- 25 Aug, 2004 37 commits
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David S. Miller authored
Ok, here are the sparc64 and sparc32 versions. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Andi Kleen authored
Add the signal race changes to x86-64 to make it compile again. Didn't merge the more pointless changes from i386. Also remove the special SA_ONESHOT handling, doesn't seem to be needed anymore. From: Mikael Pettersson <mikpe@csd.uu.se> The signal-race-fixes patch in 2.6.8-rc2-mm1 appears to have broken x86-64's ia32 emulation. When forcing a SIGSEGV the old code updated "*ka", where ka was a pointer to current's k_sigaction for SIGSEGV. Now "ka_copy" points to a copy of that structure, so assigning "*ka_copy" doesn't do what we want. Instead do the assignment via current->... just like the normal signal delivery code does. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Mikael Pettersson authored
2.6.8-rc2-mm1 reintroduced the signal-race-fixes patch for i386, x86_64, s390, and ia64, breaking all other archs. The patch below updates ppc, following the pattern of i386. Compiled & runtime tested. No observable breakage. Signed-off-by: Mikael Pettersson <mikpe@csd.uu.se> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Martin Schwidefsky authored
Update s30 for the signal race fix From: Mikael Pettersson <mikpe@csd.uu.se> The signal-race-fixes patch in 2.6.8-rc2-mm1 appears to be a bit broken on s390. When forcing a SIGSEGV the old code updated "*ka", where ka was a pointer to current's k_sigaction for SIGSEGV. Now "ka_copy" points to a copy of that structure, so assigning "*ka_copy" doesn't do what we want. Instead do the assignment via current->... just like i386 and x86_64 do. Furthermore, the SA_ONESHOT handling wasn't deleted. That is now handled by generic code in the kernel. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Corey Minyard authored
The problem: In arch/i386/signal.c, in the do_signal() function, it calls get_signal_to_deliver() which returns the signal number to deliver (along with siginfo). get_signal_to_deliver() grabs and releases the lock, so the signal handler lock is not held in do_signal(). Then the do_signal() calls handle_signal(), which uses the signal number to extract the sa_handler, etc. Since no lock is held, it seems like another thread with the same signal handler set can come in and call sigaction(), it can change sa_handler between the call to get_signal_to_deliver() and fetching the value of sa_handler. If the sigaction() call set it to SIG_IGN, SIG_DFL, or some other fundamental change, that bad things can happen. The patch: You have to get the sigaction information that will be delivered while holding sighand->siglock in get_signal_to_deliver(). In 2.4, it can be fixed per-arch and requires no change to the arch-independent code because the arch fetches the signal with dequeue_signal() and does all the checking. The test app: The program below has three threads that share signal handlers. Thread 1 changes the signal handler for a signal from a handler to SIG_IGN and back. Thread 0 sends signals to thread 3, which just receives them. What I believe is happening is that thread 1 changes the signal handler in the process of thread 3 receiving the signal, between the time that thread 3 fetches the signal info using get_signal_to_deliver() and actually delivers the signal with handle_signal(). Although the program is obvously an extreme case, it seems like any time you set the handler value of a signal to SIG_IGN or SIG_DFL, you can have this happen. Changing signal attributes might also cause problems, although I am not so sure about that. (akpm: this test app segv'd on SMP within milliseconds for me) #include <signal.h> #include <stdio.h> #include <sched.h> char stack1[16384]; char stack2[16384]; void sighnd(int sig) { } int child1(void *data) { struct sigaction act; sigemptyset(&act.sa_mask); act.sa_flags = 0; for (;;) { act.sa_handler = sighnd; sigaction(45, &act, NULL); act.sa_handler = SIG_IGN; sigaction(45, &act, NULL); } } int child2(void *data) { for (;;) { sleep(100); } } int main(int argc, char *argv[]) { int pid1, pid2; signal(45, SIG_IGN); pid2 = clone(child2, stack2 + sizeof(stack2) - 8, CLONE_SIGHAND | CLONE_VM, NULL); pid1 = clone(child1, stack1 + sizeof(stack2) - 8, CLONE_SIGHAND | CLONE_VM, NULL); for (;;) { kill(pid2, 45); } } Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds authored
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Linus Torvalds authored
And don't accept UTF translations as the start of a control state either.
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Alexander Viro authored
MDA is ISA-only ;-)
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Alexander Viro authored
Several places did le16_to_cpup() on misaligned address, which blows on any little-endian platform that doesn't like misaligned reads.
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Alexander Viro authored
wrong type of return value.
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Alexander Viro authored
Fixed assumption that char is always unsigned
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Alexander Viro authored
Killed check_region(), fixed an old bug in ISA case (we checked the wrong region before claiming the right one - dumb typo back in 2.4.early)
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Alexander Viro authored
->sendfile() takes kernel pointer, not userland one.
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Alexander Viro authored
->ki_buf is always a userland pointer.
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Alexander Viro authored
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bk://kernel.bkbits.net/gregkh/linux/driver-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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bk://bk.arm.linux.org.uk/linux-2.6-pcmciaLinus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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bk://bk.arm.linux.org.uk/linux-2.6-rmkLinus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Russell King authored
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Russell King authored
Pointers are NULL not 0. Remove obviously unnecessary iBCS2 shm stuff... we're ARM after all.
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Tony Lindgren authored
Patch from Tony Lindgren This is an updated version of patch 2004/1 to optimize for immediate constant
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Lennert Buytenhek authored
Patch from Lennert Buytenhek Hi, gcc doesn't understand 80-bit floating point on the ARM currently, according to the kernel's Kconfig docs, but it would seem that the current extended double emulation code is broken for big endian platforms. So, this patch disables NWFPE_XP on big endian architectures, until someone comes round and fixes it. cheers, Lennert
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Lennert Buytenhek authored
Patch from Lennert Buytenhek Hi, I need the patch below (against 2.6.8-rc1-ds1) to make nwfpe properly emulate arithmetic with doubles on a big endian ARM platform. From reading the mailing list archives and from helpful comments I've received from people on this list, I gather that this has come up in the past, but it appears that Russell King was never really convinced as to why this patch is needed. I think I understand what's going on, and will try to explain. On little endian ARM, the double value 1.0 looks like this when stored in memory in FPA word ordering: bytes: 0x00 0x00 0xf0 0x3f 0x00 0x00 0x00 0x00 u32s: 0x3ff00000 0x00000000 u64: 0x000000003ff00000 On big endian, it looks like this: bytes: 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 0x00 u32s: 0x3ff00000 0x00000000 u64: 0x3ff0000000000000 It appears to be this way because once upon a time, somebody decided that the sub-words of a double will use native endian word ordering within themselves, but the two separate words will always be stored with the most significant one first. God knows why they did it this way, but they did. Anyway. The key observation is that nwfpe internally stores double values in the type 'float64', which is basically just a typedef for unsigned long long. It never accesses 'float64's on the byte level by casting pointers around or anything like that, it just uses direct u64 arithmetic primitives (add, shift, or, and) for float64 manipulations and that's it. So. For little endian platforms, 1.0 looks like: 0x00 0x00 0xf0 0x3f 0x00 0x00 0x00 0x00 But since nwfpe treats it as a u64, it wants it to look like: 0x00 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f So, that's why the current code swaps the words around when getting doubles from userspace and putting them back (see fpa11_cpdt.c, loadDouble and storeDouble.) On big endian, 1.0 looks like: 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 0x00 Since nwfpe treats it as a u64, it wants it to look like: 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 0x00 Hey! That's exactly the same. So in this case, it shouldn't be swapping the halves around. However, it currently does that swapping unconditionally, and that's why floating point emulation messes up. This is how I understand things -- hope it makes sense to other people too. cheers, Lennert
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Ben Dooks authored
Patch from Ben Dooks Fixes missing IRQ_TICK from RTC resources
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Ben Dooks authored
Patch from Ben Dooks Updated all arch/arm/mach-s3c2410/mach-XXX.c files to register default set of devices Added new board struct to keep this sort of info, as it isn't possible to register platform_devices until after the init_io functions have been called.
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Ben Dooks authored
Patch from Ben Dooks Added clock definition for watchdog, and fixed it so that clocks that cannot be enabled/disabled will be left alone. Fixed typo in naming of clocks when registering
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Russell King authored
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Russell King authored
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John Rose authored
The following patch implements a pci_remove_bus() that can be used by hotplug drivers for the removal of root buses. It also defines a release function that frees the device struct for pci_bus->bridge when a root bus class device is unregistered. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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François Romieu authored
The returned value can not be null. Yet its description suggests differently. From: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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Jean Delvare authored
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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Jean Delvare authored
This patch changes all the i2c chip drivers and documentation to use the name "cpu0_vid" instead of "in0_ref". The name "in0_ref" was an error in the first place as motherboard manufacturers may fail to follow the chip manufacturer's recommendation about which "in" channel to use for VCore monitoring. The new name leaves room for chips able to monitor more than 1 vid value, such as the LM93 and, to a lesser extent, the PC87360 family (all by National Semiconductor). These chips are typically designed for dual-CPU motherboards. This breaks the interface (obviously) so libsensors has been updated to support both names. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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Jean Delvare authored
This is needed for iBook2 owners to be able to use their ADM1030 hardware monitoring chip. Successfully tested by one user. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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Greg Kroah-Hartman authored
into kroah.com:/home/greg/linux/BK/driver-2.6
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bk://linux-dj.bkbits.net/cpufreqLinus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Greg Kroah-Hartman authored
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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Ian Campbell authored
Add support for a couple of BIOS ROM devices. The patch has been committed to the MTD CVS tree and adds entries to jedec_probe.c for AMD AM29F002T, Hyundai HY29F002T and Macronix MX29F002T parts. This version is slightly updated from the previous once since I accidentally added MANUFACTURER_MACRONIX when it already existed. I also moved the new definitions to go along with the alphabetical by manufacturer layout of the file. Signed-off-by: Ian Campbell <icampbell@arcom.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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- 24 Aug, 2004 3 commits
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Dave Jones authored
It's being passed a global everywhere, so it may as well directly reference it. Signed-off-by: Dave Jones <davej@redhat.com>
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Dave Jones authored
Signed-off-by: Dave Jones <davej@redhat.com>
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Dave Jones authored
Some daemons try to set the speed to the same speed we're currently running at. Detect that, and bail out early before we fiddle with registers and such. Signed-off-by: Dave Jones <davej@redhat.com>
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