Staging: Merge staging-next into Linus's tree

Conflicts:
	drivers/staging/Kconfig
	drivers/staging/batman-adv/bat_sysfs.c
	drivers/staging/batman-adv/device.c
	drivers/staging/batman-adv/hard-interface.c
	drivers/staging/cx25821/cx25821-audups11.c

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 27 insertions, 16 deletions

diff --git a/drivers/staging/memrar/TODO b/drivers/staging/memrar/TODO
index 0087447d5034..435e09ba44c5 100644
--- a/drivers/staging/memrar/TODO
+++ b/drivers/staging/memrar/TODO
@@ -1,7 +1,7 @@
 RAR Handler (memrar) Driver TODO Items
 ======================================
 
-Maintainer: Ossama Othman <ossama.othman@intel.com>
+Maintainer: Eugene Epshteyn <eugene.epshteyn@intel.com>
 
 memrar.h
 --------
diff --git a/drivers/staging/memrar/memrar-abi b/drivers/staging/memrar/memrar-abi
index 98a6bb158baf..c23fc996a435 100644
--- a/drivers/staging/memrar/memrar-abi
+++ b/drivers/staging/memrar/memrar-abi
@@ -1,7 +1,7 @@
 What:		/dev/memrar
 Date:		March 2010
-KernelVersion:	Kernel version this feature first showed up in.
-Contact:	Ossama Othman <ossama.othman@intel.com>
+KernelVersion:	2.6.34
+Contact:	Eugene Epshteyn <eugene.epshteyn@intel.com>
 Description:	The Intel Moorestown Restricted Access Region (RAR)
 		Handler driver exposes an ioctl() based interface that
 		allows a user to reserve and release blocks of RAR
diff --git a/drivers/staging/memrar/memrar_handler.c b/drivers/staging/memrar/memrar_handler.c
index 41876f2b0e54..a98b3f1f11e0 100644
--- a/drivers/staging/memrar/memrar_handler.c
+++ b/drivers/staging/memrar/memrar_handler.c
@@ -278,19 +278,10 @@ static int memrar_init_rar_resources(int rarnum, char const *devname)
 	BUG_ON(!memrar_is_valid_rar_type(rarnum));
 	BUG_ON(rar->allocated);
 
-	mutex_init(&rar->lock);
-
-	/*
-	 * Initialize the process table before we reach any
-	 * code that exit on failure since the finalization
-	 * code requires an initialized list.
-	 */
-	INIT_LIST_HEAD(&rar->buffers.list);
-
 	if (rar_get_address(rarnum, &low, &high) != 0)
 		/* No RAR is available. */
 		return -ENODEV;
-	
+
 	if (low == 0 || high == 0) {
 		rar->base      = 0;
 		rar->length    = 0;
@@ -310,7 +301,8 @@ static int memrar_init_rar_resources(int rarnum, char const *devname)
 	/* Claim RAR memory as our own. */
 	if (request_mem_region(low, rar->length, devname) == NULL) {
 		rar->length = 0;
-		pr_err("%s: Unable to claim RAR[%d] memory.\n", devname, rarnum);
+		pr_err("%s: Unable to claim RAR[%d] memory.\n",
+		       devname, rarnum);
 		pr_err("%s: RAR[%d] disabled.\n", devname, rarnum);
 		return -EBUSY;
 	}
@@ -346,7 +338,7 @@ static int memrar_init_rar_resources(int rarnum, char const *devname)
 	}
 
 	pr_info("%s: BRAR[%d] bus address range = [0x%lx, 0x%lx]\n",
-			devname, rarnum, (unsigned long) low, (unsigned long) high);
+		devname, rarnum, (unsigned long) low, (unsigned long) high);
 
 	pr_info("%s: BRAR[%d] size = %zu KiB\n",
 			devname, rarnum, rar->allocator->capacity / 1024);
@@ -530,7 +522,7 @@ static long memrar_get_stat(struct RAR_stat *r)
 {
 	struct memrar_allocator *allocator;
 
- 	if (!memrar_is_valid_rar_type(r->type))
+	if (!memrar_is_valid_rar_type(r->type))
 		return -EINVAL;
 
 	if (!memrars[r->type].allocated)
@@ -939,9 +931,28 @@ static int memrar_registration_callback(unsigned long rar)
 static int __init memrar_init(void)
 {
 	int err;
+	int i;
 
 	printk(banner);
 
+	/*
+	 * Some delayed initialization is performed in this driver.
+	 * Make sure resources that are used during driver clean-up
+	 * (e.g. during driver's release() function) are fully
+	 * initialized before first use.  This is particularly
+	 * important for the case when the delayed initialization
+	 * isn't completed, leaving behind a partially initialized
+	 * driver.
+	 *
+	 * Such a scenario can occur when RAR is not available on the
+	 * platform, and the driver is release()d.
+	 */
+	for (i = 0; i != ARRAY_SIZE(memrars); ++i) {
+		struct memrar_rar_info * const rar = &memrars[i];
+		mutex_init(&rar->lock);
+		INIT_LIST_HEAD(&rar->buffers.list);
+	}
+
 	err = misc_register(&memrar_miscdev);
 	if (err)
 		return err;