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2011-08-25Revert "tty: of_serial: add support for the DesignWare 8250"Greg Kroah-Hartman1-7/+0
This reverts commit 14a8d47d4e9f51372996914c16bdbf1c34e209b5. It causes a build error that needs to be resolved differently. Cc: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23tty: of_serial: add support for the DesignWare 8250Jamie Iles1-0/+7
Support the DesignWare 8250 by a new compatible string and registering the DesignWare helpers. If the registration of the helpers fails, then continue as a normal 8250 as we may still get some useful debug out. 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>
2011-08-23tty: serial8250: add helpers for the DesignWare 8250Jamie Iles3-0/+107
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 function serial8250_use_designware_io() that configures a uart_port with these accessors. Cc: Alan Cox <alan@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23tty: serial8250: remove UPIO_DWAPB{,32}Jamie Iles2-72/+0
Now that platforms can override the port IRQ handler and the only user of these UPIO modes has been converted over, kill off UPIO_DWAPB and UPIO_DWAPB32. Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23tty: serial8250: allow platforms to override irq handlerJamie Iles1-4/+35
Some ports (e.g. Synopsys DesignWare 8250) have special requirements for handling the interrupts. Allow these platforms to specify their own interrupt handler that will override the default. serial8250_handle_irq() is provided so that platforms can extend the IRQ handler rather than completely replacing it. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23serial: samsung: Add unified interrupt handler for s3c64xx and later SoC'sThomas Abraham2-12/+96
s3c64xx and later SoC's include the interrupt mask and pending registers in the uart controller, unlike the s3c24xx SoC's which have these registers in the interrupt controller. When the mask and pending registers are part of the uart controller, a unified interrupt handler can handle the tx/rx interrupt. With this, the static reservation of interrupt numbers for the uart tx/rx/err interrupts in the linux irq space is not required and simplifies adding device tree support. Suggested-by: Grant Likely <grant.likely@secretlab.ca> CC: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23serial:bfin_uart: Put TX IRQ in individual platform resource.Sonic Zhang1-14/+22
Serial TX IRQ is not RX IRQ plus 1 in some blackfin chips. Give individual platform resources to both TX and RX irqs. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23serial:blackfin: rename Blackfin serial driver to bfin_uart.cSonic Zhang3-2/+2
bfin_5xx.c is not a general name for all Blackfin chips. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23serial:blackfin: Correct coding style in bfin serial driver.Sonic Zhang1-9/+16
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23TTY: remove tty_lockedJiri Slaby1-4/+0
We used it really only serial and ami_serial. The rest of the callsites were BUG/WARN_ONs to check if BTM is held. Now that we pruned tty_locked from both of the real users, we can get rid of tty_lock along with __big_tty_mutex_owner. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23TTY: serial, remove tasklet for tty_wakeupJiri Slaby1-19/+1
tty_wakeup can be called from any context. So there is no need to have an extra tasklet for calling that. Hence save some space and remove the tasklet completely. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23TTY: msm_serial, remove unneeded console setJiri Slaby1-2/+0
It doesn't make sense to set console to uart_port in console->setup. At that time the console is set by uart_add_one_port already. The call chain looked like: uart_add_one_port() uport->cons = drv->cons; <= once uart_configure_port() register_console() console->setup() port->cons = co; <= second time Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23TTY: serial, remove BTM from wait_until_sentJiri Slaby1-23/+7
During the BKL removal process, the BKL was switched to tty_lock (BTM). Now we should start pruning the BTM further. Let's start with wait_until_sent of the serial layer. This will allow us to switch to the tty port helpers and thus clean it up much. In wait_until_sent there are some uport members accessed, but neither of them is protected by BTM at the location they are set ('=>' means function call): * uport->fifosize (set in tty_ioctl => uart_ioctl => uart_set_info) * uport->type (set in add_one_port prior to tty_register_device) * uport->timeout (set usually in tty_ioctl => tty_mode_ioctl => tty_set_termios => uart_set_termios => uart_change_speed => uport->ops->set_termios => uart_update_timeout) * call to uport->ops->tx_empty() If the tx_empty hook needs some lock to protect accesses to registers, it should take &uport->lock spinlock like 8250 does. Otherwise there still might be races e.g. with ISRs. This should also fix the issue Andreas is seeing (BTM in comparison to BKL doesn't have any hidden functionality like unlocking during sleeping). Signed-off-by: Jiri Slaby <jslaby@suse.cz> References: https://lkml.org/lkml/2011/5/25/562 Cc: Alan Cox <alan@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Andreas Bombe <aeb@debian.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-08sh: Fix boot crash related to SCIRafael J. Wysocki1-1/+1
Commit d006199e72a9 ("serial: sh-sci: Regtype probing doesn't need to be fatal.") made sci_init_single() return when sci_probe_regmap() succeeds, although it should return when sci_probe_regmap() fails. This causes systems using the serial sh-sci driver to crash during boot. Fix the problem by using the right return condition. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-04dt: remove of_alias_get_id() referenceGrant Likely1-9/+4
of_alias_get_id() is broken and being reverted. Remove the reference to it and replace with a single incrementing id number. There is no risk of regression here on the imx driver since the imx change to use of_alias_get_id() is commit 22698aa2, "serial/imx: add device tree probe support" which is new for v3.1, and it won't get used unless CONFIG_OF is enabled and the board is booted using a device tree. A single incrementing integer is sufficient for now. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2011-08-01Merge branch 'sh-latest' of ↵Linus Torvalds3-727/+466
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x * 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x: (39 commits) SH: static should be at beginning of declaration sh: move CLKDEV_xxx_ID macro to sh_clk.h sh: clock-shx3: add CLKDEV_ICK_ID for cleanup sh: clock-sh7786: add CLKDEV_ICK_ID for cleanup sh: clock-sh7785: add CLKDEV_ICK_ID for cleanup sh: clock-sh7757: add CLKDEV_ICK_ID for cleanup sh: clock-sh7366: add CLKDEV_ICK_ID for cleanup sh: clock-sh7343: add CLKDEV_ICK_ID for cleanup sh: clock-sh7722: add CLKDEV_ICK_ID for cleanup sh: clock-sh7724: add CLKDEV_ICK_ID for cleanup sh: clock-sh7366: modify I2C clock settings sh: clock-sh7343: modify I2C clock settings sh: clock-sh7723: modify I2C clock settings sh: clock-sh7722: modify I2C clock settings sh: clock-sh7724: modify I2C clock settings serial: sh-sci: Fix up pretty name printing for port IRQs. serial: sh-sci: Kill off per-port enable/disable callbacks. serial: sh-sci: Add missing module description/author bits. serial: sh-sci: Regtype probing doesn't need to be fatal. sh: Tidy up pre-clkdev clk_get() error handling. ...
2011-07-27serial/imx: add device tree probe supportShawn Guo1-11/+72
It adds device tree probe support for imx tty/serial driver. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Jason Liu <jason.hui@linaro.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Alan Cox <alan@linux.intel.com> Cc: Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-27serial/imx: get rid of the uses of cpu_is_mx1()Shawn Guo1-16/+69
The patch removes all the uses of cpu_is_mx1(). Instead, it uses the .id_table of platform_driver to distinguish the uart device type, IMX1_UART and IMX21_UART. The IMX21_UART type runs on all i.mx except i.mx1. A couple of !cpu_is_mx1 logic gets turned into is_imx21_uart, as the codes wrapped there are really IMX21 type uart specific. It also removes macro MX1_UCR3_REF25 and MX1_UCR3_REF30 which are not used anywhere. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Alan Cox <alan@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-27atomic: use <linux/atomic.h>Arun Sharma3-3/+3
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26Merge branch 'tty-next' of ↵Linus Torvalds6-20/+211
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 * 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (26 commits) amba pl011: workaround for uart registers lockup n_gsm: fix the wrong FCS handling pch_uart: add missing comment about OKI ML7223 pch_uart: Add MSI support tty: fix "IRQ45: nobody cared" PTI feature to allow user to name and mark masterchannel request. 0 for o PTI Makefile bug. tty: serial: samsung.c remove legacy PM code. SERIAL: SC26xx: Fix link error. serial: mrst_max3110: initialize waitqueue earlier mrst_max3110: Change max missing message priority. tty: s5pv210: Add delay loop on fifo reset function for UART tty/serial: Fix XSCALE serial ports, e.g. ce4100 serial: bfin_5xx: fix off-by-one with resource size drivers/tty: use printk_ratelimited() instead of printk_ratelimit() tty: n_gsm: Added refcount usage to gsm_mux and gsm_dlci structs tty: n_gsm: Add raw-ip support tty: n_gsm: expose gsmtty device nodes at ldisc open time pch_phub: Fix register miss-setting issue serial: 8250, increase PASS_LIMIT ...
2011-07-26Merge branch 'for-linus' of ↵Linus Torvalds8-15/+12
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) fs: Merge split strings treewide: fix potentially dangerous trailing ';' in #defined values/expressions uwb: Fix misspelling of neighbourhood in comment net, netfilter: Remove redundant goto in ebt_ulog_packet trivial: don't touch files that are removed in the staging tree lib/vsprintf: replace link to Draft by final RFC number doc: Kconfig: `to be' -> `be' doc: Kconfig: Typo: square -> squared doc: Konfig: Documentation/power/{pm => apm-acpi}.txt drivers/net: static should be at beginning of declaration drivers/media: static should be at beginning of declaration drivers/i2c: static should be at beginning of declaration XTENSA: static should be at beginning of declaration SH: static should be at beginning of declaration MIPS: static should be at beginning of declaration ARM: static should be at beginning of declaration rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check Update my e-mail address PCIe ASPM: forcedly -> forcibly gma500: push through device driver tree ... Fix up trivial conflicts: - arch/arm/mach-ep93xx/dma-m2p.c (deleted) - drivers/gpio/gpio-ep93xx.c (renamed and context nearby) - drivers/net/r8169.c (just context changes)
2011-07-25Merge branch 'next/deletion' of ↵Linus Torvalds4-239/+0
git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc * 'next/deletion' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: ARM: mach-loki: delete ARM: mach-s3c2400: delete ARM: mach-s3c24a0: delete
2011-07-25Merge branch 'next/cleanup' of ↵Linus Torvalds7-39/+4
git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc * 'next/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (133 commits) ARM: EXYNOS4: Change devname for FIMD clkdev ARM: S3C64XX: Cleanup mach/regs-fb.h from mach-s3c64xx ARM: S5PV210: Cleanup mach/regs-fb.h from mach-s5pv210 ARM: S5PC100: Cleanup mach/regs-fb.h from mach-s5pc100 ARM: S3C24XX: Use generic s3c_set_platdata for devices ARM: S3C64XX: Use generic s3c_set_platdata for OneNAND ARM: SAMSUNG: Use generic s3c_set_platdata for NAND ARM: SAMSUNG: Use generic s3c_set_platdata for USB OHCI ARM: SAMSUNG: Use generic s3c_set_platdata for HWMON ARM: SAMSUNG: Use generic s3c_set_platdata for FB ARM: SAMSUNG: Use generic s3c_set_platdata for TS ARM: S3C64XX: Add PWM backlight support on SMDK6410 ARM: S5P64X0: Add PWM backlight support on SMDK6450 ARM: S5P64X0: Add PWM backlight support on SMDK6440 ARM: S5PC100: Add PWM backlight support on SMDKC100 ARM: S5PV210: Add PWM backlight support on SMDKV210 ARM: EXYNOS4: Add PWM backlight support on SMDKC210 ARM: EXYNOS4: Add PWM backlight support on SMDKV310 ARM: SAMSUNG: Create a common infrastructure for PWM backlight support clocksource: convert 32-bit down counting clocksource on S5PV210/S5P64X0 ... Fix up trivial conflict in arch/arm/mach-imx/mach-scb9328.c
2011-07-23Merge branch 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds1-16/+27
* 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6: dt: include linux/errno.h in linux/of_address.h of/address: Add of_find_matching_node_by_address helper dt: remove extra xsysace platform_driver registration tty/serial: Add devicetree support for nVidia Tegra serial ports dt: add empty of_property_read_u32[_array] for non-dt dt: bindings: move SEC node under new crypto/ dt: add helper function to read u32 arrays tty/serial: change of_serial to use new of_property_read_u32() api dt: add 'const' for of_property_read_string parameter **out_string dt: add helper functions to read u32 and string property values tty: of_serial: support for 32 bit accesses dt: document the of_serial bindings dt/platform: allow device name to be overridden drivers/amba: create devices from device tree dt: add of_platform_populate() for creating device from the device tree dt: Add default match table for bus ids
2011-07-20Merge branch 'next-samsung-clkdev-fix' into next-samsung-cleanupKukjin Kim7-39/+4
2011-07-20serial: Remove redundant console_initcall from s3c and s5p console driversThomas Abraham7-35/+2
Uart port is registered as a console during the driver's probe. So explict registration of console with console_initcall is removed. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> [kgene.kim@samsung.com: removed changes of s3c2400 and s3c24a0] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-18ARM: mach-s3c2400: deleteNicolas Pitre3-114/+0
On Tue, 28 Jun 2011, Ben Dooks wrote: > On Tue, Jun 28, 2011 at 11:22:57PM +0200, Arnd Bergmann wrote: > > > On a related note, what about mach-s3c2400? It seems to be even more > > incomplete. > > Probably the same fate awaits that. It is so old that there's little > incentive to do anything with it. So out it goes as well. The PORT_S3C2400 definition in include/linux/serial_core.h is left there to prevent a reuse of the same number for another port type. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-07-18ARM: mach-s3c24a0: deleteNicolas Pitre3-125/+0
Commit bcae8aeb32 "[ARM] S3C24A0: Initial architecture support files" brought in a bunch of files while explicitly leaving out the corresponding Kconfig entry, stating that the series is not complete. More than 2.5 years later, the support for this has not seen any progress. This is therefore dead code. If someone wants to revive this code, it is always possible to retrieve it from the Git repository. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Ben Dooks <ben-linux@fluff.org> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-07-16Merge commit 'v3.0-rc7' into devicetree/nextGrant Likely8-12/+205
2011-07-14Merge branch 'master' of ↵David S. Miller1-1/+2
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/bluetooth/l2cap_core.c
2011-07-11Merge branch 'master' into for-nextJiri Kosina9-13/+208
Sync with Linus' tree to be able to apply pending patches that are based on newer code already present upstream.
2011-07-10tty/serial: Add devicetree support for nVidia Tegra serial portsGrant Likely1-0/+1
Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-09amba pl011: workaround for uart registers lockupShreshtha Kumar Sahu1-1/+122
This workaround aims to break the deadlock situation which raises during continuous transfer of data for long duration over uart with hardware flow control. It is observed that CTS interrupt cannot be cleared in uart interrupt register (ICR). Hence further transfer over uart gets blocked. It is seen that during such deadlock condition ICR don't get cleared even on multiple write. This leads pass_counter to decrease and finally reach zero. This can be taken as trigger point to run this UART_BT_WA. Workaround backups the register configuration, does soft reset of UART using BIT-0 of PRCC_K_SOFTRST_SET/CLEAR registers and restores the registers. This patch also provides support for uart init and exit function calls if present. Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-09pch_uart: add missing comment about OKI ML7223Alexander Stein1-0/+1
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Reviewed-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-09pch_uart: Add MSI supportAlexander Stein1-0/+5
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-07serial: samsung: Fix unintended usage of uart port 0 as consoleThomas Abraham1-4/+2
In s3c24xx_serial_console_setup function, if the uart port that is being setup as a console has not been initialized, an error can be returned instead of using uart port 0 as the default console port. The uart port that was intended to be used as a console could be initialized at a later point during boot and then registered as a console. This will avoid using uart port 0 as a unintended console port. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-07-06Merge branch 'master' of ↵David S. Miller7-11/+203
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2011-07-05Merge branch 'at91/fixes' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-2.6-arm-soc * 'at91/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-2.6-arm-soc: AT91: Change nand buswidth logic to match hardware default configuration at91: Use "pclk" as con_id on at91cap9 and at91rm9200 at91: fix udc, ehci and mmc clock device name for cap9/9g45/9rl atmel_serial: fix internal port num at91: fix at91_set_serial_console: use platform device id
2011-07-04tty/serial: change of_serial to use new of_property_read_u32() apiGrant Likely1-22/+15
Simplifies the code a bit and drops a few lines. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-07-02tty: serial: samsung.c remove legacy PM code.MyungJoo Ham1-13/+14
This patch "modernize" tty/serial/samsung.c to use non-legacy code for suspend/resume. Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: KyungMin Park <kyungmin.park@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-02SERIAL: SC26xx: Fix link error.Ralf Baechle1-1/+1
Kconfig allows enabling console support for the SC26xx driver even when it's configured as a module resulting in a: ERROR: "uart_console_device" [drivers/tty/serial/sc26xx.ko] undefined! modpost error since the driver was merged in eea63e0e8a60d00485b47fb6e75d9aa2566b989b [SC26XX: New serial driver for SC2681 uarts] in 2.6.25. Fixed by only allowing console support to be enabled if the driver is builtin. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: stable <stable@kernel.org> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-02serial: mrst_max3110: initialize waitqueue earlierMika Westerberg1-1/+2
The driver went to initialize its waitqueue at the start of the main processing thread. However, it is possible that this thread is not scheduled on a CPU before the write function is called which leads to a following error: BUG: spinlock bad magic on CPU#1, swapper/1 lock: f5f3ebdc, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 Pid: 1, comm: swapper Not tainted 3.0.0-rc2+ #67 Call Trace: [<c1289663>] spin_bug+0xa3/0xf0 [<c12897ad>] do_raw_spin_lock+0x7d/0x150 [<c1490006>] ? init_idle+0x8d/0x20c [<c14963de>] _raw_spin_lock_irqsave+0x4e/0x60 [<c102f2bb>] ? __wake_up+0x1b/0x50 [<c102f2bb>] __wake_up+0x1b/0x50 [<c12d03bc>] ? uart_console_write+0x4c/0x60 [<c12d36c0>] ? serial_m3110_enable_ms+0x10/0x10 [<c12d3715>] serial_m3110_con_write+0x55/0x60 [<c1041575>] __call_console_drivers+0x75/0x90 [<c10415d9>] _call_console_drivers+0x49/0x80 [<c1041baa>] console_unlock+0xca/0x1f0 [<c10420ef>] vprintk+0x18f/0x4f0 [<c10787cb>] ? trace_hardirqs_on+0xb/0x10 [<c14928a3>] printk+0x18/0x1a [<c1042730>] register_console+0x2e0/0x350 [<c12d098e>] uart_add_one_port+0x33e/0x3d0 [<c10787cb>] ? trace_hardirqs_on+0xb/0x10 [<c103e10b>] ? try_to_wake_up+0x18b/0x250 [<c1485ba6>] serial_m3110_probe+0x1c2/0x1df [<c12d3d20>] ? serial_m3110_suspend+0x40/0x40 [<c1303db7>] spi_drv_probe+0x17/0x20 ... We fix this by initializing the waitqueue before the main thread is created. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-02mrst_max3110: Change max missing message priority.William Douglas1-1/+1
Change print message to notice instead of error to clean up non critcal messages showing on startup. The MAX3111 not being present is a normal path for end user systems. Signed-off-by: William Douglas <william.douglas@intel.com> [rebased on 3.0, switched to dev_dbg()] Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-02tty: s5pv210: Add delay loop on fifo reset function for UARTJongpill Lee1-0/+4
This patch addes delay loop on fifo reset function for UART. On high speed freq, it needs delay function when fifo reset. If not, system will hang by this uart reset problem when resuming from suspend mode. Signed-off-by: Jongpill Lee <boyko.lee@samsung.com> Signed-off-by: Jaecheol Lee <jc.lee@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-02tty/serial: Fix XSCALE serial ports, e.g. ce4100Stephen Warren1-1/+1
Commit 4539c24fe4f92c09ee668ef959d3e8180df619b9 "tty/serial: Add explicit PORT_TEGRA type" introduced separate flags describing the need for IER bits UUE and RTOIE. Both bits are required for the XSCALE port type. While that patch updated uart_config[] as required, the auto-probing code wasn't updated to set the RTOIE flag when an XSCALE port type was detected. This caused such ports to stop working. This patch rectifies that. Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Stephen Warren <swarren@nvidia.com> Cc: stable <stable@kernel.org> [3.0] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-02serial: bfin_5xx: fix off-by-one with resource sizeMike Frysinger1-2/+1
This doesn't cause any real bugs, but it should still be fixed. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-30tty: of_serial: support for 32 bit accessesJamie Iles1-0/+17
Some platforms e.g. TI Davinci require 32-bit accesses to the UARTs. The of_serial driver currently registers all UARTs as UPIO_MEM. Add a new attribute "reg-io-width" to allow the port to be registered with different IO width requirements. Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-29Merge branches 'common/serial-rework' and 'sh/stable-updates' into sh-latestPaul Mundt1-77/+120
2011-06-28Merge branch 'tty-linus' of ↵Linus Torvalds6-8/+199
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 * 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: serial: bcm63xx_uart: fix irq storm after rx fifo overrun. amba pl011: platform data for reg lockup and glitch v2 amba pl011: workaround for uart registers lockup tty: n_gsm: improper skb_pull() use was leaking framed data tty: n_gsm: Fixed logic to decode break signal from modem status TTY: ntty, add one more sanity check TTY: ldisc, do not close until there are readers 8250: Fix capabilities when changing the port type 8250_pci: Fix missing const from merges ARM: SAMSUNG: serial: Fix on handling of one clock source for UART serial: ioremap warning fix for jsm driver. 8250_pci: add -ENODEV code for Intel EG20T PCH
2011-06-28serial: sh-sci: Fix up pretty name printing for port IRQs.Paul Mundt1-33/+85
Presently these were all using the same static string with no regard to dev_name() and the like. This implements a bit of rework to name the IRQ dynamically, as it should have been doing all along anyways. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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