11 files changed, 215 insertions, 60 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index adb05de40e24..ce00c570459d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -879,6 +879,8 @@ endif
 
 source "drivers/scsi/Kconfig"
 
+source "drivers/ata/Kconfig"
+
 source "drivers/md/Kconfig"
 
 source "drivers/message/fusion/Kconfig"
diff --git a/arch/arm/mach-ebsa110/io.c b/arch/arm/mach-ebsa110/io.c
index c648bfb676a1..db38afb2aa88 100644
--- a/arch/arm/mach-ebsa110/io.c
+++ b/arch/arm/mach-ebsa110/io.c
@@ -28,7 +28,7 @@
 #include <asm/io.h>
 #include <asm/page.h>
 
-static void __iomem *__isamem_convert_addr(void __iomem *addr)
+static void __iomem *__isamem_convert_addr(const volatile void __iomem *addr)
 {
         u32 ret, a = (u32 __force) addr;
 
@@ -63,7 +63,7 @@ static void __iomem *__isamem_convert_addr(void __iomem *addr)
 /*
  * read[bwl] and write[bwl]
  */
-u8 __readb(void __iomem *addr)
+u8 __readb(const volatile void __iomem *addr)
 {
         void __iomem *a = __isamem_convert_addr(addr);
         u32 ret;
@@ -75,7 +75,7 @@ u8 __readb(void __iomem *addr)
         return ret;
 }
 
-u16 __readw(void __iomem *addr)
+u16 __readw(const volatile void __iomem *addr)
 {
         void __iomem *a = __isamem_convert_addr(addr);
 
@@ -85,7 +85,7 @@ u16 __readw(void __iomem *addr)
         return __raw_readw(a);
 }
 
-u32 __readl(void __iomem *addr)
+u32 __readl(const volatile void __iomem *addr)
 {
         void __iomem *a = __isamem_convert_addr(addr);
         u32 ret;
diff --git a/arch/arm/mm/consistent.c b/arch/arm/mm/consistent.c
index 50e6b6bfb2e2..b797217e82be 100644
--- a/arch/arm/mm/consistent.c
+++ b/arch/arm/mm/consistent.c
@@ -476,6 +476,9 @@ core_initcall(consistent_init);
 
 /*
  * Make an area consistent for devices.
+ * Note: Drivers should NOT use this function directly, as it will break
+ * platforms with CONFIG_DMABOUNCE.
+ * Use the driver DMA support - see dma-mapping.h (dma_sync_*)
  */
 void consistent_sync(void *vaddr, size_t size, int direction)
 {
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index d0ddb4a768a5..3a8afd47feaa 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -19,6 +19,7 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 #include <linux/init.h>
+#include <linux/hardirq.h>
 
 #include <asm/asm.h>
 #include <asm/bootinfo.h>
@@ -242,6 +243,25 @@ void sb1_flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsign
         __attribute__((alias("local_sb1_flush_cache_page")));
 #endif
 
+#ifdef CONFIG_SMP
+static void sb1_flush_cache_data_page_ipi(void *info)
+{
+        unsigned long start = (unsigned long)info;
+
+        __sb1_writeback_inv_dcache_range(start, start + PAGE_SIZE);
+}
+
+static void sb1_flush_cache_data_page(unsigned long addr)
+{
+        if (in_atomic())
+                __sb1_writeback_inv_dcache_range(addr, addr + PAGE_SIZE);
+        else
+                on_each_cpu(sb1_flush_cache_data_page_ipi, (void *) addr, 1, 1);
+}
+#else
+void sb1_flush_cache_data_page(unsigned long)
+        __attribute__((alias("local_sb1_flush_cache_data_page")));
+#endif
 
 /*
  * Invalidate all caches on this CPU
@@ -481,7 +501,7 @@ void sb1_cache_init(void)
 
         flush_cache_sigtramp = sb1_flush_cache_sigtramp;
         local_flush_data_cache_page = (void *) sb1_nop;
-        flush_data_cache_page = (void *) sb1_nop;
+        flush_data_cache_page = sb1_flush_cache_data_page;
 
         /* Full flush */
         __flush_cache_all = sb1___flush_cache_all;
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index a1b5e4b16151..46a24de36fec 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -1014,48 +1014,6 @@ void __init time_init(void)
         set_dec(tb_ticks_per_jiffy);
 }
 
-#ifdef CONFIG_RTC_CLASS
-static int set_rtc_class_time(struct rtc_time *tm)
-{
-        int err;
-        struct class_device *class_dev =
-                rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
-
-        if (class_dev == NULL)
-                return -ENODEV;
-
-        err = rtc_set_time(class_dev, tm);
-
-        rtc_class_close(class_dev);
-
-        return 0;
-}
-
-static void get_rtc_class_time(struct rtc_time *tm)
-{
-        int err;
-        struct class_device *class_dev =
-                rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
-
-        if (class_dev == NULL)
-                return;
-
-        err = rtc_read_time(class_dev, tm);
-
-        rtc_class_close(class_dev);
-
-        return;
-}
-
-int __init rtc_class_hookup(void)
-{
-        ppc_md.get_rtc_time = get_rtc_class_time;
-        ppc_md.set_rtc_time = set_rtc_class_time;
-
-        return 0;
-}
-#endif /* CONFIG_RTC_CLASS */
-
 
 #define FEBRUARY        2
 #define STARTOFTIME     1970
diff --git a/arch/powerpc/platforms/83xx/mpc832x_mds.c b/arch/powerpc/platforms/83xx/mpc832x_mds.c
index 54dea9d42dc9..a43ac71ab740 100644
--- a/arch/powerpc/platforms/83xx/mpc832x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc832x_mds.c
@@ -24,6 +24,7 @@
 #include <linux/root_dev.h>
 #include <linux/initrd.h>
 
+#include <asm/of_device.h>
 #include <asm/system.h>
 #include <asm/atomic.h>
 #include <asm/time.h>
@@ -136,6 +137,24 @@ static void __init mpc832x_sys_setup_arch(void)
 #endif
 }
 
+static int __init mpc832x_declare_of_platform_devices(void)
+{
+        struct device_node *np;
+
+        for (np = NULL; (np = of_find_compatible_node(np, "network",
+                                        "ucc_geth")) != NULL;) {
+                int ucc_num;
+                char bus_id[BUS_ID_SIZE];
+
+                ucc_num = *((uint *) get_property(np, "device-id", NULL)) - 1;
+                snprintf(bus_id, BUS_ID_SIZE, "ucc_geth.%u", ucc_num);
+                of_platform_device_create(np, bus_id, NULL);
+        }
+
+        return 0;
+}
+device_initcall(mpc832x_declare_of_platform_devices);
+
 void __init mpc832x_sys_init_IRQ(void)
 {
 
diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c
index 5446bab08eca..e2bcaaf6b329 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_itx.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c
@@ -108,10 +108,6 @@ static int __init mpc834x_itx_probe(void)
         return 1;
 }
 
-#ifdef CONFIG_RTC_CLASS
-late_initcall(rtc_class_hookup);
-#endif
-
 define_machine(mpc834x_itx) {
         .name                   = "MPC834x ITX",
         .probe                  = mpc834x_itx_probe,
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 6516f6dca96d..13a86bd383d3 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -233,6 +233,8 @@ extern unsigned long __do_user_copy(void *to, const void *from, int n,
                                     void (*op)(void *to, const void *from,
                                                int n), int *faulted_out);
 
+/* execvp.c */
+extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
 /* helper.c */
 extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
                       unsigned long *stack_out);
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile
index b4183929b32c..2f8c79464015 100644
--- a/arch/um/os-Linux/Makefile
+++ b/arch/um/os-Linux/Makefile
@@ -3,8 +3,8 @@
 # Licensed under the GPL
 #
 
-obj-y = aio.o elf_aux.o file.o helper.o irq.o main.o mem.o process.o sigio.o \
-        signal.o start_up.o time.o trap.o tty.o uaccess.o umid.o tls.o \
+obj-y = aio.o elf_aux.o execvp.o file.o helper.o irq.o main.o mem.o process.o \
+        sigio.o signal.o start_up.o time.o trap.o tty.o uaccess.o umid.o tls.o \
         user_syms.o util.o drivers/ sys-$(SUBARCH)/
 
 obj-$(CONFIG_MODE_SKAS) += skas/
@@ -15,9 +15,9 @@ user-objs-$(CONFIG_MODE_TT) += tt.o
 obj-$(CONFIG_TTY_LOG) += tty_log.o
 user-objs-$(CONFIG_TTY_LOG) += tty_log.o
 
-USER_OBJS := $(user-objs-y) aio.o elf_aux.o file.o helper.o irq.o main.o mem.o \
-        process.o sigio.o signal.o start_up.o time.o trap.o tty.o tls.o \
-        uaccess.o umid.o util.o
+USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \
+        main.o mem.o process.o sigio.o signal.o start_up.o time.o trap.o tty.o \
+        tls.o uaccess.o umid.o util.o
 
 CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH)
 
diff --git a/arch/um/os-Linux/execvp.c b/arch/um/os-Linux/execvp.c
new file mode 100644
index 000000000000..66e583a4031b
--- /dev/null
+++ b/arch/um/os-Linux/execvp.c
@@ -0,0 +1,149 @@
+/* Copyright (C) 2006 by Paolo Giarrusso - modified from glibc' execvp.c.
+   Original copyright notice follows:
+
+   Copyright (C) 1991,92,1995-99,2002,2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+#include <unistd.h>
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+
+#ifndef TEST
+#include "um_malloc.h"
+#else
+#include <stdio.h>
+#define um_kmalloc malloc
+#endif
+#include "os.h"
+
+/* Execute FILE, searching in the `PATH' environment variable if it contains
+   no slashes, with arguments ARGV and environment from `environ'.  */
+int execvp_noalloc(char *buf, const char *file, char *const argv[])
+{
+        if (*file == '\0') {
+                return -ENOENT;
+        }
+
+        if (strchr (file, '/') != NULL) {
+                /* Don't search when it contains a slash.  */
+                execv(file, argv);
+        } else {
+                int got_eacces;
+                size_t len, pathlen;
+                char *name, *p;
+                char *path = getenv("PATH");
+                if (path == NULL)
+                        path = ":/bin:/usr/bin";
+
+                len = strlen(file) + 1;
+                pathlen = strlen(path);
+                /* Copy the file name at the top.  */
+                name = memcpy(buf + pathlen + 1, file, len);
+                /* And add the slash.  */
+                *--name = '/';
+
+                got_eacces = 0;
+                p = path;
+                do {
+                        char *startp;
+
+                        path = p;
+                        //Let's avoid this GNU extension.
+                        //p = strchrnul (path, ':');
+                        p = strchr(path, ':');
+                        if (!p)
+                                p = strchr(path, '\0');
+
+                        if (p == path)
+                                /* Two adjacent colons, or a colon at the beginning or the end
+                                   of `PATH' means to search the current directory.  */
+                                startp = name + 1;
+                        else
+                                startp = memcpy(name - (p - path), path, p - path);
+
+                        /* Try to execute this name.  If it works, execv will not return.  */
+                        execv(startp, argv);
+
+                        /*
+                        if (errno == ENOEXEC) {
+                        }
+                        */
+
+                        switch (errno) {
+                                case EACCES:
+                                        /* Record the we got a `Permission denied' error.  If we end
+                                           up finding no executable we can use, we want to diagnose
+                                           that we did find one but were denied access.  */
+                                        got_eacces = 1;
+                                case ENOENT:
+                                case ESTALE:
+                                case ENOTDIR:
+                                        /* Those errors indicate the file is missing or not executable
+                                           by us, in which case we want to just try the next path
+                                           directory.  */
+                                case ENODEV:
+                                case ETIMEDOUT:
+                                        /* Some strange filesystems like AFS return even
+                                           stranger error numbers.  They cannot reasonably mean
+                                           anything else so ignore those, too.  */
+                                case ENOEXEC:
+                                        /* We won't go searching for the shell
+                                         * if it is not executable - the Linux
+                                         * kernel already handles this enough,
+                                         * for us. */
+                                        break;
+
+                                default:
+                                        /* Some other error means we found an executable file, but
+                                           something went wrong executing it; return the error to our
+                                           caller.  */
+                                        return -errno;
+                        }
+                } while (*p++ != '\0');
+
+                /* We tried every element and none of them worked.  */
+                if (got_eacces)
+                        /* At least one failure was due to permissions, so report that
+                           error.  */
+                        return -EACCES;
+        }
+
+        /* Return the error from the last attempt (probably ENOENT).  */
+        return -errno;
+}
+#ifdef TEST
+int main(int argc, char**argv)
+{
+        char buf[PATH_MAX];
+        int ret;
+        argc--;
+        if (!argc) {
+                fprintf(stderr, "Not enough arguments\n");
+                return 1;
+        }
+        argv++;
+        if (ret = execvp_noalloc(buf, argv[0], argv)) {
+                errno = -ret;
+                perror("execvp_noalloc");
+        }
+        return 0;
+}
+#endif
diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c
index d13299cfa318..c7ad6306e22f 100644
--- a/arch/um/os-Linux/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -8,18 +8,21 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sched.h>
+#include <limits.h>
 #include <sys/signal.h>
 #include <sys/wait.h>
 #include "user.h"
 #include "kern_util.h"
 #include "user_util.h"
 #include "os.h"
+#include "um_malloc.h"
 
 struct helper_data {
         void (*pre_exec)(void*);
         void *pre_data;
         char **argv;
         int fd;
+        char *buf;
 };
 
 /* Debugging aid, changed only from gdb */
@@ -41,9 +44,8 @@ static int helper_child(void *arg)
         }
         if (data->pre_exec != NULL)
                 (*data->pre_exec)(data->pre_data);
-        execvp(argv[0], argv);
-        errval = -errno;
-        printk("helper_child - execve of '%s' failed - errno = %d\n", argv[0], errno);
+        errval = execvp_noalloc(data->buf, argv[0], argv);
+        printk("helper_child - execvp of '%s' failed - errno = %d\n", argv[0], -errval);
         os_write_file(data->fd, &errval, sizeof(errval));
         kill(os_getpid(), SIGKILL);
         return 0;
@@ -84,11 +86,13 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
         data.pre_data = pre_data;
         data.argv = argv;
         data.fd = fds[1];
+        data.buf = __cant_sleep() ? um_kmalloc_atomic(PATH_MAX) :
+                                        um_kmalloc(PATH_MAX);
         pid = clone(helper_child, (void *) sp, CLONE_VM | SIGCHLD, &data);
         if (pid < 0) {
                 ret = -errno;
                 printk("run_helper : clone failed, errno = %d\n", errno);
-                goto out_close;
+                goto out_free2;
         }
 
         close(fds[1]);
@@ -109,6 +113,8 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
                 CATCH_EINTR(waitpid(pid, NULL, 0));
         }
 
+out_free2:
+        kfree(data.buf);
 out_close:
         if (fds[1] != -1)
                 close(fds[1]);