commits November 2009

commits@lists.open-mesh.org

1 participants
989 discussions

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit 88345411df1eb5a24272955a53856e001f960a06 Author: Magnus Damm <damm(a)opensource.se> Date: Mon Oct 26 10:08:55 2009 +0000 sh: rsk7203 CONFIG_MTD=n fix Fix the rsk7203 board code to build with CONFIG_MTD=n. Signed-off-by: Magnus Damm <damm(a)opensource.se> Signed-off-by: Paul Mundt <lethal(a)linux-sh.org> diff --git a/arch/sh/boards/mach-rsk/devices-rsk7203.c b/arch/sh/boards/mach-rsk/devices-rsk7203.c index 4af3a77..c37617e 100644 --- a/arch/sh/boards/mach-rsk/devices-rsk7203.c +++ b/arch/sh/boards/mach-rsk/devices-rsk7203.c @@ -11,10 +11,6 @@ #include <linux/types.h> #include <linux/platform_device.h> #include <linux/interrupt.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/partitions.h> -#include <linux/mtd/physmap.h> -#include <linux/mtd/map.h> #include <linux/smsc911x.h> #include <linux/gpio.h> #include <linux/leds.h> diff --git a/arch/sh/boards/mach-rsk/setup.c b/arch/sh/boards/mach-rsk/setup.c index af64d03..a5c0df7 100644 --- a/arch/sh/boards/mach-rsk/setup.c +++ b/arch/sh/boards/mach-rsk/setup.c @@ -15,14 +15,12 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <linux/mtd/physmap.h> +#ifdef CONFIG_MTD #include <linux/mtd/map.h> +#endif #include <asm/machvec.h> #include <asm/io.h> -static const char *probes[] = { "cmdlinepart", NULL }; - -static struct mtd_partition *parsed_partitions; - static struct mtd_partition rsk_partitions[] = { { .name = "Bootloader", @@ -41,6 +39,8 @@ static struct mtd_partition rsk_partitions[] = { }; static struct physmap_flash_data flash_data = { + .parts = rsk_partitions, + .nr_parts = ARRAY_SIZE(rsk_partitions), .width = 2, }; @@ -60,7 +60,8 @@ static struct platform_device flash_device = { }, }; -static struct mtd_info *flash_mtd; +#ifdef CONFIG_MTD +static const char *probes[] = { "cmdlinepart", NULL }; static struct map_info rsk_flash_map = { .name = "RSK+ Flash", @@ -68,6 +69,10 @@ static struct map_info rsk_flash_map = { .bankwidth = 2, }; +static struct mtd_info *flash_mtd; + +static struct mtd_partition *parsed_partitions; + static void __init set_mtd_partitions(void) { int nr_parts = 0; @@ -77,14 +82,14 @@ static void __init set_mtd_partitions(void) nr_parts = parse_mtd_partitions(flash_mtd, probes, &parsed_partitions, 0); /* If there is no partition table, used the hard coded table */ - if (nr_parts <= 0) { - flash_data.parts = rsk_partitions; - flash_data.nr_parts = ARRAY_SIZE(rsk_partitions); - } else { + if (nr_parts > 0) { flash_data.nr_parts = nr_parts; flash_data.parts = parsed_partitions; } } +#else +static inline void set_mtd_partitions(void) {} +#endif static struct platform_device *rsk_devices[] __initdata = { &flash_device, -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit 60339fad5c68c9c533cd14e67194ff8f727c41d9 Author: Matt Fleming <matt(a)console-pimps.org> Date: Sat Oct 24 18:56:57 2009 +0000 sh: Check for return_to_handler when unwinding the stack When CONFIG_FUNCTION_GRAPH_TRACER is enabled the function graph tracer may patch return addresses on the stack with the address of return_to_handler(). This really confuses the DWARF unwinder because it will try find the caller of return_to_handler(), not the caller of the real return address. So teach the DWARF unwinder how to find the real return address whenever it encounters return_to_handler(). This patch does not cope very well when multiple return addresses on the stack have been patched. To make it work properly it would require state to track how many return_to_handler()'s have been seen so that we'd know where to look in current->curr_ret_stack[]. So for now, instead of trying to handle this, just moan if more than one return address on the stack has been patched. Signed-off-by: Matt Fleming <matt(a)console-pimps.org> Signed-off-by: Paul Mundt <lethal(a)linux-sh.org> diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c index 03b3616..2d07084 100644 --- a/arch/sh/kernel/dwarf.c +++ b/arch/sh/kernel/dwarf.c @@ -20,6 +20,7 @@ #include <linux/list.h> #include <linux/mempool.h> #include <linux/mm.h> +#include <linux/ftrace.h> #include <asm/dwarf.h> #include <asm/unwinder.h> #include <asm/sections.h> @@ -557,6 +558,27 @@ struct dwarf_frame * dwarf_unwind_stack(unsigned long pc, if (!pc && !prev) pc = (unsigned long)current_text_addr(); +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + /* + * If our stack has been patched by the function graph tracer + * then we might see the address of return_to_handler() where we + * expected to find the real return address. + */ + if (pc == (unsigned long)&return_to_handler) { + int index = current->curr_ret_stack; + + /* + * We currently have no way of tracking how many + * return_to_handler()'s we've seen. If there is more + * than one patched return address on our stack, + * complain loudly. + */ + WARN_ON(index > 0); + + pc = current->ret_stack[index].ret; + } +#endif + frame = mempool_alloc(dwarf_frame_pool, GFP_ATOMIC); if (!frame) { printk(KERN_ERR "Unable to allocate a dwarf frame\n"); -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit c06e004c72aa0d1acbc239fb995aa3d823543a8a Author: Russell King <rmk+kernel(a)arm.linux.org.uk> Date: Sun Oct 25 22:36:10 2009 +0000 ARM: Use GFP_DMA only for masks _less_ than 32-bit We were using GFP_DMA for masks other than 0xffffffff, which is wrong when some masks are initialized to 0xffffffffffffffff. This caused such masks to obtain memory from the precious DMA pool. Signed-off-by: Russell King <rmk+kernel(a)arm.linux.org.uk> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index b30925f..b9590a7 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -205,7 +205,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, order = get_order(size); - if (mask != 0xffffffff) + if (mask < 0xffffffffULL) gfp |= GFP_DMA; page = alloc_pages(gfp, order); @@ -289,7 +289,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, if (!mask) goto error; - if (mask != 0xffffffff) + if (mask < 0xffffffffULL) gfp |= GFP_DMA; virt = kmalloc(size, gfp); if (!virt) -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit ba93483f8c997f1a3fc0a6677f41e8556ae3eba6 Author: Paul Mundt <lethal(a)linux-sh.org> Date: Mon Oct 26 09:58:31 2009 +0900 sh: __irq_entry annotate do_IRQ(). This adds an __irq_entry annotation for do_IRQ() so that the IRQ annotation in the function graph tracer works as advertized. We already have the IRQENTRY section wired up, so this is just a trivial addition to actually make use of it. Signed-off-by: Paul Mundt <lethal(a)linux-sh.org> diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c index 7cb933b..eac7da7 100644 --- a/arch/sh/kernel/irq.c +++ b/arch/sh/kernel/irq.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/kernel_stat.h> #include <linux/seq_file.h> +#include <linux/ftrace.h> #include <asm/processor.h> #include <asm/machvec.h> #include <asm/uaccess.h> @@ -106,7 +107,7 @@ static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly; static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly; #endif -asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs) +asmlinkage __irq_entry int do_IRQ(unsigned int irq, struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); #ifdef CONFIG_IRQSTACKS -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit 26fadd3672964596d33548490b9756014ae0f414 Author: Lubomir Rintel <lkundrak(a)v3.sk> Date: Thu Oct 22 11:58:37 2009 +0000 sh: Build fix: define more __movmem* symbols ERROR: "__movmemSI12" [net/unix/unix.ko] undefined! ERROR: "__movmemSI52" [net/ipv6/sit.ko] undefined! ERROR: "__movmemSI24" [net/ipv6/ipv6.ko] undefined! ERROR: "__movmemSI60" [net/ipv6/ipv6.ko] undefined! ERROR: "__movmemSI16" [net/ipv6/ipv6.ko] undefined! ERROR: "__movmemSI20" [net/ipv6/ipv6.ko] undefined! ERROR: "__movmemSI32" [net/ipv6/ipv6.ko] undefined! Signed-off-by: Lubomir Rintel <lkundrak(a)v3.sk> Signed-off-by: Paul Mundt <lethal(a)linux-sh.org> diff --git a/arch/sh/kernel/sh_ksyms_32.c b/arch/sh/kernel/sh_ksyms_32.c index 86c2704..444cce3 100644 --- a/arch/sh/kernel/sh_ksyms_32.c +++ b/arch/sh/kernel/sh_ksyms_32.c @@ -85,6 +85,20 @@ DECLARE_EXPORT(__movstr_i4_even); DECLARE_EXPORT(__movstr_i4_odd); DECLARE_EXPORT(__movstrSI12_i4); DECLARE_EXPORT(__movmem); +DECLARE_EXPORT(__movmemSI8); +DECLARE_EXPORT(__movmemSI12); +DECLARE_EXPORT(__movmemSI16); +DECLARE_EXPORT(__movmemSI20); +DECLARE_EXPORT(__movmemSI24); +DECLARE_EXPORT(__movmemSI28); +DECLARE_EXPORT(__movmemSI32); +DECLARE_EXPORT(__movmemSI36); +DECLARE_EXPORT(__movmemSI40); +DECLARE_EXPORT(__movmemSI44); +DECLARE_EXPORT(__movmemSI48); +DECLARE_EXPORT(__movmemSI52); +DECLARE_EXPORT(__movmemSI56); +DECLARE_EXPORT(__movmemSI60); DECLARE_EXPORT(__movmem_i4_even); DECLARE_EXPORT(__movmem_i4_odd); DECLARE_EXPORT(__movmemSI12_i4); -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit ce63e6bd0ac7eca242562ee07f518bacc8eaa5ce Author: Russell King <rmk+kernel(a)arm.linux.org.uk> Date: Sun Oct 25 22:42:38 2009 +0000 ARM: integrator: allow Integrator to be built with highmem This fixes Integrator builds with highmem enabled; we need to translate from 'struct page' to a DMA address, and this is not possible without __pfn_to_bus(). Signed-off-by: Russell King <rmk+kernel(a)arm.linux.org.uk> diff --git a/arch/arm/mach-integrator/include/mach/memory.h b/arch/arm/mach-integrator/include/mach/memory.h index 2b2e7a1..4891828 100644 --- a/arch/arm/mach-integrator/include/mach/memory.h +++ b/arch/arm/mach-integrator/include/mach/memory.h @@ -28,5 +28,6 @@ #define BUS_OFFSET UL(0x80000000) #define __virt_to_bus(x) ((x) - PAGE_OFFSET + BUS_OFFSET) #define __bus_to_virt(x) ((x) - BUS_OFFSET + PAGE_OFFSET) +#define __pfn_to_bus(x) (((x) << PAGE_SHIFT) + BUS_OFFSET) #endif -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit 84087126d50400789b44459cfc45721778e6ebb0 Author: Marti Raudsepp <marti(a)juffo.org> Date: Sat Oct 24 19:10:36 2009 +0300 perf tools: Fix compatibility with libelf 0.8 and autodetect The Makefile now automatically defines LIBELF_NO_MMAP when libelf 0.8.x is detected. libelf 0.8 is still maintained and some distributions such as Arch Linux use it instead of elfutils. Signed-off-by: Marti Raudsepp <marti(a)juffo.org> Cc: Lucas De Marchi <lucas.de.marchi(a)gmail.com> Cc: Peter Zijlstra <a.p.zijlstra(a)chello.nl> Cc: Paul Mackerras <paulus(a)samba.org> Cc: Frederic Weisbecker <fweisbec(a)gmail.com> Cc: Arnaldo Carvalho de Melo <acme(a)redhat.com> Cc: Arjan van de Ven <arjan(a)linux.intel.com> Cc: Mike Galbraith <efault(a)gmx.de> LKML-Reference: <1256400636.3007.16.camel@newn> Signed-off-by: Ingo Molnar <mingo(a)elte.hu> diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 742a32e..46e877b 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -422,7 +422,11 @@ ifeq ($(uname_S),Darwin) PTHREAD_LIBS = endif -ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y) +ifeq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y) + ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y) + BASIC_CFLAGS += -DLIBELF_NO_MMAP + endif +else msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel and glibc-dev[el]); endif diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 47ea060..226f44a 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -413,7 +413,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, int v) if (fd < 0) goto out; - elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); + elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); if (elf == NULL) goto out_close; @@ -533,7 +533,7 @@ static int dso__load_sym(struct dso *self, int fd, const char *name, Elf *elf; int nr = 0, kernel = !strcmp("[kernel]", self->name); - elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); + elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); if (elf == NULL) { if (v) fprintf(stderr, "%s: cannot read %s ELF file.\n", @@ -675,7 +675,7 @@ static char *dso__read_build_id(struct dso *self, int v) if (fd < 0) goto out; - elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); + elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); if (elf == NULL) { if (v) fprintf(stderr, "%s: cannot read %s ELF file.\n", diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 6e84907..829da9e 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -27,6 +27,16 @@ static inline char *bfd_demangle(void __used *v, const char __used *c, #endif #endif +/* + * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP; + * for newer versions we can use mmap to reduce memory usage: + */ +#ifdef LIBELF_NO_MMAP +# define PERF_ELF_C_READ_MMAP ELF_C_READ +#else +# define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP +#endif + #ifndef DMGL_PARAMS #define DMGL_PARAMS (1 << 0) /* Include function args */ #define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */ -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit b214f11fb92713fbb07d8c1f62dd1aa8077b56c9 Author: Janusz Krzysztofik <jkrzyszt(a)tis.icnet.pl> Date: Sat Oct 24 00:06:48 2009 +0200 ASoC: Amstrad Delta: add info about the line discipline requirement to Kconfig help text I thought it could be usefull to add some information on how to get the device fully supported by loading a line discipline on the modem line. Signed-off-by: Janusz Krzysztofik <jkrzyszt(a)tis.icnet.pl> Signed-off-by: Mark Brown <broonie(a)opensource.wolfsonmicro.com> diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig index 2dee983..653a362 100644 --- a/sound/soc/omap/Kconfig +++ b/sound/soc/omap/Kconfig @@ -21,7 +21,18 @@ config SND_OMAP_SOC_AMS_DELTA select SND_OMAP_SOC_MCBSP select SND_SOC_CX20442 help - Say Y if you want to add support for SoC audio on Amstrad Delta. + Say Y if you want to add support for SoC audio device connected to + a handset and a speakerphone found on Amstrad E3 (Delta) videophone. + + Note that in order to get those devices fully supported, you have to + build the kernel with standard serial port driver included and + configured for at least 4 ports. Then, from userspace, you must load + a line discipline #19 on the modem (ttyS3) serial line. The simplest + way to achieve this is to install util-linux-ng and use the included + ldattach utility. This can be started automatically from udev, + a simple rule like this one should do the trick (it does for me): + ACTION=="add", KERNEL=="controlC0", \ + RUN+="/usr/sbin/ldattach 19 /dev/ttyS3" config SND_OMAP_SOC_OSK5912 tristate "SoC Audio support for omap osk5912" -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit 94efb72328afa29ea5fd93e48ed17489afcdaa12 Author: Komuro <komurojun-mbn(a)nifty.com> Date: Sat Oct 24 08:07:39 2009 +0900 pcmcia: do not load the pd6729 driver if io_base is NULL The CL-PD6729 chip in some docking station is not initialized properly under Linux. In that case, do not load the pd6729 driver. [Dominik Brodowski <linux(a)dominikbrodowski.net>: spelling fixes, check for NULL not 0] Signed-off-by: Komuro <komurojun-mbn(a)nifty.com> Signed-off-by: Dominik Brodowski <linux(a)dominikbrodowski.net> diff --git a/drivers/pcmcia/pd6729.c b/drivers/pcmcia/pd6729.c index 1c39d34..70a3346 100644 --- a/drivers/pcmcia/pd6729.c +++ b/drivers/pcmcia/pd6729.c @@ -641,6 +641,12 @@ static int __devinit pd6729_pci_probe(struct pci_dev *dev, if ((ret = pci_enable_device(dev))) goto err_out_free_mem; + if (!pci_resource_start(dev, 0)) { + printk(KERN_INFO "pd6729: refusing to load the driver " + "as the io_base is 0.\n"); + goto err_out_free_mem; + } + printk(KERN_INFO "pd6729: Cirrus PD6729 PCI to PCMCIA Bridge " "at 0x%llx on irq %d\n", (unsigned long long)pci_resource_start(dev, 0), dev->irq); -- batman-adv

1 0

[git] batman-adv branch, linux, updated. 31791c214a69092cb9feb5a6198a695a21fa0b24
by postmaster＠open-mesh.net 09 Nov '09

09 Nov '09

The following commit has been merged in the linux branch: commit ab72b00734ae4d0b5ff273a0f6c7abeaa3713c76 Author: Russell King <rmk+kernel(a)arm.linux.org.uk> Date: Sun Oct 25 15:39:37 2009 +0000 ARM: Fix signal restart issues with NX and OABI compat The signal restarting code was placed on the user stack when OABI compatibility is enabled. Unfortunately, with an EABI NX executable, this results in an attempt to run code from the non-executable stack, which segfaults the application. Fix this by placing the code in the vectors page, along side the signal return code, and directing the application to that code. Reported-by: saeed bishara <saeed.bishara(a)gmail.com> Tested-by: saeed bishara <saeed.bishara(a)gmail.com> Signed-off-by: Russell King <rmk+kernel(a)arm.linux.org.uk> diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 1423a34..2a573d4 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -1,7 +1,7 @@ /* * linux/arch/arm/kernel/signal.c * - * Copyright (C) 1995-2002 Russell King + * Copyright (C) 1995-2009 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -29,6 +29,7 @@ */ #define SWI_SYS_SIGRETURN (0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE)) #define SWI_SYS_RT_SIGRETURN (0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE)) +#define SWI_SYS_RESTART (0xef000000|__NR_restart_syscall|__NR_OABI_SYSCALL_BASE) /* * With EABI, the syscall number has to be loaded into r7. @@ -49,6 +50,18 @@ const unsigned long sigreturn_codes[7] = { }; /* + * Either we support OABI only, or we have EABI with the OABI + * compat layer enabled. In the later case we don't know if + * user space is EABI or not, and if not we must not clobber r7. + * Always using the OABI syscall solves that issue and works for + * all those cases. + */ +const unsigned long syscall_restart_code[2] = { + SWI_SYS_RESTART, /* swi __NR_restart_syscall */ + 0xe49df004, /* ldr pc, [sp], #4 */ +}; + +/* * atomically swap in the new signal mask, and wait for a signal. */ asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask) @@ -645,32 +658,12 @@ static void do_signal(struct pt_regs *regs, int syscall) regs->ARM_pc -= 4; #else u32 __user *usp; - u32 swival = __NR_restart_syscall; - regs->ARM_sp -= 12; + regs->ARM_sp -= 4; usp = (u32 __user *)regs->ARM_sp; - /* - * Either we supports OABI only, or we have - * EABI with the OABI compat layer enabled. - * In the later case we don't know if user - * space is EABI or not, and if not we must - * not clobber r7. Always using the OABI - * syscall solves that issue and works for - * all those cases. - */ - swival = swival - __NR_SYSCALL_BASE + __NR_OABI_SYSCALL_BASE; - - put_user(regs->ARM_pc, &usp[0]); - /* swi __NR_restart_syscall */ - put_user(0xef000000 | swival, &usp[1]); - /* ldr pc, [sp], #12 */ - put_user(0xe49df00c, &usp[2]); - - flush_icache_range((unsigned long)usp, - (unsigned long)(usp + 3)); - - regs->ARM_pc = regs->ARM_sp + 4; + put_user(regs->ARM_pc, usp); + regs->ARM_pc = KERN_RESTART_CODE; #endif } } diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h index 27beece..6fcfe83 100644 --- a/arch/arm/kernel/signal.h +++ b/arch/arm/kernel/signal.h @@ -1,12 +1,14 @@ /* * linux/arch/arm/kernel/signal.h * - * Copyright (C) 2005 Russell King. + * Copyright (C) 2005-2009 Russell King. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #define KERN_SIGRETURN_CODE (CONFIG_VECTORS_BASE + 0x00000500) +#define KERN_RESTART_CODE (KERN_SIGRETURN_CODE + sizeof(sigreturn_codes)) extern const unsigned long sigreturn_codes[7]; +extern const unsigned long syscall_restart_code[2]; diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index f838f36..95718a6 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -1,7 +1,7 @@ /* * linux/arch/arm/kernel/traps.c * - * Copyright (C) 1995-2002 Russell King + * Copyright (C) 1995-2009 Russell King * Fragments that appear the same as linux/arch/i386/kernel/traps.c (C) Linus Torvalds * * This program is free software; you can redistribute it and/or modify @@ -751,6 +751,8 @@ void __init early_trap_init(void) */ memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes, sizeof(sigreturn_codes)); + memcpy((void *)KERN_RESTART_CODE, syscall_restart_code, + sizeof(syscall_restart_code)); flush_icache_range(vectors, vectors + PAGE_SIZE); modify_domain(DOMAIN_USER, DOMAIN_CLIENT); -- batman-adv

1 0

← Newer
1
...
39
40
41
42
43
44
45
...
99
Older →

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

commits November 2009