add uart_clk selection for the MinnowBoard · 29692d05

由 Darren Hart 提交于 6月 25, 2013

Use DMI_BOARD_NAME to determine if we are running on a MinnowBoard and
set the uart clock to 50MHz if so. This removes the need to pass the
user_uartclk to the kernel at boot time.
Signed-off-by: NDarren Hart <dvhart@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Waskiewicz <peter.p.waskiewicz.jr@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

29692d05

25 6月, 2013 3 次提交

tty: atmel_serial: prepare clk before calling enable · 91f8c2d8

由 Boris BREZILLON 提交于 6月 19, 2013

Replace clk_enable/disable with clk_prepare_enable/disable_unprepare to
avoid common clk framework warnings.
Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

91f8c2d8

msm_serial: Use devm_clk_get() and properly return errors · 519b371d

由 Stephen Boyd 提交于 6月 17, 2013

Clocks are not clk_put() in this driver's error paths during
probe. The code that checks for clock errors also fails to
properly return the error code from the pclk member if it turns
out to be the failing clock, leading to potentially confusing
error values if the clk member is not an error pointer. Fix these
problems with devm_clk_get() and proper error checking.

Removing the clk_put() in msm_serial_remove() also points out
that msm_port is unused. Furthermore, msm_port is the wrong type
and so the clk_put() would be using the wrong pointer. Replace it
with the proper type and call uart_remove_one_port() to do the
proper cleanup.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>

519b371d

msm_serial: Convert to clk_prepare/unprepare · f98cf83d

由 Stephen Boyd 提交于 6月 17, 2013

Add calls to clk_prepare and unprepare so that MSM can migrate to
the common clock framework.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>

f98cf83d

20 6月, 2013 1 次提交

ARM: sirf: use CONFIG_SIRF rather than CONFIG_PRIMA2 where necessary · c5dece37

由 Arnd Bergmann 提交于 6月 10, 2013

I got a build error today that made me realize that it is not
possible to build a kernel for a SiRF platform without enabling
CONFIG_PRIMA2, since a lot of common code depends on CONFIG_PRIMA2.

This fixes all occurences that appear like common SiRF code.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NWolfram Sang <wsa@the-dreams.de>
Acked-by: NMark Brown <broonie@linaro.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NBarry Song <Baohua.Song@csr.com>
Acked-by: NMike Turquette <mturquette@linaro.org>

c5dece37

19 6月, 2013 2 次提交

serial: samsung: select EXYNOS specific driver data if ARCH_EXYNOS is defined · 33f88136

由 Chander Kashyap 提交于 6月 19, 2013

All EXYNOS4/5 SoCs share a common driver data in the samsung serial
driver. Hence, let the driver data inclusion be based on ARCH_EXYNOS
instead of SOC specific definition.
Signed-off-by: NChander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Reviewed by: Girish K S <ks.giri@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

33f88136

parisc: fix serial ports on C8000 workstation · 9a66d186

由 Thomas Bogendoerfer 提交于 6月 09, 2013

The C8000 workstation (64 bit kernel only) has a somewhat different
serial port configuration than other models.
Thomas Bogendoerfer sent a patch to fix this in September 2010, which
was now minimally modified by me.
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: NHelge Deller <deller@gmx.de>

9a66d186

18 6月, 2013 11 次提交

tty: Reset itty for other pty · 64e377dc