linux/drivers/tty, branch v3.6

tty: serial: imx: don't reinit clock in imx_setup_ufcr()

2012-09-05T19:44:44Z

Remove the clock configuration from imx_setup_ufcr(). This isn't needed here and will cause garbage output if done. To be be sure that we only touch the bits we want (TXTL and RXTL) we have to mask out all other bits of the UFCR register. Add one non-existing bit macro for this, too (bit 6, DCEDTE on i.MX6). Signed-off-by: Dirk Behme CC: Shawn Guo CC: Sascha Hauer CC: Troy Kisky CC: Xinyu Chen Cc: stable Acked-by: Shawn Guo Signed-off-by: Greg Kroah-Hartman

tty: serial: imx: console write routing is unsafe on SMP

2012-09-05T19:44:44Z

The console feature's write routing is unsafe on SMP with the startup/shutdown call. There could be several consumers of the console * the kernel printk * the init process using /dev/kmsg to call printk to show log * shell, which open /dev/console and write with sys_write() The shell goes into the normal uart open/write routing, but the other two go into the console operations. The open routing calls imx serial startup, which will write USR1/2 register without any lock and critical with imx_console_write call. Add a spin_lock for startup/shutdown/console_write routing. This patch is a port from Freescale's Android kernel. Signed-off-by: Xinyu Chen Tested-by: Dirk Behme CC: Sascha Hauer Acked-by: Shawn Guo Cc: stable Signed-off-by: Greg Kroah-Hartman

pmac_zilog,kdb: Fix console poll hook to return instead of loop

2012-08-16T19:20:20Z

kdb <-> kgdb transitioning does not work properly with this UART driver because the get character routine loops indefinitely as opposed to returning NO_POLL_CHAR per the expectation of the KDB I/O driver API. The symptom is a kernel hang when trying to switch debug modes. Cc: Alan Cox Signed-off-by: Jason Wessel Signed-off-by: Greg Kroah-Hartman

serial: mxs-auart: fix the wrong RTS hardware flow control

2012-08-16T19:15:33Z

Without checking if the auart supports the hardware flow control or not, the old mxs_auart_set_mctrl() asserted the RTS pin blindly. This will causes the auart receives wrong data in the following case: The far-end has already started the write operation, and wait for the auart asserts the RTS pin. Then the auart starts the read operation, but mxs_auart_set_mctrl() may be called before we set the RTSCTS in the mxs_auart_settermios(). So the RTS pin is asserted in a wrong situation, and we get the wrong data in the end. This bug has been catched when I connect the mx23(DTE) to the mx53(DCE). This patch also replaces the AUART_CTRL2_RTS with AUART_CTRL2_RTSEN. We should use the real the hardware flow control, not the software-controled hardware flow control. Signed-off-by: Huang Shijie Signed-off-by: Greg Kroah-Hartman

serial: ifx6x60: fix paging fault on spi_register_driver

2012-08-10T20:19:31Z

[ 117.240866] BUG: unable to handle kernel paging request at 815b627c [ 117.240866] IP: [<813fe94b>] spi_register_driver+0xb/0x50 ... [ 117.240866] Call Trace: [ 117.240866] [<817de977>] ifx_spi_init+0xbe/0xf0 The root cause is, spi_register_driver() is trying to write into the passed *const* struct spi_driver. Signed-off-by: Fengguang Wu Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

serial: Change Kconfig entry for CLPS711X-target

2012-08-10T20:19:31Z

This trivial patch adds a short description for SERIAL_CLPS711X Kconfig entry, removes excess dependence on the ARM-platform (this is done globally for the platform), allows the driver to be compiled by default and removes unnecessary description about GRUB and LILO, because these bootloaders do not supported this platform. Signed-off-by: Alexander Shiyan Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

serial: sh-sci: fix compilation breakage, when DMA is enabled

2012-08-01T04:48:54Z

A recent commit: commit d6fa5a4e7ab605370fd6c982782f84ef2e6660e7 Author: Guennadi Liakhovetski serial: sh-sci: prepare for conversion to the shdma base library is not sufficient to update the sh-sci driver to the new shdma driver layout. This caused compilation breakage, when CONFIG_SERIAL_SH_SCI_DMA is enabled. This patch trivially fixes the problem by updating the DMA descriptor manipulation code. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Paul Mundt

Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

2012-08-01T02:07:42Z

Pull random subsystem patches from Ted Ts'o: "This patch series contains a major revamp of how we collect entropy from interrupts for /dev/random and /dev/urandom. The goal is to addresses weaknesses discussed in the paper "Mining your Ps and Qs: Detection of Widespread Weak Keys in Network Devices", by Nadia Heninger, Zakir Durumeric, Eric Wustrow, J. Alex Halderman, which will be published in the Proceedings of the 21st Usenix Security Symposium, August 2012. (See https://factorable.net for more information and an extended version of the paper.)" Fix up trivial conflicts due to nearby changes in drivers/{mfd/ab3100-core.c, usb/gadget/omap_udc.c} * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: (33 commits) random: mix in architectural randomness in extract_buf() dmi: Feed DMI table to /dev/random driver random: Add comment to random_initialize() random: final removal of IRQF_SAMPLE_RANDOM um: remove IRQF_SAMPLE_RANDOM which is now a no-op sparc/ldc: remove IRQF_SAMPLE_RANDOM which is now a no-op [ARM] pxa: remove IRQF_SAMPLE_RANDOM which is now a no-op board-palmz71: remove IRQF_SAMPLE_RANDOM which is now a no-op isp1301_omap: remove IRQF_SAMPLE_RANDOM which is now a no-op pxa25x_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op omap_udc: remove IRQF_SAMPLE_RANDOM which is now a no-op goku_udc: remove IRQF_SAMPLE_RANDOM which was commented out uartlite: remove IRQF_SAMPLE_RANDOM which is now a no-op drivers: hv: remove IRQF_SAMPLE_RANDOM which is now a no-op xen-blkfront: remove IRQF_SAMPLE_RANDOM which is now a no-op n2_crypto: remove IRQF_SAMPLE_RANDOM which is now a no-op pda_power: remove IRQF_SAMPLE_RANDOM which is now a no-op i2c-pmcmsp: remove IRQF_SAMPLE_RANDOM which is now a no-op input/serio/hp_sdc.c: remove IRQF_SAMPLE_RANDOM which is now a no-op mfd: remove IRQF_SAMPLE_RANDOM which is now a no-op ...

Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

2012-07-27T22:14:26Z

Pull ARM updates from Russell King: "First ARM push of this merge window, post me coming back from holiday. This is what has been in linux-next for the last few weeks. Not much to say which isn't described by the commit summaries." * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (32 commits) ARM: 7463/1: topology: Update cpu_power according to DT information ARM: 7462/1: topology: factorize the update of sibling masks ARM: 7461/1: topology: Add arch_scale_freq_power function ARM: 7456/1: ptrace: provide separate functions for tracing syscall {entry,exit} ARM: 7455/1: audit: move syscall auditing until after ptrace SIGTRAP handling ARM: 7454/1: entry: don't bother with syscall tracing on ret_from_fork path ARM: 7453/1: audit: only allow syscall auditing for pure EABI userspace ARM: 7452/1: delay: allow timer-based delay implementation to be selected ARM: 7451/1: arch timer: implement read_current_timer and get_cycles ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration ARM: 7447/1: rwlocks: remove unused branch labels from trylock routines ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process ARM: 7444/1: kernel: add arch-timer C3STOP feature ARM: 7460/1: remove asm/locks.h ARM: 7439/1: head.S: simplify initial page table mapping ARM: 7437/1: zImage: Allow DTB command line concatenation with ATAG_CMDLINE ARM: 7436/1: Do not map the vectors page as write-through on UP systems ...

Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus

2012-07-27T22:06:32Z