- 25 Mar, 2006 4 commits
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Thomas Gleixner authored
According to the specification the timevals must be validated and an errorcode -EINVAL returned in case the timevals are not in canonical form. This check was never done in Linux. The pre 2.6.16 code converted invalid timevals silently. Negative timeouts were converted by the timeval_to_jiffies conversion to the maximum timeout. hrtimers and the ktime_t operations expect timevals in canonical form. Otherwise random results might happen on 32 bits machines due to the optimized ktime_add/sub operations. Negative timeouts are treated as already expired. This might break applications which work on pre 2.6.16. To prevent random behaviour and API breakage the timevals are checked and invalid timevals sanitized in a simliar way as the pre 2.6.16 code did. Invalid timevals are reported with a per boot limited number of kernel messages so applications which use this misfeature can be corrected. After a grace period of one year the sanitizing should be replaced by a correct validation check. This is also documented in Documentation/feature-removal-schedule.txt The validation and sanitizing is done inside do_setitimer so all callers (sys_setitimer, compat_sys_setitimer, osf_setitimer) are catched. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Thomas Gleixner authored
alarm() calls the kernel with an unsigend int timeout in seconds. The value is stored in the tv_sec field of a struct timeval to setup the itimer. The tv_sec field of struct timeval is of type long, which causes the tv_sec value to be negative on 32 bit machines if seconds > INT_MAX. Before the hrtimer merge (pre 2.6.16) such a negative value was converted to the maximum jiffies timeout by the timeval_to_jiffies conversion. It's not clear whether this was intended or just happened to be done by the timeval_to_jiffies code. hrtimers expect a timeval in canonical form and treat a negative timeout as already expired. This breaks the legitimate usage of alarm() with a timeout value > INT_MAX seconds. For 32 bit machines it is therefor necessary to limit the internal seconds value to avoid API breakage. Instead of doing this in all implementations of sys_alarm the duplicated sys_alarm code is moved into a common function in itimer.c Signed-off-by:
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Andrew Morton authored
I seem to have lost this hunk in yesterday's patch. It brings the coming-online CPU's softlockup timer up to date so we don't get false-positive tripups during CPU hot-add. Signed-off-by:
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Andrey Panin authored
Attached patch fixes invalid pointer arithmetic in DMI code to make onboard device discovery working again. akpm: bug has been present since dmi_find_device() was added in 2.6.14. Affects ipmi only (I think) - the symptoms weren't described. akpm: changed to use pointer arithmetic rather than open-coded sizeof. Signed-off-by:
Andrey Panin <pazke@donpac.ru> Cc: Corey Minyard <minyard@acm.org> Cc: <stable@kernel.org> Signed-off-by:
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- 24 Mar, 2006 36 commits
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Horms authored
net: ne2k.c won't compile if pci_clone_list is const f71e1309 which (amongst other things) made pci_clone_list in ne2k-pci.c const causes the following compile error. This patch reverses that portion of that changeset drivers/net/ne2k-pci.c:123: error: pci_clone_list causes a section type conflict ~/ gcc --version gcc (GCC) 4.0.3 (Debian 4.0.3-1) ~/ dpkg gcc-4.0 | grep Version Version: 4.0.3-1 Signed-Off-By: Horms <horms@verge.net.au ne2k-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) cee0890cc97247b6a9decd94f5dc0719ac8f0b1b Signed-off-by:
Jeff Garzik <jeff@garzik.org>
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Andrew Victor authored
This patch adds support for the Ethernet controller integrated in the Atmel AT91RM9200 SoC processor. Changes since the previous submission (01/02/2006) are: - Make use of the clk.h clock infrastructure. - The multicast hash function is not crc32. [Patch by Pedro Perez] Signed-off-by:
Andrew Victor <andrew@sanpeople.com> Signed-off-by:
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Linus Torvalds authored
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [PATCH] libata: Remove dependence on host_set->dev for SAS [PATCH] libata: ata_scsi_ioctl cleanup [PATCH] libata: ata_scsi_queuecmd cleanup [libata] export ata_dev_pair; trim trailing whitespace [PATCH] libata: add ata_dev_pair helper [PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE. [PATCH] libata: make ata_set_mode() responsible for failure handling [PATCH] libata: use ata_dev_disable() in ata_bus_probe() [PATCH] libata: implement ata_dev_disable() [PATCH] libata: check if port is disabled after internal command [PATCH] libata: make per-dev transfer mode limits per-dev [PATCH] libata: add per-dev pio/mwdma/udma_mask [PATCH] libata: implement ata_unpack_xfermask() [libata] Move some bmdma-specific code to libata-bmdma.c [libata sata_uli] kill scr_addr abuse [libata sata_nv] eliminate duplicate codepaths with iomap [libata sata_nv] cleanups: convert #defines to enums; remove in-file history [libata sata_sil24] cleanups: use pci_iomap(), kzalloc()
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Andrew Morton authored
uevent_seqnum and uevent_helper are only defined if CONFIG_HOTPLUG=y, CONFIG_NET=n. (I stole this back from Greg's tree - it makes allnoconfig work). Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Davi Arnaut authored
Copies user-space string with strndup_user() and moves the type string duplication code to a function (thus fixing a wrong check on the length of the type.) Signed-off-by:
Davi Arnaut <davi.arnaut@gmail.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by:
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Davi Arnaut authored
Change hand-coded userspace string copying to strndup_user. Signed-off-by:
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Davi Arnaut authored
This patch series creates a strndup_user() function to easy copying C strings from userspace. Also we avoid common pitfalls like userspace modifying the final \0 after the strlen_user(). Signed-off-by:
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Ingo Molnar authored
Make the softlockup detector purely timer-interrupt driven, removing softirq-context (timer) dependencies. This means that if the softlockup watchdog triggers, it has truly observed a longer than 10 seconds scheduling delay of a SCHED_FIFO prio 99 task. (the patch also turns off the softlockup detector during the initial bootup phase and does small style fixes) Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Sergey Vlasov authored
If the change of personality does not lead to change of exec domain, __set_personality() returned without releasing the module reference acquired by lookup_exec_domain(). Signed-off-by:
Sergey Vlasov <vsu@altlinux.ru> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
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Glauber de Oliveira Costa authored
In filesystems with the meta block group flag on, ext3_bg_num_gdb() fails to report the correct number of blocks used to store the group descriptor backups in a given group. It happens because meta_bg follows a different logic from the original ext3 backup placement in groups multiples of 3, 5 and 7. Signed-off-by:
Glauber de Oliveira Costa <glommer@br.ibm.com> Cc: Andreas Dilger <adilger@clusterfs.com> Cc: "Stephen C. Tweedie" <sct@redhat.com> Cc: Alex Tomas <alex@clusterfs.com> Signed-off-by:
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Andrew Morton authored
Document the fact that setrlimit(RLIMIT_CPU) doesn't return error codes when it should. I don't think we can fix this without a 2.7.x.. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ulrich Weigand <uweigand@de.ibm.com> Cc: Cliff Wickman <cpw@sgi.com> Signed-off-by:
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Andrew Morton authored
At present the kernel doesn't honour an attempt to set RLIMIT_CPU to zero seconds. But the spec says it should, and that's what 2.4.x does. Fixing this for real would involve some complexity (such as adding a new it-has-been-set flag to the task_struct, and testing that everwhere, instead of overloading the value of it_prof_expires). Given that a 2.4 kernel won't actually send the signal until one second has expired anyway, let's just handle this case by treating the caller's zero-seconds as one second. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ulrich Weigand <uweigand@de.ibm.com> Cc: Cliff Wickman <cpw@sgi.com> Acked-by:
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Andrew Morton authored
- Whitespace cleanups - Make that expression comprehensible. There's a potential logic change here: we do the "is it_prof_expires equal to zero" test after converting it to seconds, rather than doing the comparison between raw cputime_t's. But given that it's in units of seconds anyway, that shouldn't change anything. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ulrich Weigand <uweigand@de.ibm.com> Cc: Cliff Wickman <cpw@sgi.com> Signed-off-by:
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Christoph Hellwig authored
Drivers have no business looking at the task list and thus using this lock. The only possibly modular users left are: arch/ia64/kernel/mca.c drivers/edac/edac_mc.c fs/binfmt_elf.c which I'll send out fixes for soon. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Alan Cox authored
- Remove more unused headers - Remove various typedefs - Correct type of PaddrP (physical addresses should be ulong) - Kill use of bcopy - More printk cleanups - Kill true/false - Clean up direct access to pci BARs Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Alan Cox authored
- Remove more unused headers - Remove various typedefs - Correct type of PaddrP (physical addresses should be ulong) - Kill use of bcopy - More printk cleanups - Kill true/false - Clean up direct access to pci BARs Signed-off-by:
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Alan Cox authored
Final polish. There is no more save_flags/cli type locking left. We also no longer use the pcicopy function and file so they can go. Signed-off-by:
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Alan Cox authored
Third large chunk of code cleanup. The split between this and #3 and #4 is fairly arbitary and due to the message length limit on the list. These patches continue the process of ripping out macros and typedefs while cleaning up lots of 32bit assumptions. Several inlines for compatibility also get removed and that causes a lot of noise. Signed-off-by:
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Alan Cox authored
Second large chunk of code cleanup. The split between this and #3 and #4 is fairly arbitary and due to the message length limit on the list. These patches continue the process of ripping out macros and typedefs while cleaning up lots of 32bit assumptions. Several inlines for compatibility also get removed and that causes a lot of noise. Signed-off-by:
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Alan Cox authored
First large chunk of code cleanup. The split between this and #3 and #4 is fairly arbitary and due to the message length limit on the list. These patches continue the process of ripping out macros and typedefs while cleaning up lots of 32bit assumptions. Several inlines for compatibility also get removed and that causes a lot of noise. Signed-off-by:
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Alan Cox authored
More header cleanups, strip out typedefs and remove cruft. There are a lot of magic macros that can go and also a great deal of abuse of volatile that is not needed any more as this patch set cleans up the misuse of pointer access to ISA and PCI space. It now builds cleanly on 64bit, although there is more work left to do Signed-off-by:
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Alan Cox authored
After the indent we can now clean up unused code, and fix all myriad cases that don't use readb/writeb properly. Signed-off-by:
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Alan Cox authored
This is the result of indent -kr -i8 -bri0 -l255 Signed-off-by:
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Alan Cox authored
Strip some of the typedef mess out Remove a small subset of unused defines and the like. Signed-off-by:
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Takashi Iwai authored
Fixes for annoying gcc-4.1 compile warnings "value computed not used". Simply cast to void. (akpm: Linus will go ballistic...) Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Christoph Hellwig authored
Announce that the kernel_thread export will be removed in half a year, after all it's users have been converted to the kthread_ API, which I plan to do over the next month. Signed-off-by:
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Kumar Gala authored
In some embedded systems the IDE hardware interface may only support 16-bit or smaller accesses. Allow the interface to specify if this is the case and don't allow the drive or user to override the setting. Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Acked-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Adrian Bunk authored
On architectures like i386, the "Multimedia Capabilities Port drivers" menu is visible, but it can't be visited since it contains nothing usable for !ARCH_SA1100. This patch therefore shows this menu only on ARCH_SA1100. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Kyle McMartin authored
If we don't want sys_newfstatat because __ARCH_WANT_STAT64 is defined, then we certainly don't want compat_sys_newfstatat either. Signed-off-by:
Grant Grundler <grundler@parisc-linux.org> Signed-off-by:
Kyle McMartin <kyle@parisc-linux.org> Signed-off-by:
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John Z. Bohach authored
It appears that console_setup() code only gets compiled into the kernel if CONFIG_PRINTK is enabled. One detrimental side-effect of this is that serial8250_console_setup() never gets invoked when CONFIG_PRINTK is not set, resulting in baud rate not being read/parsed from command line (i.e. console=ttyS0,115200n8 is ignored, at least the baud rate part...) Attached patch moves console_setup() code from inside #ifdef CONFIG_PRINTK to outside (in printk.c), removing dependence on said config. option. Signed-off-by:
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Nico Schottelius authored
I today booted the first time my embedded device using Linux 2.6.15.2, which was booted by pxelinux, which then bootet itself from the nfsroot. This went pretty fine, but when I was reading through Documentation/nfsroot.txt I saw that there are some more modern versions available of loading the kernel and passing parameters. Signed-off-by:
Nico Schottelius <nico-kernel@schottelius.org> Signed-off-by:
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Pierre Ossman authored
Driver for the Secure Digital Host Controller Interface specification. Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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Pierre Ossman authored
Class code and register definitions for the Secure Digital Host Controller standard. Signed-off-by:
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Andrew Morton authored
No need to duplicate all that code. Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Andrew Morton authored
Pull the guts out of do_fsync() - we can use it elsewhere. Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Andrew Morton authored
msync() does a strange thing. Essentially: vma = find_vma(); for ( ; ; ) { if (!vma) return -ENOMEM; ... vma = vma->vm_next; } so an msync() request which starts within or before a valid VMA and which ends within or beyond the final VMA will incorrectly return -ENOMEM. Fix. Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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