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2011-07-26atomic: use <linux/atomic.h>Arun Sharma
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>
2011-07-25Merge branch 'tty-next' of ↵Linus Torvalds
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 ...
2011-07-25Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (99 commits) drivers/virt: add missing linux/interrupt.h to fsl_hypervisor.c powerpc/85xx: fix mpic configuration in CAMP mode powerpc: Copy back TIF flags on return from softirq stack powerpc/64: Make server perfmon only built on ppc64 server devices powerpc/pseries: Fix hvc_vio.c build due to recent changes powerpc: Exporting boot_cpuid_phys powerpc: Add CFAR to oops output hvc_console: Add kdb support powerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmon powerpc/irq: Quieten irq mapping printks powerpc: Enable lockup and hung task detectors in pseries and ppc64 defeconfigs powerpc: Add mpt2sas driver to pseries and ppc64 defconfig powerpc: Disable IRQs off tracer in ppc64 defconfig powerpc: Sync pseries and ppc64 defconfigs powerpc/pseries/hvconsole: Fix dropped console output hvc_console: Improve tty/console put_chars handling powerpc/kdump: Fix timeout in crash_kexec_wait_realmode powerpc/mm: Fix output of total_ram. powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards powerpc: Correct annotations of pmu registration functions ... Fix up trivial Kconfig/Makefile conflicts in arch/powerpc, drivers, and drivers/cpufreq
2011-07-25Merge branch 'for-linus' of ↵Linus Torvalds
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 Torvalds
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 Torvalds
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
2011-07-22Merge branch 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* '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
2011-07-21Merge branch 'next-samsung-clkdev-fix' into next-samsung-cleanupKukjin Kim
2011-07-20serial: Remove redundant console_initcall from s3c and s5p console driversThomas Abraham
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>
2011-07-20powerpc/pseries: Fix hvc_vio.c build due to recent changesBenjamin Herrenschmidt
For some reason I didn't notice the failure in my test builds, probably lacking caffeine or something... Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-07-19hvc_console: Add kdb supportAnton Blanchard
Add poll_get_char and poll_put_char for kdb. Enable kdb at boot with: kgdboc=hvc0 or at runtime with: echo hvc0 > /sys/module/kgdboc/parameters/kgdboc Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-07-19powerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmonAnton Blanchard
commit 4d2bb3f50036 (powerpc/pseries: Re-implement HVSI as part of hvc_vio) changed udbg_getc to be based on hvterm_raw_get_chars. Unfortunately hvterm_raw_get_chars returns -EAGAIN if you ask for anything less than 16 characters. As a result xmon no longer accepts input and prints a stream of junk to the screen. The recent change highlights a problem that xmon on pseries VIO has had all along, that it can drop input characters. The issue is the hypervisor call does not take a count argument and can return up to 16 characters. This patch adds a per vterm buffer that we copy input data into and give it out as requested. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-07-19hvc_console: Improve tty/console put_chars handlingHendrik Brueckner
Currently, the hvc_console_print() function drops console output if the hvc backend's put_chars() returns 0. This patch changes this behavior to allow a retry through returning -EAGAIN. This change also affects the hvc_push() function. Both functions are changed to handle -EAGAIN and to retry the put_chars() operation. If a hvc backend returns -EAGAIN, the retry handling differs: - hvc_console_print() spins to write the complete console output. - hvc_push() behaves the same way as for returning 0. Now hvc backends can indirectly control the way how console output is handled through the hvc console layer. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Acked-by: Anton Blanchard <anton@samba.org> Cc: <stable@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-07-18ARM: mach-s3c2400: deleteNicolas Pitre
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 Pitre
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>
2011-07-15Merge commit 'v3.0-rc7' into devicetree/nextGrant Likely
2011-07-14Merge branch 'master' of ↵David S. Miller
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 Kosina
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 Likely
Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-08amba pl011: workaround for uart registers lockupShreshtha Kumar Sahu
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>
2011-07-08n_gsm: fix the wrong FCS handlingDu, Alek
FCS could be GSM0_SOF, so will break state machine... [This byte isn't quoted in any way so a SOF here doesn't imply an error occurred.] Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: stable <stable@kernel.org> [3.0] [Trivial but best backported once its in 3.1rc I think] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-08pch_uart: add missing comment about OKI ML7223Alexander Stein
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>
2011-07-08pch_uart: Add MSI supportAlexander Stein
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 Abraham
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>
2011-07-05Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2011-07-04Merge branch 'at91/fixes' of ↵Linus Torvalds
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 Likely
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>
2011-07-01tty: fix "IRQ45: nobody cared"Andrew McGregor
Unthrottling the TTY during close ends up enabling interrupts on a device not on the active list, which will never have the interrupts cleared. Doctor, it hurts when I do this. >>> On 6/2/2011 at 01:56 AM, in message <20110601145608.3e586e16@bob.linux.org.uk>, Alan Cox <alan@linux.intel.com> wrote: > On Wed, 01 Jun 2011 10:34:07 +1200 > "andrew mcgregor" <andrew.mcgregor@alliedtelesis.co.nz> wrote: > > The LKML message > > http://kerneltrap.org/mailarchive/linux-kernel/2010/2/25/4541847 from > > February doesn't seem to have been resolved since. We struck the > > issue, and the patch below (against 2.6.32) fixes it. Should I > > supply a patch against 3.0.0rc? > > I think that would be sensible. I don't actually see how you hit it as > the IRQ ought to be masked by then but it's certainly wrong for n_tty > to be calling into check_unthrottle at that point. > > So yes please send a patch with a suitable Signed-off-by: line to > linux-serial and cc GregKH <greg@kroah.com> as well. > > Alan Signed-off-by: Andrew McGregor <andrew.mcgregor@alliedtelesis.co.nz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-01tty: serial: samsung.c remove legacy PM code.MyungJoo Ham
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>
2011-07-01SERIAL: SC26xx: Fix link error.Ralf Baechle
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>
2011-07-01serial: mrst_max3110: initialize waitqueue earlierMika Westerberg
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>
2011-07-01mrst_max3110: Change max missing message priority.William Douglas
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>
2011-07-01tty: s5pv210: Add delay loop on fifo reset function for UARTJongpill Lee
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>
2011-07-01tty/serial: Fix XSCALE serial ports, e.g. ce4100Stephen Warren
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>
2011-07-01serial: bfin_5xx: fix off-by-one with resource sizeMike Frysinger
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>
2011-07-01drivers/tty: use printk_ratelimited() instead of printk_ratelimit()Manuel Zerpies
Since the printk_ratelimit() shouldn't be used anymore (see comment in include/linux/printk.h), replace it with printk_ratelimited(). Signed-off-by: Manuel Zerpies <manuel.f.zerpies@ww.stud.uni-erlangen.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-01tty: n_gsm: Added refcount usage to gsm_mux and gsm_dlci structsRuss Gorby
The gsm_mux is created/destroyed when ldisc is opened/closed but clients of the MUX channel devices (gsmttyN) may access this structure as long as the TTYs are open. For the open, the ldisc open is guaranteed to preceed the TTY open, but the close has no such guaranteed ordering. As a result, the gsm_mux can be freed in the ldisc close before being accessed by one of the TTY clients. This can happen if the ldisc is removed while there are open, active MUX channels. A similar situation exists for DLCI-0, it is basically a resource shared by MUX and DLCI , and should not be freed while they can be accessed To avoid this, gsm_mux and dlcis now have a reference counter ldisc open takes a reference on the mux and all the dlcis gsmtty_open takes a reference on the mux, dlci0 and its specific dlci. Dropping the last reference initiates the actual free. Signed-off-by: Russ Gorby <russ.gorby@intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-01tty: n_gsm: Add raw-ip supportRuss Gorby
This patch adds the ability to open a network data connection over a mux virtual tty channel. This is for modems that support data connections with raw IP frames instead of PPP. On high speed data connections this eliminates a significant amount of PPP overhead. To use this interface, the application must first tell the modem to open a network connection on a virtual tty. Once that has been accomplished, the app will issue an IOCTL on that virtual tty to create the network interface. The IOCTL will return the index of the interface created. The two IOCTL commands are: ioctl( fd, GSMIOC_ENABLE_NET ); ioctl( fd, GSMIOC_DISABLE_NET ); Signed-off-by: Russ Gorby <russ.gorby@intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-01tty: n_gsm: expose gsmtty device nodes at ldisc open timeRuss Gorby
The n_gsm driver being an ldisc, does not provide a convenient method e.g. udev to create the tty device nodes automatically when the ldisc is opened. The TTY device nodes are now created via calls to tty_register_device from the ldisc open. Signed-off-by: Russ Gorby <russ.gorby@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-01powerpc/hvsi: Fix conflict with old HVSI driverBenjamin Herrenschmidt
A mix of think & mismerge on my side caused a problem where both the new hvsi_lib and the old hvsi driver gets compiled and try to define symbols with the same name. This fixes it by renaming the hvsi_lib exported symbols. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-06-30tty: of_serial: support for 32 bit accessesJamie Iles
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>
2011-06-30Merge remote branch 'origin/master' into nextBenjamin Herrenschmidt
2011-06-29powerpc/pseries: Move hvsi support into a libraryBenjamin Herrenschmidt
This will allow a different backend to share it Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-06-29powerpc/pseries: Re-implement HVSI as part of hvc_vioBenjamin Herrenschmidt
On pseries machines, consoles are provided by the hypervisor using a low level get_chars/put_chars type interface. However, this is really just a transport to the service processor which implements them either as "raw" console (networked consoles, HMC, ...) or as "hvsi" serial ports. The later is a simple packet protocol on top of the raw character interface that is supposed to convey additional "serial port" style semantics. In practice however, all it does is provide a way to read the CD line and set/clear our DTR line, that's it. We currently implement the "raw" protocol as an hvc console backend (/dev/hvcN) and the "hvsi" protocol using a separate tty driver (/dev/hvsi0). However this is quite impractical. The arbitrary difference between the two type of devices has been a major source of user (and distro) confusion. Additionally, there's an additional mini -hvsi implementation in the pseries platform code for our low level debug console and early boot kernel messages, which means code duplication, though that low level variant is impractical as it's incapable of doing the initial protocol negociation to establish the link to the FSP. This essentially replaces the dedicated hvsi driver and the platform udbg code completely by extending the existing hvc_vio backend used in "raw" mode so that: - It now supports HVSI as well - We add support for hvc backend providing tiocm{get,set} - It also provides a udbg interface for early debug and boot console This is overall less code, though this will only be obvious once we remove the old "hvsi" driver, which is still available for now. When the old driver is enabled, the new code still kicks in for the low level udbg console, replacing the old mini implementation in the platform code, it just doesn't provide the higher level "hvc" interface. In addition to producing generally simler code, this has several benefits over our current situation: - The user/distro only has to deal with /dev/hvcN for the hypervisor console, avoiding all sort of confusion that has plagued us in the past - The tty, kernel and low level debug console all use the same code base which supports the full protocol establishment process, thus the console is now available much earlier than it used to be with the old HVSI driver. The kernel console works much earlier and udbg is available much earlier too. Hackers can enable a hard coded very-early debug console as well that works with HVSI (previously that was only supported for the "raw" mode). I've tried to keep the same semantics as hvsi relative to how I react to things like CD changes, with some subtle differences though: - I clear DTR on close if HUPCL is set - Current hvsi triggers a hangup if it detects a up->down transition on CD (you can still open a console with CD down). My new implementation triggers a hangup if the link to the FSP is severed, and severs it upon detecting a up->down transition on CD. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-06-29powerpc/pseries: Factor HVSI header struct in packet definitionsBenjamin Herrenschmidt
Embed the struct hvsi_header in the various packet definitions rather than open coding it multiple times. Will help provide stronger type checking. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-06-29powerpc/hvsi: Move HVSI protocol definitions to a header fileBenjamin Herrenschmidt
This moves various HVSI protocol definitions from the hvsi.c driver to a header file that can be used later on by a udbg implementation Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-06-28Merge branch 'tty-linus' of ↵Linus Torvalds
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
2011-06-27drivers/tty/serial/8250_pci.c: fix warningAndrew Morton
Fis the warning drivers/tty/serial/8250_pci.c:1457: warning: initialization from incompatible pointer type Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-25atmel_serial: fix internal port numJean-Christophe PLAGNIOL-VILLARD
the atmel_ports is link to the console number and not the device id this was not detected on at91 as we always register the dbgu on the console as ttyS0 tested on at91sam9263 by setting the dbgu as ttyS1 and use as console diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c index 70e5646..9b8a14f 100644 - a/arch/arm/mach-at91/board-sam9263ek.c + b/arch/arm/mach-at91/board-sam9263ek.c @@ -58,14 +58,14 @@ static void __init ek_init_early(void) /* Initialize processor: 16.367 MHz crystal */ at91_initialize(16367660); - /* DBGU on ttyS0. (Rx & Tx only) */ - at91_register_uart(0, 0, 0); + /* DBGU on ttyS1. (Rx & Tx only) */ + at91_register_uart(0, 1, 0); - /* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */ - at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS); + /* USART0 on ttyS0. (Rx, Tx, RTS, CTS) */ + at91_register_uart(AT91SAM9263_ID_US0, 0, ATMEL_UART_CTS | ATMEL_UART_RTS); - /* set serial console to ttyS0 (ie, DBGU) */ - at91_set_serial_console(0); + /* set serial console to ttyS1 (ie, DBGU) */ + at91_set_serial_console(1); } /* Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
2011-06-24treewide: transciever/transceiver spelling fixesJoe Perches
Just tyops. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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