Michael Krufky [Tue, 6 May 2008 00:08:28 +0000 (21:08 -0300)]
V4L/DVB (7832): xc5000: MEDIA_TUNER_XC5000 must select FW_LOADER
Fix the following build error:
drivers/built-in.o: In function `xc_load_fw_and_init_tuner':
xc5000.c:(.text+0x2dacd): undefined reference to `request_firmware'
xc5000.c:(.text+0x2daf0): undefined reference to `release_firmware'
xc5000.c:(.text+0x2db85): undefined reference to `release_firmware'
make[1]: *** [.tmp_vmlinux1] Error 1
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Robert Schedel [Sat, 3 May 2008 15:58:36 +0000 (12:58 -0300)]
V4L/DVB (7830): dvb_ca_en50221: Fix High CPU load in 'top' due to budget_av slot polling
This change addresses kernel bug #10459: In kernel 2.6.25 the
budget_av driver polls for an CI slot in 100ms intervals (because no
interrupt solution for budget_av cards is feasible due to HW reasons).
If no CI/CAM is connected to the DVB card, polling times out only after 250ms.
This periodic polling leads to high CPU load.
The change increases the polling interval for empty slots from 100ms to 5s.
Intervals for remaining slot states (invalid, in progress, ready) are unchanged,
as they are either temporary conditions or no timeout should occur.
Signed-off-by: Robert Schedel <r.schedel@yahoo.de> Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michael Krufky [Fri, 2 May 2008 19:20:10 +0000 (16:20 -0300)]
V4L/DVB (7829): cx23885: remove remaining references to dvb-pll
The cx23885 driver used to use dvb-pll for LG-TDVS-H064F support on the
FusionHDTV5 Express. This has since been converted to use tuner-simple
instead, once digital tuning support was added to tuner-simple.
Since cx23885 no longer uses dvb-pll, remove the #include "dvb-pll.h",
and the DVB_PLL Kconfig selection.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
V4L/DVB (7810): soc_camera: mt9v022 and mt9m001 depend on I2C
Both mt9v022 and mt9m001 cameras are controlled over the I2C bus.
Respectively, their drivers require I2C to be built successfully.
Thanks to Ingo Molnar for reporting the build-breakage.
Linus Torvalds [Tue, 13 May 2008 17:48:35 +0000 (10:48 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
ACPI/PCI: another multiple _OSC memory leak fix
x86/PCI: X86_PAT & mprotect
PCI: enable nv_msi_ht_cap_quirk for ALi bridges
PCI: Make the intel-iommu_wait_op macro work when jiffies are not running
ACPI/PCI: handle multiple _OSC
ACPI/PCI: handle multiple _OSC
x86/PCI: fix broken ISA DMA
PCI ACPI: fix uninitialized variable in __pci_osc_support_set
Jeremy Higdon [Mon, 12 May 2008 06:17:03 +0000 (23:17 -0700)]
[SCSI] qla1280: Fix queue depth problem
The qla1280 driver was ANDing the output value of mailbox register
0 with (1 << target-number) to determine whether to enable queueing
on the target in question.
But mailbox register 0 has the status code for the mailbox command
(in this case, Set Target Parameters). Potential values are:
/*
* ISP mailbox command complete status codes
*/
So clearly that is in error. I can't think what the author of that
line was looking for in a mailbox register, so I just eliminated the
AND. flag is used later in the function, and I think that the later
usage was also wrong, though it was used to set values that aren't
used. Oh well, an overhaul of this driver is not what I want to do
now -- just a bugfix.
After the fix, I found that my disks were getting a queue depth of
255, which is far too many. Most SCSI disks are limited to 32 or
64. In any case, there's no point, queueing up a bunch of commands
to the adapter that will just result in queue full or starve other
targets from being issued commands due to running out of internal
memory. So I dropped default queue depth to 32 (from which 1 is
subtracted elsewhere, giving net of 31).
I tested with a Seagate ST336753LC, and results look good, so
I'm satisfied with this patch.
Signed-off-by: Jeremy Higdon <jeremy@sgi.com> Acked-by: Jes Sorensen <jes@sgi.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Kenji Kaneshige [Tue, 13 May 2008 07:48:50 +0000 (16:48 +0900)]
ACPI/PCI: another multiple _OSC memory leak fix
The acpi_query_osc() function can be called for the ACPI object that
doesn't have _OSC method. In this case, acpi_get_osc_data() would
allocate a useless memory region. To avoid this, we need to check the
existence of _OSC before calling acpi_get_osc_data() in acpi_query_osc().
Venki Pallipadi [Fri, 9 May 2008 20:05:19 +0000 (13:05 -0700)]
x86/PCI: X86_PAT & mprotect
Some versions of X used the mprotect workaround to change caching type from UC
to WB, so that it can then use mtrr to program WC for that region [1]. Change
the mmap of pci space through /sys or /proc interfaces from UC to UC_MINUS.
With this change, X will not need to use mprotect workaround to get WC type
since the MTRR mapping type will be honored.
The bug in mprotect that clobbers PAT bits is fixed in a follow on patch. So,
this X workaround will stop working as well.
Björn Krombholz [Sun, 11 May 2008 22:24:27 +0000 (00:24 +0200)]
PCI: enable nv_msi_ht_cap_quirk for ALi bridges
This applies the NVidia MSI enabled flag for HT capable devices quirk
to ALi bridges as well.
As described in more detail in http://bugzilla.kernel.org/show_bug.cgi?id=10667
this is required for my board which is using an nForce 3 250Gb chipset with an
ALi M1695 northbridge.
It fixes a regression introduced in 2.6.24 that made the internal NIC of the
board unusable (MSI initialisation of the NIC but disabled MSI on the
northbridge devices.
Signed-off-by: Björn Krombholz <fox.box@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
mark gross [Mon, 12 May 2008 20:41:57 +0000 (13:41 -0700)]
PCI: Make the intel-iommu_wait_op macro work when jiffies are not running
The following patch changes the intel-iommu.c code to use the TSC
instead of jiffies for detecting bad DMAR functionality. Some systems
with bad bios's have been seen to hang in early boot spinning in the
IOMMU_WAIT_IO macro. This patch will replace the infinite loop with a call to
panic.
Signed-off-by: Mark Gross <mgross@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Kenji Kaneshige [Mon, 12 May 2008 13:55:45 +0000 (22:55 +0900)]
ACPI/PCI: handle multiple _OSC
The pci_osc_control_set() function can be called for the ACPI object
that doesn't have _OSC method. In this case, acpi_get_osc_data() would
allocate a useless memory region. To avoid this, we need to check the
existence of _OSC before calling acpi_get_osc_data(). Here is a patch
to fix this problem in pci_osc_control_set.
Shaohua Li [Mon, 12 May 2008 02:48:10 +0000 (10:48 +0800)]
ACPI/PCI: handle multiple _OSC
There is an IA64 system here which have two pci root bridges with _OSC.
One _OSC disables SHPC control bit but the other not. Below patch makes
_OSC data per-device instead of one global, otherwise linux takes both
root bridges don't support SHPC.
Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Takashi Iwai [Fri, 9 May 2008 06:06:55 +0000 (08:06 +0200)]
x86/PCI: fix broken ISA DMA
Rene Herman reported:
> commit 8779f2fc3b84ebb6c5181fb13d702e9944c16069
>
> "x86: don't try to allocate from DMA zone at first"
>
> breaks all of ISA DMA. Or all of ALSA ISA DMA at least. All
> ISA soundcards are silent following that commit -- no error
> messages, everything appears fine, just silence.
That patch is buggy. We had an implicit assumption that
dev = NULL for ISA devices that require 24bit DMA.
The recent work on x86 dma_alloc_coherent() breaks the ISA DMA buffer
allocation, which is represented by "dev = NULL" and requires 24bit
DMA implicitly.
Kenji Kaneshige [Thu, 8 May 2008 05:37:25 +0000 (14:37 +0900)]
PCI ACPI: fix uninitialized variable in __pci_osc_support_set
Fix uninitialized variable in __pci_osc_support_set().
If the ACPI namespace doesn't have any device object corresponding to
the specified hid, 'retval' in __pci_osc_support_set() is not changed
by the acpi_query_osc() callback. Since 'retval' is not initizlized in
the current implementation, the contents of 'retval' is undefined in
this case. This causes a mis-handling of ctrlset_buf[OSC_SUPPORT_TYPE]
and will cause an unexpected result in the subsequent
pci_osc_control_set() call as a result.
fbcon still was not doing the right thing (read: continued to do old
behavior). fbcon_clear() seems to clear the new line (e.g. where your new
prompt appears after doing echo -en "\e[42mfoo\n"), while scr_memsetw clears
the previous one only (where "foo" appears). So just temporarily set the
video_erase_char to the scrl_erase_char so that fbcon_clear does the right
thing.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
vc->vc_scrl_erase_char was not updated when fbcon switches between
256- and 512-glyph fonts.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
rtc: m41t80: include <linux/kernel.h> for printk()
The driver uses printk(), but does not include <linux/kernel.h> -- add it.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexander Bigga <ab@mycable.de> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
RTC/watchdog: M41T80: fix a potential use of unitialized data
Watchdog handlers within the driver make use of "save_client" -- make sure it
has been initalized before the handlers are registered.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexander Bigga <ab@mycable.de> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jean Delvare [Mon, 12 May 2008 21:02:33 +0000 (14:02 -0700)]
Fix misuses of bdevname()
bdevname() fills the buffer that it is given as a parameter, so calling
strcpy() or snprintf() on the returned value is redundant (and probably not
guaranteed to work - I don't think strcpy and snprintf support overlapping
buffers.)
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Stephen Tweedie <sct@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Miklos Szeredi [Mon, 12 May 2008 21:02:32 +0000 (14:02 -0700)]
fuse: add flag to turn on big writes
Prior to 2.6.26 fuse only supported single page write requests. In theory all
fuse filesystem should be able support bigger than 4k writes, as there's
nothing in the API to prevent it. Unfortunately there's a known case in
NTFS-3G where big writes cause filesystem corruption. There could also be
other filesystems, where the lack of testing with big write requests would
result in bugs.
To prevent such problems on a kernel upgrade, disable big writes by default,
but let filesystems set a flag to turn it on.
Joakim Tjernlund [Mon, 12 May 2008 21:02:30 +0000 (14:02 -0700)]
spi_mpc83xx: much improved driver
The current driver may cause glitches on SPI CLK line since one must disable
the SPI controller before changing any HW settings. Fix this by implementing
a local spi_transfer function that won't change speed and/or word size while
CS is active.
While doing that heavy lifting a few other issues were addressed too:
- Make word size 16 and 32 work too.
- Honor bits_per_word and speed_hz in spi transaction.
- Optimize the common path.
This also stops using the "bitbang" framework (except for a few constants).
[Roel Kluin <12o3l@tiscali.nl>: "irq" needs to be signed] Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Jackson [Mon, 12 May 2008 21:02:29 +0000 (14:02 -0700)]
cpumask: remove bitmap_scnprintf_len and cpumask_scnprintf_len
They aren't used. They were briefly used as part of some other patches to
provide an alternative format for displaying some /proc and /sys cpumasks.
They probably should have been removed when those other patches were dropped,
in favor of a different solution.
Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Bert Wesarg" <bert.wesarg@googlemail.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The input argument to rtc_time_to_tm() is unsigned as well as are members of
the output structure. However signed arithmetic is used within for
calculations leading to incorrect results for input values outside the signed
positive range. If this happens the time of day returned is out of range.
Found the problem when fiddling with the RTC and the driver where year was set
to an unexpectedly large value like 2070, e.g.:
Eric Sesterhenn [Mon, 12 May 2008 21:02:21 +0000 (14:02 -0700)]
Fix hfsplus oops on image without extents
Fix an oops with a corrupted hfs+ image.
See http://bugzilla.kernel.org/show_bug.cgi?id=10548 for details.
Problem is that we call hfs_btree_open() from hfsplus_fill_super() to set
HFSPLUS_SB(sb).[ext_tree|cat_tree] Both trees are still NULL at this moment.
If hfs_btree_open() fails for any reason it calls iput() on the page, which
gets to hfsplus_releasepage() which tries to access HFSPLUS_SB(sb).* which is
still NULL and oopses while dereferencing it.
[akpm@linux-foundation.org: build fix] Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bjorn Helgaas [Mon, 12 May 2008 21:02:18 +0000 (14:02 -0700)]
PNP: set IRQ index in sysfs "set irq" interface
We have to set the ISAPNP register index when setting an IRQ via the sysfs
interface. We already do it for IO, MEM, and DMA resources; I just missed the
IRQ one.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robert P. J. Day [Mon, 12 May 2008 21:02:17 +0000 (14:02 -0700)]
mn10300: replace deprecated "TOPDIR" with newer "srctree"
This would appear to be the last reference to TOPDIR in the entire tree, after
which i'm guessing that variable can be dropped.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: David Howells <dhowells@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Julia Lawall [Mon, 12 May 2008 21:02:16 +0000 (14:02 -0700)]
drivers/video/pnx4008: eliminate double free
The function framebuffer_release just calls kfree, so calling kfree
subsequently on the same argument represents a double free. The comments with
the definition of framebuffer_release in drivers/video/fbsysfs.c suggest that
a more elaborate definition of this function is planned, such that the
splitting up of framebuffer_release and kfree as done in the second instance
might someday make sense, but it does not make sense now.
This was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)
Darrick J. Wong [Mon, 12 May 2008 21:02:13 +0000 (14:02 -0700)]
adt7473: minor documentation update
Add a sentence about when fan speed increases to maximum.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Serge E. Hallyn [Mon, 12 May 2008 21:02:13 +0000 (14:02 -0700)]
capabilities: add bounding set to /proc/self/status
There is currently no way to query the bounding set of another task. As there
appears to be no security reason not to, and as Michael Kerrisk points out the
following valid reasons to do so exist:
* consistency (I can see all of the other per-thread/process sets in
/proc/.../status)
* debugging -- I could imagine that it would make the job of debugging an
application that uses capabilities a little simpler.
this patch adds the bounding set to /proc/self/status right after the
effective set.
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Andrew G. Morgan <morgan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Mon, 12 May 2008 21:02:12 +0000 (14:02 -0700)]
md: fix raid5 'repair' operations
commit bd2ab67030e9116f1e4aae1289220255412b37fd "md: close a livelock window
in handle_parity_checks5" introduced a bug in handling 'repair' operations.
After a repair operation completes we clear the state bits tracking this
operation. However, they are cleared too early and this results in the code
deciding to re-run the parity check operation. Since we have done the repair
in memory the second check does not find a mismatch and thus does not do a
writeback.
Krzysztof Helt [Mon, 12 May 2008 21:02:11 +0000 (14:02 -0700)]
tridentfb: improve clock setting accuracy
Improve clock calculation precision (to kHz from MHz) and removes parameter
field vclk from the tridentfb_par structure.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Krzysztof Helt [Mon, 12 May 2008 21:02:09 +0000 (14:02 -0700)]
tridentfb: remove misplaced enable_mmio()
Remove redundant enable_mmio() call as the mmio mode is enabled in the probe
function earlier.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Mon, 12 May 2008 21:02:08 +0000 (14:02 -0700)]
quota: don't call sync_fs() from vfs_quota_off() when there's no quota turn off
Sometimes, vfs_quota_off() is called on a partially set up super block (for
example when fill_super() fails for some reason). In such cases we cannot
call ->sync_fs() because it can Oops because of not properly filled in super
block. So in case we find there's not quota to turn off, we just skip
everything and return which fixes the above problem.
[akpm@linux-foundation.org: fxi tpyo] Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
m68knommu: ColdFire add support for kernel preemption (missing chunk)
As the subject says this patch adds the support for kernel preemption on
m68knommu Coldfire. I thing the same changes could be applied to 68360 &
68328 but since I don't have the HW, I don't touch it. Kconfig enables the
preemption item only on coldfire.
This is a missing chunk from Sebastian's original patch that I lost from the
first submission.
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dean Nelson [Mon, 12 May 2008 21:02:03 +0000 (14:02 -0700)]
drivers/misc/sgi-xp: replace partid_t with a short
In preparation for supporting greater than 64 partitions replace partid_t by
short in drivers/misc/sgi-xp.
Signed-off-by: Dean Nelson <dcn@sgi.com> Acked-by: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dean Nelson [Mon, 12 May 2008 21:02:02 +0000 (14:02 -0700)]
drivers/misc/sgi-xp: clean up return values
Make XP return values more generic to XP and not so tied to XPC by changing
enum xpc_retval to xp_retval, along with changing return value prefixes from
xpc to xp. Also, cleanup a comment block that referenced some of these return
values as well as the handling of BTE related return values.
Signed-off-by: Dean Nelson <dcn@sgi.com> Acked-by: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric BENARD [Mon, 12 May 2008 21:02:01 +0000 (14:02 -0700)]
spi: pxa2xx_spi clock resume bugfix
There is a typo in pxa2xx_spi.c, comment says "Enable the SSP clock", code
says: clk_disable ... so after resume, the SSP is dead.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Ned Forrester <nforrester@whoi.edu> Cc: Stephen Street <stephen@streetfiresound.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:02:00 +0000 (14:02 -0700)]
uml: track and make up lost ticks
Alarm delivery could be noticably late in the !CONFIG_NOHZ case because lost
ticks weren't being taken into account. This is now treated more carefully,
with the time between ticks being calculated and the appropriate number of
ticks delivered to the timekeeping system.
Cc: Nix <nix@esperi.org.uk> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:59 +0000 (14:01 -0700)]
uml: style fixes in the random driver
Give random.c a style workover while I'm changing it.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:58 +0000 (14:01 -0700)]
uml: random driver fixes
The random driver would essentially hang if the host's /dev/random returned
-EAGAIN. There was a test of need_resched followed by a schedule inside the
loop, but that didn't help and it's the wrong way to work anyway.
The right way is to ask for an interrupt when there is input available from
the host and handle it then rather than polling.
Now, when the host's /dev/random returns -EAGAIN, the driver asks for a wakeup
when there's randomness available again and sleeps. The interrupt routine
just wakes up whatever processes are sleeping on host_read_wait.
There is an atomic_t, host_sleep_count, which counts the number of processes
waiting for randomness. When this reaches zero, the interrupt is disabled.
An added complication is that async I/O notification was only recently added
to /dev/random (by me), so essentially all hosts will lack it. So, we use the
sigio workaround here, which is to have a separate thread poll on the
descriptor and send an interrupt when there is input on it. This mechanism is
activated when a process gets -EAGAIN (activating this multiple times is
harmless, if a bit wasteful) and deactivated by the last process still
waiting.
The module name was changed from "random" to "hw_random" in order for udev to
recognize it.
The sigio workaround needed some changes. sigio_broken was added for cases
when we know that async notification doesn't work. This is now called from
maybe_sigio_broken, which deals with pts devices.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:57 +0000 (14:01 -0700)]
uml: physical memory shouldn't include initial stack
The top of physical memory should be below the initial process stack, not the
top of the address space, at least for as long as the stack isn't known to the
kernel VM system and appropriately reserved.
Cc: "Christopher S. Aker" <caker@theshore.net> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jiri Olsa [Mon, 12 May 2008 21:01:56 +0000 (14:01 -0700)]
uml: use DIV_ROUND_UP
I just saw similar patches in the janitor kernel's list, and spotted place it
fits.
Signed-off-by: Jiri Olsa <olsajiri@gmail.com> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robert P. J. Day [Mon, 12 May 2008 21:01:55 +0000 (14:01 -0700)]
uml: fix CONFIG_RAW dependencies
Add the BLOCK dependency for RAW_DRIVER, to match what's in
drivers/char/Kconfig. Also, while we're there, update the alleged
obsolesence of RAW_DRIVER since it doesn't seem to be going away any
time soon.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:54 +0000 (14:01 -0700)]
uml: use __SPIN_LOCK_UNLOCKED
From: Robert P. J. Day <rpjday@crashcourse.ca>
Use newer, non-deprecated __SPIN_LOCK_UNLOCKED macro.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:53 +0000 (14:01 -0700)]
uml: fix bad NTP interaction with clock
UML's supposed nanosecond clock interacts badly with NTP when NTP
decides that the clock has drifted ahead and needs to be slowed down.
Slowing down the clock is done by decrementing the cycle-to-nanosecond
multiplier, which is 1. Decrementing that gives you 0 and time is
stopped.
This is fixed by switching to a microsecond clock, with a multiplier
of 1000.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:52 +0000 (14:01 -0700)]
uml: remove unused header
From: Adrian Bunk <bunk@kernel.org>
This patch removes the unused and broken (the normal asm/keyboard.h
files no longer exists) include/asm-um/keyboard.h
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:52 +0000 (14:01 -0700)]
uml: fix build when SLOB is enabled
Reintroduce uml_kmalloc for the benefit of UML libc code. The
previous tactic of declaring __kmalloc so it could be called directly
from the libc side of the house turned out to be getting too intimate
with slab, and it doesn't work with slob.
So, the uml_kmalloc wrapper is back. It calls kmalloc or whatever
that translates into, and libc code calls it.
kfree is left alone since that still works, leaving a somewhat
inconsistent API.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:50 +0000 (14:01 -0700)]
uml: tidy ptrace interface
Tidy the ptrace interface code. Removed a bunch of unused macros.
Started converting register sets from arrays of longs to structures.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:50 +0000 (14:01 -0700)]
uml: move hppfs_kern.c to hppfs.c
There's no reason for the _kern in hppfs_kern.c, so move it to hppfs.c.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:49 +0000 (14:01 -0700)]
uml: hppfs fixes
hppfs tidying and fixes noticed during hch's get_inode work -
style fixes
a copy_to_user got its return value checked
hppfs_write no longer fiddles file->f_pos because it gets and
returns pos in its arguments
hppfs_delete_inode dputs the underlyng procfs dentry stored in
its private data and mntputs the vfsmnt stashed in s_fs_info
hppfs_put_super no longer needs to mntput the s_fs_info, so it
no longer needs to exist
hppfs_readlink and hppfs_follow_link were doing a bunch of stuff
with a struct file which they didn't use
there is now a ->permission which calls generic_permission
get_inode was always returning 0 for some reason - it now
returns an inode if nothing bad happened
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:48 +0000 (14:01 -0700)]
uml: style fixes
A few random style fixes.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jeff Dike [Mon, 12 May 2008 21:01:47 +0000 (14:01 -0700)]
uml: redo host capability detection and disabling
Redo how host capabilities are recorded at startup and disabled on the
command line.
There are now explicit variables saying what's been disabled by the
command line rather than the implicitness of the have_* variable being
zero. The capability variables now start at zero and are set to one
as their capabilities are found to be present on the host.
Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Zabel [Tue, 13 May 2008 12:03:40 +0000 (14:03 +0200)]
[ALSA] ASoC: build fix for snd_soc_info_bool_ext
I suspect that snd_ctl_boolean_mono should have been
snd_ctl_boolean_mono_info instead. This fixes the build for magician.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
When the hardware wavetable synthesizer of an Creative SB Audigy or SB
Live! card (with emu10k chip) receives the MIDI SOFT_PEADAL-press event
(?? 67 127) the appropriate voice is attenuted. Unfortunately when the
pedal is released (event ?? 67 0) the voice does not get it's original
volume again.
Boolean MIDI controls should interpret 0..63 as false and 64..127 as true.
Thanks to Clemens Ladisch for review and correction.
Original patch from "Uwe Kraeger" <uwe_debbug@arcor.de>
Submitted to http://bugs.debian.org/474312
Signed-off-by: maximilian attems <max@stro.at> Cc: uwe_debbug@arcor.de Cc: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Linus Torvalds [Mon, 12 May 2008 20:34:13 +0000 (13:34 -0700)]
Make 'cond_resched()' nullification depend on PREEMPT_BKL
Because it's not correct with a non-preemptable BKL and just causes
PREEMPT kernels to have longer latencies than non-PREEMPT ones (which is
obviously not the point of it at all).
Of course, that config option actually got removed as an option earlier,
so for now this basically disables it entirely, but if BKL preemption is
ever resurrected it will be a meaningful optimization. And in the
meantime, it at least documents the intent of the code, while not doing
the wrong thing.
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
[CIFS] don't allow demultiplex thread to exit until kthread_stop is called
[CIFS] when not using unix extensions, check for and set ATTR_READONLY on create and mkdir
[CIFS] add local struct inode pointer to cifs_setattr
[CIFS] cifs_find_tcp_session cleanup
Linus Torvalds [Mon, 12 May 2008 17:14:22 +0000 (10:14 -0700)]
Fix up 'need_resched()' definition
We should not go through the task pointer to get at the thread info,
since it's usually cheaper to just access the thread info directly.
So don't make the code look up 'current', when we can just use the
thread info accessor functions directly. This generally avoids one
level of indirection and tends to work better together with code that
also looks at other thread flags (eg preempt_count).
Stick with the original pattern, but make sure the 32-bit code
actually comes first!
Reported by Al Viro.
Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk>
...
CC arch/mips/emma2rh/markeins/setup.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/mips/emma2rh/markeins/setup.c:79: error: conflicting types for 'clock'
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/clocksource.h:96: error: previous declaration of 'clock' was here
make[2]: *** [arch/mips/emma2rh/markeins/setup.o] Error 1
<-- snip -->
[Ralf: reformated to 80 colums after the fix and marked emma2rh_clock as
__initdata]
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
projects / karo-tx-linux.git / log