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path: root/drivers/tty/serial
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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
2011-06-28Merge 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>
2011-06-23serial: 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 [<c14963de>] _raw_spin_lock_irqsave+0x4e/0x60 [<c102f2bb>] __wake_up+0x1b/0x50 [<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 [<c14928a3>] printk+0x18/0x1a [<c1042730>] register_console+0x2e0/0x350 [<c12d098e>] uart_add_one_port+0x33e/0x3d0 [<c1485ba6>] serial_m3110_probe+0x1c2/0x1df [<c1303db7>] spi_drv_probe+0x17/0x20 ... 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: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-23mrst_max3110: Change max missing message priority.William Douglas
Change print message to notice instead of error to clean up non critical 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: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-16serial: bcm63xx_uart: fix irq storm after rx fifo overrun.Maxime Bizon
RX fifo reset is required to clear irq. Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-16amba 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>
2011-06-15drivers/tty/serial/pch_uart.c: don't oops if dmi_get_system_info returns NULLAlexander Stein
If dmi_get_system_info() returns NULL, pch_uart_init_port() will dereferencea a zero pointer. This oops was observed on an Atom based board which has no BIOS, but a bootloder which doesn't provide DMI data. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Cc: Greg KH <gregkh@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-078250: Fix capabilities when changing the port typeleitao@linux.vnet.ibm.com
When changing the port type, the capabilities flags should be changed also, otherwise the capabilities will not correspond to the port type, which make set_sleep() crash on rmmod. This patch just assign the correct capabilites when the port changes. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> CC: Michael Reed <mreed@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-078250_pci: Fix missing const from mergesAlan Cox
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Antony Pavlov <antony@niisi.msk.ru> Signed-off-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Vasily Averin <vvs@sw.ru> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-07ARM: SAMSUNG: serial: Fix on handling of one clock source for UARTBoojin Kim
This patch fixes the way of comparison for handling of two or more clock sources for UART. For example, if just only one clock source is defined even though there are two clock sources for UART, the serial driver does not set proper clock up. Of course, it is problem. So this patch changes the condition of comparison to avoid useless setup clock and adds a flag 'NO_NEED_CHECK_CLKSRC' which means selection of source clock is not required. In addition, since the Exynos4210 has only one clock source for UART this patch adds the flag into its common_init_uarts(). Signed-off-by: Boojin Kim <boojin.kim@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-07serial: ioremap warning fix for jsm driver.Lennart Sorensen
I saw a warning about ioremap from the jsm driver on a system which looked like this: resource map sanity check conflict: 0xe0200800 0xe02017ff 0xe0200800 0xe0200fff 0000:01:08.0 Turns out the warning is valid. The jsm driver has been asking to ioremap 0x1000 forever, but in fact only 8 port chips have 0x1000 bytes of memory. 4 port chips have 0x800 and 2 port chips have 0x400 according to the data sheet. It makes more sense to map the size of the region rather than a hard coded value. If you happen to have the region legitimately mapped to a base address that is not 4K aligned, ioremap complains otherwise. Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-038250_pci: add -ENODEV code for Intel EG20T PCHTomoya MORINAGA
Intel EG20T PCH has UART device which is compatible with 8250. Currently, with general configuration, the PCH UART driver is not loaded but 8250 standard driver is loaded. Therefore, in case of using PCH UART driver, need to disable 8250 pci function. However, this procedure is not best solution. This patch, in 8250_pci, if the device is the PCH or the family IOH, '-ENODEV' is returned. As a result, disabling 8250-pci processing becomes unnecessary. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-27Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (45 commits) ARM: 6945/1: Add unwinding support for division functions ARM: kill pmd_off() ARM: 6944/1: mm: allow ASID 0 to be allocated to tasks ARM: 6943/1: mm: use TTBR1 instead of reserved context ID ARM: 6942/1: mm: make TTBR1 always point to swapper_pg_dir on ARMv6/7 ARM: 6941/1: cache: ensure MVA is cacheline aligned in flush_kern_dcache_area ARM: add sendmmsg syscall ARM: 6863/1: allow hotplug on msm ARM: 6832/1: mmci: support for ST-Ericsson db8500v2 ARM: 6830/1: mach-ux500: force PrimeCell revisions ARM: 6829/1: amba: make hardcoded periphid override hardware ARM: 6828/1: mach-ux500: delete SSP PrimeCell ID ARM: 6827/1: mach-netx: delete hardcoded periphid ARM: 6940/1: fiq: Briefly document driver responsibilities for suspend/resume ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2 ARM: 6914/1: sparsemem: fix highmem detection when using SPARSEMEM ARM: 6913/1: sparsemem: allow pfn_valid to be overridden when using SPARSEMEM at91: drop at572d940hf support at91rm9200: introduce at91rm9200_set_type to specficy cpu package at91: drop boot_params and PLAT_PHYS_OFFSET ...
2011-05-27Merge branches 'devel', 'devel-stable' and 'fixes' into for-linusRussell King
2011-05-26m32r: fix spin_lock_irqsave() misuseKOSAKI Motohiro
spin_lock_irqsave() requires unsigned long. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25drivers/tty/serial/pch_uart.c needs slab.hAndrew Morton
alpha allmodconfig: drivers/tty/serial/pch_uart.c: In function 'dma_handle_tx': drivers/tty/serial/pch_uart.c:873: error: implicit declaration of function 'kzalloc' drivers/tty/serial/pch_uart.c:873: warning: assignment makes pointer from integer without a cast drivers/tty/serial/pch_uart.c: In function 'pch_uart_init_port': drivers/tty/serial/pch_uart.c:1403: warning: assignment makes pointer from integer without a cast Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25arch, mm: filter disallowed nodes from arch specific show_mem functionsDavid Rientjes
Architectures that implement their own show_mem() function did not pass the filter argument to show_free_areas() to appropriately avoid emitting the state of nodes that are disallowed in the current context. This patch now passes the filter argument to show_free_areas() so those nodes are now avoided. This patch also removes the show_free_areas() wrapper around __show_free_areas() and converts existing callers to pass an empty filter. ia64 emits additional information for each node, so skip_free_areas_zone() must be made global to filter disallowed nodes and it is converted to use a nid argument rather than a zone for this use case. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: James Bottomley <jejb@parisc-linux.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25atmel_serial: keep the platform_device unchangedJean-Christophe PLAGNIOL-VILLARD
specify the port num via platform_data this will allow to match the clock with the plaform_dev staticaly Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Alan Cox <alan@linux.intel.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Patrice Vilchez <patrice.vilchez@atmel.com> Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: Make struct pcmcia_device_id const, sound drivers edition staging: pcmcia: Convert pcmcia_device_id declarations to const pcmcia: Convert pcmcia_device_id declarations to const pcmcia: Make declaration and uses of struct pcmcia_device_id const pcmcia/sa1100: put sa11x0_pcmcia_hw_init[] to .devinit.data
2011-05-23Merge branch 'sh-latest' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits) sh: Ignore R_SH_NONE module relocations. SH: SE7751: Fix pcibios_map_platform_irq prototype. sh: remove warning and warning_symbol from struct stacktrace_ops sh: wire up sys_sendmmsg. clocksource: sh_tmu: Runtime PM support clocksource: sh_tmu: __clocksource_updatefreq_hz() update clocksource: sh_cmt: Runtime PM support clocksource: sh_cmt: __clocksource_updatefreq_hz() update dmaengine: shdma: synchronize RCU before freeing, simplify spinlock dmaengine: shdma: add runtime- and system-level power management dmaengine: shdma: fix locking sh: sh-sci: sh7377 and sh73a0 build fixes sh: cosmetic improvement: use an existing pointer serial: sh-sci: suspend/resume wakeup support V2 serial: sh-sci: Runtime PM support sh: select IRQ_FORCED_THREADING. sh: intc: Set virtual IRQs as nothread. sh: fixup fpu.o compile order i2c: add a module alias to the sh-mobile driver ALSA: add a module alias to the FSI driver ...
2011-05-23Merge 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: (48 commits) serial: 8250_pci: add support for Cronyx Omega PCI multiserial board. tty/serial: Fix break handling for PORT_TEGRA tty/serial: Add explicit PORT_TEGRA type n_tracerouter and n_tracesink ldisc additions. Intel PTI implementaiton of MIPI 1149.7. Kernel documentation for the PTI feature. export kernel call get_task_comm(). tty: Remove to support serial for S5P6442 pch_phub: Support new device ML7223 8250_pci: Add support for the Digi/IBM PCIe 2-port Adapter ASoC: Update cx20442 for TTY API change pch_uart: Support new device ML7223 IOH parport: Use request_muxed_region for IT87 probe and lock tty/serial: add support for Xilinx PS UART n_gsm: Use print_hex_dump_bytes drivers/tty/moxa.c: Put correct tty value TTY: tty_io, annotate locking functions TTY: serial_core, remove superfluous set_task_state TTY: serial_core, remove invalid test Char: moxa, fix locking in moxa_write ... Fix up trivial conflicts in drivers/bluetooth/hci_ldisc.c and drivers/tty/serial/Makefile. I did the hci_ldisc thing as an evil merge, cleaning things up.
2011-05-23Merge 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: (39 commits) b43: fix comment typo reqest -> request Haavard Skinnemoen has left Atmel cris: typo in mach-fs Makefile Kconfig: fix copy/paste-ism for dell-wmi-aio driver doc: timers-howto: fix a typo ("unsgined") perf: Only include annotate.h once in tools/perf/util/ui/browsers/annotate.c md, raid5: Fix spelling error in comment ('Ofcourse' --> 'Of course'). treewide: fix a few typos in comments regulator: change debug statement be consistent with the style of the rest Revert "arm: mach-u300/gpio: Fix mem_region resource size miscalculations" audit: acquire creds selectively to reduce atomic op overhead rtlwifi: don't touch with treewide double semicolon removal treewide: cleanup continuations and remove logging message whitespace ath9k_hw: don't touch with treewide double semicolon removal include/linux/leds-regulator.h: fix syntax in example code tty: fix typo in descripton of tty_termios_encode_baud_rate xtensa: remove obsolete BKL kernel option from defconfig m68k: fix comment typo 'occcured' arch:Kconfig.locks Remove unused config option. treewide: remove extra semicolons ...
2011-05-23sh: sh-sci: sh7377 and sh73a0 build fixesMagnus Damm
Fix sh7377 and sh73a0 build failure: drivers/tty/serial/sh-sci.c: In function 'scif_txfill': drivers/tty/serial/sh-sci.c:338: error: implicit declaration of function 'sci_SCTFDR_in' drivers/tty/serial/sh-sci.c: In function 'scif_rxfill': drivers/tty/serial/sh-sci.c:351: error: implicit declaration of function 'sci_SCRFDR_in' make[3]: *** [drivers/tty/serial/sh-sci.o] Error 1 make[2]: *** [drivers/tty/serial] Error 2 make[1]: *** [drivers/tty] Error 2 make: *** [drivers] Error 2 Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23serial: sh-sci: suspend/resume wakeup support V2Magnus Damm
This patch adds wakeup support to the sh-sci driver. The serial core deals with all details but defaults to wakeup disabled. So to make use of this feature enable wakeup in sysfs: echo enabled > /sys/class/tty/ttySC0/power/wakeup Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23serial: sh-sci: Runtime PM supportMagnus Damm
Add support for Runtime PM in the sh-sci driver. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-19serial: 8250_pci: add support for Cronyx Omega PCI multiserial board.Antony Pavlov
This patch adds support for the Omega-PCI, an 8-port asynchronous multiport adapter for computers with PCI bus [1]. [1] http://www.cronyx.ru/hardware/ompci.html Signed-off-by: Antony Pavlov <antony@niisi.msk.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19tty/serial: Fix break handling for PORT_TEGRAStephen Warren
When a break is received, Tegra's UART apparently fills the FIFO with 0 bytes. These must be drained so that they aren't interpreted as actual data received. This allows e.g. MAGIC_SYSRQ to work on Tegra's UARTs. v2: Added FIXME comment to clear_rx_fifo Originally-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19tty/serial: Add explicit PORT_TEGRA typeStephen Warren
Tegra's UART is currently auto-detected as PORT_XSCALE due to register bit UART_IER.UUE being writable. However, the Tegra documentation states that this register bit is reserved. Hence, we should not program it. Instead, the documentation specifies that the UART is 16550 compatible. However, Tegra does need register bit UART_IER.RTOIE set, which is not enabled by any 16550 port type. This was not noticed before, since PORT_XSCALE enables CAP_UUE, which conflates both UUE and RTOIE bit programming. This change defines PORT_TEGRA that doesn't set UART_CAP_UUE, but does set UART_CAP_RTOIE, which is a new capability indicating that the RTOIE bit needs to be enabled. Based-on-code-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19SERIAL: Lantiq: Add driver for MIPS Lantiq SOCs.John Crispin
Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Ralph Hempel <ralph.hempel@lantiq.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: alan@lxorguk.ukuu.org.uk Cc: linux-mips@linux-mips.org Cc: linux-serial@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/2269/ Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-05-18drivercore: revert addition of of_match to struct deviceGrant Likely
Commit b826291c, "drivercore/dt: add a match table pointer to struct device" added an of_match pointer to struct device to cache the of_match_table entry discovered at driver match time. This was unsafe because matching is not an atomic operation with probing a driver. If two or more drivers are attempted to be matched to a driver at the same time, then the cached matching entry pointer could get overwritten. This patch reverts the of_match cache pointer and reworks all users to call of_match_device() directly instead. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-12tty: Remove to support serial for S5P6442Kukjin Kim
According to removing ARCH_S5P6442, we don't need to support serial for S5P6442. Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-118250_pci: Add support for the Digi/IBM PCIe 2-port AdapterScott Kilau
Add support to the 8250 PCI serial driver for the Digi/IBM PCIe 2-port Async EIA-232 Adapter. Oxford Semiconductor produces a 2/4/8 port UART (OXPCIe952/OXPCIe954/OXPCIe958) chip called the Tornado, that can be used to create a very simple serial board product. The kernel sources currently have just 2 vendors using this chip, which is Oxford and Mainpipe. This new Digi/IBM serial product now uses it as well. Rather than create a long running comment of vendors using the chip, the one changed comment in the patch below now just lists "For Oxford Semiconductor Tornado based devices" to be a more generic comment for all vendors that end up using the Oxford Tornado chip. Cc: Michael Reed <mreed10@us.ibm.com> Signed-off-by: Scott Kilau <scottk@digi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-10pch_uart: Support new device ML7223 IOHTomoya MORINAGA
Support new device OKI SEMICONDUCTOR ML7223 IOH(Input/Output Hub). The ML7223 IOH is for MP(Media Phone) use. The ML7223 is companion chip for Intel Atom E6xx series. The ML7223 is completely compatible for Intel EG20T PCH. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-06pcmcia: Convert pcmcia_device_id declarations to constJoe Perches
Saves about 50KB of data. Old/new size of all objects: text data bss dec hex filename 563015 80096 130684 773795 bcea3 (TOTALS) 610916 32256 130632 773804 bceac (TOTALS) Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be> (for drivers/net/can/softing/softing_cs.c) Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-05-03tty/serial: add support for Xilinx PS UARTJohn Linn
The Xilinx PS Uart is used on the new ARM based SoC. This UART is not compatible with others such that a seperate driver is required. Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-26treewide: cleanup continuations and remove logging message whitespaceJoe Perches
Using C line continuation inside format strings is error prone. Clean up the unintended whitespace introduced by misuse of \. Neaten correctly used line continations as well for consistency. drivers/scsi/arcmsr/arcmsr_hba.c has these errors as well, but arcmsr needs a lot more work and the driver should likely be moved to staging instead. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-04-26Merge branch 'master' into for-nextJiri Kosina
Fast-forwarded to current state of Linus' tree as there are patches to be applied for files that didn't exist on the old branch.
2011-04-25TTY: serial_core, remove superfluous set_task_stateJiri Slaby
msleep* is guaranteed to return with TASK_RUNNING task state. And since there is no other set_task_state in the paths of uart_wait_until_sent, we need not to set_task_state to TASK_RUNNING. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-25TTY: serial_core, remove invalid testJiri Slaby
tty->index (named here as line) is set up in initialize_tty_struct. The value is checked in get_tty_driver for the found driver as: if (device < base || device >= base + p->num) continue; *index = device - base; So index/line can never be more than driver->num. Hence remove this test from uart_open. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19serial/imx: read cts state only after acking cts change irqUwe Kleine-König
If cts changes between reading the level at the cts input (USR1_RTSS) and acking the irq (USR1_RTSD) the last edge doesn't generate an irq and uart_handle_cts_change is called with a outdated value for cts. The race was introduced by commit ceca629 ([ARM] 2971/1: i.MX uart handle rts irq) Reported-by: Arwed Springer <Arwed.Springer@de.trumpf.com> Tested-by: Arwed Springer <Arwed.Springer@de.trumpf.com> Cc: stable@kernel.org # 2.6.14+ Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19Serial: Remove unused code.Govindraj.R
Remove stale code in serial_core layer. Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19Serial: ifx6x60c: Remove duplicate includes of linux/tty.hJesper Juhl
Including linux/tty.h 3 times is a little over the top - once will do. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19tty: remove invalid location line in file headerJovi Zhang
remove invalid location line in each file header after location moved from driver/char to driver/tty Signed-off-by: Jovi Zhang <bookjovi@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19serial: core, remove uart_update_termiosJiri Slaby
Now, uart_update_termios is empty, so it's time to remove it. We no longer need a live tty in .dtr_rts. So this should prune all the bugs where tty is zeroed in port->tty during tty_port_block_til_ready. There is one thing to note. We don't set ASYNC_NORMAL_ACTIVE now. It's because this is done already in tty_port_block_til_ready. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19serial: core, do not set DTR/RTS twice on startupJiri Slaby
In .dtr_rts we do: uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS) and call uart_update_termios. It does: uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS) once again. As the only callsite of uart_update_termios is .dtr_rts, remove the uart_set_mctrl from uart_update_termios to not set it twice. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19serial: core, move termios handling to uart_startupJiri Slaby
We should not fiddle with speed and cflags in .dtr_rts hook. Actually we might not have tty at that moment already. So move the console cflag copy and speed setup into uart_startup. Actually the speed setup is already there, but we need to call it unconditionally (uart_startup is called from uart_open with hw_init = 0). This means we move uart_change_speed before dtr/rts setup in .dtr_rts. But this should not matter as the setup should be called after uart_change_speed anyway. Before: After: dtr/rts setup (dtr_rts) uart_change_speed (startup) uart_change_speed (update_termios) dtr/rts setup (dtr_rts) dtr/rts setup (update_termios) dtr/rts setup (update_termios) The second setup will dismiss with the next patch. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19serial: altera_uart: Scan for a free port if platform device id is -1Tobias Klauser
Devices extracted from device tree all seem to have pdev->id set to -1. Up until now we mapped all devices with id -1 to the first device. This behaviour could lead to problems when using more than one Altera UART in a system. This patch changes the behaviour of the driver to scan for the next free id in case the id is -1. Because we cannot refer back to the assigned id in altera_uart_remove, the port instance needs to be stored in device drvdata. Reported-by: David Smoot <davidsmoot@gmail.com> Cc: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19TTY: serial_core, remove unused variableJiri Slaby
drivers/tty/serial/serial_core.c:1980:2: warning: Value stored to 'tty' is never read tty = port->tty; ^ ~~~~~~~~~ Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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