Merge tag 'driver-core-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and sysfs updates from Greg KH:
 "Here's the big driver core / sysfs update for 3.15-rc1.

  Lots of kernfs updates to make it useful for other subsystems, and a
  few other tiny driver core patches.

  All have been in linux-next for a while"

* tag 'driver-core-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (42 commits)
  Revert "sysfs, driver-core: remove unused {sysfs|device}_schedule_callback_owner()"
  kernfs: cache atomic_write_len in kernfs_open_file
  numa: fix NULL pointer access and memory leak in unregister_one_node()
  Revert "driver core: synchronize device shutdown"
  kernfs: fix off by one error.
  kernfs: remove duplicate dir.c at the top dir
  x86: align x86 arch with generic CPU modalias handling
  cpu: add generic support for CPU feature based module autoloading
  sysfs: create bin_attributes under the requested group
  driver core: unexport static function create_syslog_header
  firmware: use power efficient workqueue for unloading and aborting fw load
  firmware: give a protection when map page failed
  firmware: google memconsole driver fixes
  firmware: fix google/gsmi duplicate efivars_sysfs_init()
  drivers/base: delete non-required instances of include <linux/init.h>
  kernfs: fix kernfs_node_from_dentry()
  ACPI / platform: drop redundant ACPI_HANDLE check
  kernfs: fix hash calculation in kernfs_rename_ns()
  kernfs: add CONFIG_KERNFS
  sysfs, kobject: add sysfs wrapper for kernfs_enable_ns()
  ...

5 files changed, 17 insertions, 55 deletions

diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h
index 23723ce5ca7a..6e670f88d125 100644
--- a/arch/s390/include/asm/ccwgroup.h
+++ b/arch/s390/include/asm/ccwgroup.h
@@ -23,6 +23,7 @@ struct ccwgroup_device {
         unsigned int count;
         struct device   dev;
         struct ccw_device *cdev[0];
+        struct work_struct ungroup_work;
 };
 
 /**
diff --git a/arch/s390/pci/pci_sysfs.c b/arch/s390/pci/pci_sysfs.c
index cf8a12ff733b..ab4a91393005 100644
--- a/arch/s390/pci/pci_sysfs.c
+++ b/arch/s390/pci/pci_sysfs.c
@@ -48,29 +48,27 @@ static ssize_t show_pfgid(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR(pfgid, S_IRUGO, show_pfgid, NULL);
 
-static void recover_callback(struct device *dev)
+static ssize_t store_recover(struct device *dev, struct device_attribute *attr,
+                             const char *buf, size_t count)
 {
         struct pci_dev *pdev = to_pci_dev(dev);
         struct zpci_dev *zdev = get_zdev(pdev);
         int ret;
 
+        if (!device_remove_file_self(dev, attr))
+                return count;
+
         pci_stop_and_remove_bus_device(pdev);
         ret = zpci_disable_device(zdev);
         if (ret)
-                return;
+                return ret;
 
         ret = zpci_enable_device(zdev);
         if (ret)
-                return;
+                return ret;
 
         pci_rescan_bus(zdev->bus);
-}
-
-static ssize_t store_recover(struct device *dev, struct device_attribute *attr,
-                             const char *buf, size_t count)
-{
-        int rc = device_schedule_callback(dev, recover_callback);
-        return rc ? rc : count;
+        return count;
 }
 static DEVICE_ATTR(recover, S_IWUSR, NULL, store_recover);
 
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8453fe1342ea..26237934ac87 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -127,6 +127,7 @@ config X86
         select HAVE_DEBUG_STACKOVERFLOW
         select HAVE_IRQ_EXIT_ON_IRQ_STACK if X86_64
         select HAVE_CC_STACKPROTECTOR
+        select GENERIC_CPU_AUTOPROBE
 
 config INSTRUCTION_DECODER
         def_bool y
@@ -195,9 +196,6 @@ config ARCH_HAS_CPU_RELAX
 config ARCH_HAS_CACHE_LINE_SIZE
         def_bool y
 
-config ARCH_HAS_CPU_AUTOPROBE
-        def_bool y
-
 config HAVE_SETUP_PER_CPU_AREA
         def_bool y
 
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 63211ef5046a..e265ff95d16d 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -546,6 +546,13 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
 #define static_cpu_has_bug(bit) static_cpu_has((bit))
 #define boot_cpu_has_bug(bit)   cpu_has_bug(&boot_cpu_data, (bit))
 
+#define MAX_CPU_FEATURES        (NCAPINTS * 32)
+#define cpu_have_feature        boot_cpu_has
+
+#define CPU_FEATURE_TYPEFMT     "x86,ven%04Xfam%04Xmod%04X"
+#define CPU_FEATURE_TYPEVAL     boot_cpu_data.x86_vendor, boot_cpu_data.x86, \
+                                boot_cpu_data.x86_model
+
 #endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
 
 #endif /* _ASM_X86_CPUFEATURE_H */
diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c
index 36565373af87..afa9f0d487ea 100644
--- a/arch/x86/kernel/cpu/match.c
+++ b/arch/x86/kernel/cpu/match.c
@@ -47,45 +47,3 @@ const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match)
         return NULL;
 }
 EXPORT_SYMBOL(x86_match_cpu);
-
-ssize_t arch_print_cpu_modalias(struct device *dev,
-                                struct device_attribute *attr,
-                                char *bufptr)
-{
-        int size = PAGE_SIZE;
-        int i, n;
-        char *buf = bufptr;
-
-        n = snprintf(buf, size, "x86cpu:vendor:%04X:family:%04X:"
-                     "model:%04X:feature:",
-                boot_cpu_data.x86_vendor,
-                boot_cpu_data.x86,
-                boot_cpu_data.x86_model);
-        size -= n;
-        buf += n;
-        size -= 1;
-        for (i = 0; i < NCAPINTS*32; i++) {
-                if (boot_cpu_has(i)) {
-                        n = snprintf(buf, size, ",%04X", i);
-                        if (n >= size) {
-                                WARN(1, "x86 features overflow page\n");
-                                break;
-                        }
-                        size -= n;
-                        buf += n;
-                }
-        }
-        *buf++ = '\n';
-        return buf - bufptr;
-}
-
-int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
-        char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
-        if (buf) {
-                arch_print_cpu_modalias(NULL, NULL, buf);
-                add_uevent_var(env, "MODALIAS=%s", buf);
-                kfree(buf);
-        }
-        return 0;
-}