- 11 Dec, 2009 33 commits
-
-
Alan Cox authored
Add the POSIX block for carrier Linux TIOCMIWAIT functionality is still lacking from the driver. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Running the current code through checkpatch shows a few bits of noise mostly but not entirely from before the changes. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Switching between two non standard baud rates fails because of the cflag test. Do as we did elsewhere and just kill the "optimisation". Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Gets us proper tty semantics, removes some code and fixes up a few corner case races (hangup during open etc) Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
When we move to the tty_port logic the port mutex will protect open v close v hangup. Move to this first in the existing open code so we have a bisection point. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
The tty can go away underneath us, so we must refcount it. Do the naïve implementation initially. We will worry about startup shortly. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Nicolas Pitre authored
Now... testing reveals that the very first patch "sdio_uart: use tty_port" causes a segmentation fault in sdio_uart_open(): Unable to handle kernel NULL pointer dereference at virtual address 00000084 pgd = dfb44000 [00000084] *pgd=1fb99031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] PREEMPT last sysfs file: /sys/devices/platform/mvsdio/mmc_host/mmc0/mmc0:f111/uevent Modules linked in: CPU: 0 Not tainted (2.6.32-rc5-next-20091102-00001-gb36eae9 #10) PC is at sdio_uart_open+0x204/0x2cc [...] Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Add a tty_port object to the sdio uart. For the moment just begin using the tty field of the port, as this is the critical one to clean up. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Move the HUCPL handling from the end of close_port_start to the beginning of close_port_end. What this actually does is change the ordering from port shutdown port->dtr_rts to port->dtr_rts port shutdown Some hardware drops the physical connection on shutdown so we must perform the port operations before the shutdown. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Sukadev Bhattiprolu authored
devpts_get_tty() assumes that the inode passed in is associated with a valid pty. But if the only reference to the pty is via a bind-mount, the inode passed to devpts_get_tty() while valid, would refer to a pty that no longer exists. With a lot of debug effort, Grzegorz Nosek developed a small program (see below) to reproduce a crash on recent kernels. This crash is a regression introduced by the commit: commit 527b3e47 Author: Sukadev Bhattiprolu <sukadev@us.ibm.com> Date: Mon Oct 13 10:43:08 2008 +0100 To fix, ensure that the dentry associated with the inode has not yet been deleted/unhashed by devpts_pty_kill(). See also: https://lists.linux-foundation.org/pipermail/containers/2009-July/019273.html tty-bug.c: #define _GNU_SOURCE #include <fcntl.h> #include <sched.h> #include <stdlib.h> #include <sys/mount.h> #include <sys/signal.h> #include <unistd.h> #include <stdio.h> #include <linux/fs.h> void dummy(int sig) { } static int child(void *unused) { int fd; signal(SIGINT, dummy); signal(SIGHUP, dummy); pause(); /* cheesy synchronisation to wait for /dev/pts/0 to appear */ mount("/dev/pts/0", "/dev/console", NULL, MS_BIND, NULL); sleep(2); fd = open("/dev/console", O_RDWR); dup(0); dup(0); write(1, "Hello world!\n", sizeof("Hello world!\n")-1); return 0; } int main(void) { pid_t pid; char *stack; stack = malloc(16384); pid = clone(child, stack+16384, CLONE_NEWNS|SIGCHLD, NULL); open("/dev/ptmx", O_RDWR|O_NOCTTY|O_NONBLOCK); unlockpt(fd); grantpt(fd); sleep(2); kill(pid, SIGHUP); sleep(1); return 0; /* exit before child opens /dev/console */ } Reported-by:
Grzegorz Nosek <root@localdomain.pl> Signed-off-by:
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by:
Serge Hallyn <serue@us.ibm.com> Cc: stable <stable@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Ian Jackson authored
Do not read IIR in serial8250_start_tx when UART_BUG_TXEN Reading the IIR clears some oustanding interrupts so it is not safe. Instead, simply transmit immediately if the buffer is empty without regard to IIR. Signed-off-by:
Ian Jackson <ian.jackson@eu.citrix.com> Reviewed-by:
Markus Armbruster <armbru@redhat.com> Reviewed-by:
Jiri Kosina <jkosina@suse.cz> Cc: Alan Cox <alan@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Tilman Schmidt authored
A small addition to the ldisc method descriptions. Signed-off-by:
Tilman Schmidt <tilman@imap.cc> Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Acked-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Uwe Kleine-König authored
Intel(R) PXA27x Processor Family Specification Update (Nov 2005) says: E75. UART: Baud rate may not be programmed correctly on back-to-back writes. Problem: When programming the Divisor Latch registers, Low and High (DLL and DLH), with back-to-back writes, the second register write may not take effect. The result is an incorrect baud rate. Workaround: After programming the first Divisor Latch register, read and verify it before programming the second Divisor Latch register. This was hit when changing the baud rate from 115200 to 9600 while receiving characters at 9600 Bd. And fixed indention of some comments nearby. Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by:
Wolfram Sang <w.sang@pengutronix.de> Acked-by:
Marc Kleine-Budde <mkl@pengutronix.de> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Mike Rapoport <mike@compulab.co.il> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
André Goddard Rosa authored
Signed-off-by:
André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
André Goddard Rosa authored
Signed-off-by:
André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
André Goddard Rosa authored
If kzalloc() or alloc_tty_driver() fails, we call: put_tty_driver(normal = NULL). Then: put_tty_driver -> tty_driver_kref_put -> kref_put(&NULL->kref, ...) Signed-off-by:
André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Opticon now takes the right mutex to check the port status but the status check is done wrongly for the modern serial code, so fix it. Signed-off-by:
Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
The tty port has a port mutex used for all the port related locking so we don't need the one in the USB serial layer any more. Signed-off-by:
Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
As Alan Stern pointed out - now we have tty_port_open the shutdown method and locking allow us to whack the other bits into the full helper methods and provide a shutdown op which the tty port code will synchronize with setup for us. Signed-off-by:
Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Mind the hoover wire... Signed-off-by:
Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
For the moment this just moves the USB logic over and fixes the 'what if we open and hangup at the same time' race noticed by Oliver Neukum. Signed-off-by:
Alan Cox <alan@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
Fairly trivial as the BKL push down into the methods has already been done. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alan Cox authored
The ESP driver has been marked broken for years. It's an old ISA device that clearly nobody cares about any more. Remove it Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitao authored
Adding EEH handlers for the serial jsm driver. This patch adds the PCI error handlers and also register them to be called when a error is detected. Signed-off-by:
Breno Leitao <leitao@linux.vnet.ibm.com> Acked-by:
Scott Kilau <scottk@digi.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitão authored
Currently there is a field in the jsm_board structure to cont the number of interrupt that the card recevived, but it's not working properly when the IRQ line is shared, and also nowhere else this field is used. So, This patch is removing it. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Cc: Scott Kilau <Scott.Kilau@digi.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitão authored
Currently the jsm_channel->ch_wopen field is defined and never used. So, this patch removes it. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Cc: Scott Kilau <Scott.Kilau@digi.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitão authored
Currently the field jsm_channel->ch_cpstime is defined but never used, so this patch removes it. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Cc: Scott Kilau <Scott.Kilau@digi.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitão authored
Currently the field jsm_channel->ch_old_baud is not used, just assigned in a lot of places but never used. This patches removes this field. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Cc: Scott Kilau <scottk@digi.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitão authored
Currently the ch_custom_speed field exists but is never used, so, this patch removes it. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Cc: Scott Kilau <scottk@digi.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitão authored
Actually jsm displays "Device Added" 8 times (for a 8 port device). This silly patch just makes things more informative, showing the port (instead of the device) that was added. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Cc: Scott Kilau <scottk@digi.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
Breno Leitão authored
Currently jsm is showing the following message when loaded: IRQ 432/JSM: IRQF_DISABLED is not guaranteed on shared IRQs It's because the request_irq() is called using IRQF_DISABLED and IRQF_SHARED. Actually there is no need to use IRQF_DISABLED in this driver. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Cc: Scott Kilau <scottk@digi.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
-
- 10 Dec, 2009 7 commits
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Add debugobjects support
-
git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xenLinus Torvalds authored
* 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen: try harder to balloon up under memory pressure. Xen balloon: fix totalram_pages counting. xen: explicitly create/destroy stop_machine workqueues outside suspend/resume region. xen: improve error handling in do_suspend. xen: don't leak IRQs over suspend/resume. xen: call clock resume notifier on all CPUs xen: use iret for return from 64b kernel to 32b usermode xen: don't call dpm_resume_noirq() with interrupts disabled. xen: register runstate info for boot CPU early xen: register runstate on secondary CPUs xen: register timer interrupt with IRQF_TIMER xen: correctly restore pfn_to_mfn_list_list after resume xen: restore runstate_info even if !have_vcpu_info_placement xen: re-register runstate area earlier on resume. xen: wait up to 5 minutes for device connetion xen: improvement to wait_for_devices() xen: fix is_disconnected_device/exists_disconnected_device xen/xenbus: make DEVICE_ATTR()s static
-
git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xenLinus Torvalds authored
* 'xen/fbdev' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen pvfb: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers. fb-defio: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers. fb-defio: If FBINFO_VIRTFB is defined, do not set VM_IO flag. Fix toogle whether xenbus driver should be built as module or part of kernel.
-
git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlmLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm: dlm: always use GFP_NOFS
-
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (47 commits) ext4: Fix potential fiemap deadlock (mmap_sem vs. i_data_sem) ext4: Do not override ext2 or ext3 if built they are built as modules jbd2: Export jbd2_log_start_commit to fix ext4 build ext4: Fix insufficient checks in EXT4_IOC_MOVE_EXT ext4: Wait for proper transaction commit on fsync ext4: fix incorrect block reservation on quota transfer. ext4: quota macros cleanup ext4: ext4_get_reserved_space() must return bytes instead of blocks ext4: remove blocks from inode prealloc list on failure ext4: wait for log to commit when umounting ext4: Avoid data / filesystem corruption when write fails to copy data ext4: Use ext4 file system driver for ext2/ext3 file system mounts ext4: Return the PTR_ERR of the correct pointer in setup_new_group_blocks() jbd2: Add ENOMEM checking in and for jbd2_journal_write_metadata_buffer() ext4: remove unused parameter wbc from __ext4_journalled_writepage() ext4: remove encountered_congestion trace ext4: move_extent_per_page() cleanup ext4: initialize moved_len before calling ext4_move_extents() ext4: Fix double-free of blocks with EXT4_IOC_MOVE_EXT ext4: use ext4_data_block_valid() in ext4_free_blocks() ...
-
git://git.open-osd.org/linux-open-osdLinus Torvalds authored
* 'for-linus' of git://git.open-osd.org/linux-open-osd: exofs: Multi-device mirror support exofs: Move all operations to an io_engine exofs: move osd.c to ios.c exofs: statfs blocks is sectors not FS blocks exofs: Prints on mount and unmout exofs: refactor exofs_i_info initialization into common helper exofs: dbg-print less exofs: More sane debug print trivial: some small fixes in exofs documentation
-
git://git.infradead.org/ubifs-2.6Linus Torvalds authored
* git://git.infradead.org/ubifs-2.6: UBIFS: fix return code in check_leaf UBI: flush wl before clearing update marker MAINTAINERS: change e-mail of Artem Bityutskiy UBIFS: remove manual O_SYNC handling UBIFS: support mounting of UBI volume character devices UBI: Add ubi_open_volume_path
-