19 files changed, 288 insertions, 40 deletions

diff --git a/drivers/char/agp/intel-agp.h b/drivers/char/agp/intel-agp.h
index 999803ce10dc..5da67f165afa 100644
--- a/drivers/char/agp/intel-agp.h
+++ b/drivers/char/agp/intel-agp.h
@@ -90,9 +90,10 @@
 #define G4x_GMCH_SIZE_MASK	(0xf << 8)
 #define G4x_GMCH_SIZE_1M	(0x1 << 8)
 #define G4x_GMCH_SIZE_2M	(0x3 << 8)
-#define G4x_GMCH_SIZE_VT_1M	(0x9 << 8)
-#define G4x_GMCH_SIZE_VT_1_5M	(0xa << 8)
-#define G4x_GMCH_SIZE_VT_2M	(0xc << 8)
+#define G4x_GMCH_SIZE_VT_EN	(0x8 << 8)
+#define G4x_GMCH_SIZE_VT_1M	(G4x_GMCH_SIZE_1M | G4x_GMCH_SIZE_VT_EN)
+#define G4x_GMCH_SIZE_VT_1_5M	((0x2 << 8) | G4x_GMCH_SIZE_VT_EN)
+#define G4x_GMCH_SIZE_VT_2M	(G4x_GMCH_SIZE_2M | G4x_GMCH_SIZE_VT_EN)
 
 #define GFX_FLSH_CNTL		0x2170 /* 915+ */
 
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index 548708c4b2b8..a7346ab97a3c 100644
--- a/drivers/char/apm-emulation.c
+++ b/drivers/char/apm-emulation.c
@@ -606,7 +606,7 @@ static int apm_suspend_notifier(struct notifier_block *nb,
 			return NOTIFY_OK;
 
 		/* interrupted by signal */
-		return NOTIFY_BAD;
+		return notifier_from_errno(err);
 
 	case PM_POST_SUSPEND:
 		/*
diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index cf39bc08ce08..0c688232aab3 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -212,7 +212,7 @@ static int bsr_add_node(struct device_node *bn)
 
 		cur->bsr_minor  = i + total_bsr_devs;
 		cur->bsr_addr   = res.start;
-		cur->bsr_len    = res.end - res.start + 1;
+		cur->bsr_len    = resource_size(&res);
 		cur->bsr_bytes  = bsr_bytes[i];
 		cur->bsr_stride = bsr_stride[i];
 		cur->bsr_dev    = MKDEV(bsr_major, i + total_bsr_devs);
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index 0e941b57482e..6c4f4b5a9dd3 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -34,12 +34,16 @@ static ssize_t nvram_len;
 static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
 {
 	switch (origin) {
+	case 0:
+		break;
 	case 1:
 		offset += file->f_pos;
 		break;
 	case 2:
 		offset += nvram_len;
 		break;
+	default:
+		offset = -1;
 	}
 	if (offset < 0)
 		return -EINVAL;
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 34d6a1cab8de..0833896cf6f2 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -952,7 +952,7 @@ int hpet_alloc(struct hpet_data *hdp)
 #ifdef CONFIG_IA64
 	if (!hpet_clocksource) {
 		hpet_mctr = (void __iomem *)&hpetp->hp_hpet->hpet_mc;
-		CLKSRC_FSYS_MMIO_SET(clocksource_hpet.fsys_mmio, hpet_mctr);
+		clocksource_hpet.archdata.fsys_mmio = hpet_mctr;
 		clocksource_register_hz(&clocksource_hpet, hpetp->hp_tick_freq);
 		hpetp->hp_clocksource = &clocksource_hpet;
 		hpet_clocksource = &clocksource_hpet;
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index a60043b3e409..1d2ebc7a4947 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -210,3 +210,15 @@ config HW_RANDOM_PICOXCELL
 	  module will be called picoxcell-rng.
 
 	  If unsure, say Y.
+
+config HW_RANDOM_PPC4XX
+	tristate "PowerPC 4xx generic true random number generator support"
+	depends on HW_RANDOM && PPC && 4xx
+	---help---
+	 This driver provides the kernel-side support for the TRNG hardware
+	 found in the security function of some PowerPC 4xx SoCs.
+
+	 To compile this driver as a module, choose M here: the
+	 module will be called ppc4xx-rng.
+
+	 If unsure, say N.
diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile
index 3db4eb8b19c0..c88f244c8a71 100644
--- a/drivers/char/hw_random/Makefile
+++ b/drivers/char/hw_random/Makefile
@@ -20,3 +20,4 @@ obj-$(CONFIG_HW_RANDOM_MXC_RNGA) += mxc-rnga.o
 obj-$(CONFIG_HW_RANDOM_OCTEON) += octeon-rng.o
 obj-$(CONFIG_HW_RANDOM_NOMADIK) += nomadik-rng.o
 obj-$(CONFIG_HW_RANDOM_PICOXCELL) += picoxcell-rng.o
+obj-$(CONFIG_HW_RANDOM_PPC4XX) += ppc4xx-rng.o
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 2016aad85203..1bafb40ec8a2 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -19,7 +19,7 @@
 	Copyright 2000,2001 Philipp Rumpf <prumpf@mandrakesoft.com>
 
 	Added generic RNG API
-	Copyright 2006 Michael Buesch <mbuesch@freenet.de>
+	Copyright 2006 Michael Buesch <m@bues.ch>
 	Copyright 2005 (c) MontaVista Software, Inc.
 
 	Please read Documentation/hw_random.txt for details on use.
diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c
index dd1d143eb8ea..52e08ca3ccd7 100644
--- a/drivers/char/hw_random/nomadik-rng.c
+++ b/drivers/char/hw_random/nomadik-rng.c
@@ -55,7 +55,7 @@ static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id)
 
 	ret = amba_request_regions(dev, dev->dev.init_name);
 	if (ret)
-		return ret;
+		goto out_clk;
 	ret = -ENOMEM;
 	base = ioremap(dev->res.start, resource_size(&dev->res));
 	if (!base)
@@ -70,6 +70,7 @@ out_unmap:
 	iounmap(base);
 out_release:
 	amba_release_regions(dev);
+out_clk:
 	clk_disable(rng_clk);
 	clk_put(rng_clk);
 	return ret;
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 2cc755a64302..b757fac3cd1f 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -113,8 +113,10 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	if (!res)
-		return -ENOENT;
+	if (!res) {
+		ret = -ENOENT;
+		goto err_region;
+	}
 
 	if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
 		ret = -EBUSY;
diff --git a/drivers/char/hw_random/ppc4xx-rng.c b/drivers/char/hw_random/ppc4xx-rng.c
new file mode 100644
index 000000000000..b8afa6a4ff67
--- /dev/null
+++ b/drivers/char/hw_random/ppc4xx-rng.c
@@ -0,0 +1,156 @@
+/*
+ * Generic PowerPC 44x RNG driver
+ *
+ * Copyright 2011 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/hw_random.h>
+#include <linux/delay.h>
+#include <linux/of_platform.h>
+#include <asm/io.h>
+
+#define PPC4XX_TRNG_DEV_CTRL 0x60080
+
+#define PPC4XX_TRNGE 0x00020000
+#define PPC4XX_TRNG_CTRL 0x0008
+#define PPC4XX_TRNG_CTRL_DALM 0x20
+#define PPC4XX_TRNG_STAT 0x0004
+#define PPC4XX_TRNG_STAT_B 0x1
+#define PPC4XX_TRNG_DATA 0x0000
+
+#define MODULE_NAME "ppc4xx_rng"
+
+static int ppc4xx_rng_data_present(struct hwrng *rng, int wait)
+{
+	void __iomem *rng_regs = (void __iomem *) rng->priv;
+	int busy, i, present = 0;
+
+	for (i = 0; i < 20; i++) {
+		busy = (in_le32(rng_regs + PPC4XX_TRNG_STAT) & PPC4XX_TRNG_STAT_B);
+		if (!busy || !wait) {
+			present = 1;
+			break;
+		}
+		udelay(10);
+	}
+	return present;
+}
+
+static int ppc4xx_rng_data_read(struct hwrng *rng, u32 *data)
+{
+	void __iomem *rng_regs = (void __iomem *) rng->priv;
+	*data = in_le32(rng_regs + PPC4XX_TRNG_DATA);
+	return 4;
+}
+
+static int ppc4xx_rng_enable(int enable)
+{
+	struct device_node *ctrl;
+	void __iomem *ctrl_reg;
+	int err = 0;
+	u32 val;
+
+	/* Find the main crypto device node and map it to turn the TRNG on */
+	ctrl = of_find_compatible_node(NULL, NULL, "amcc,ppc4xx-crypto");
+	if (!ctrl)
+		return -ENODEV;
+
+	ctrl_reg = of_iomap(ctrl, 0);
+	if (!ctrl_reg) {
+		err = -ENODEV;
+		goto out;
+	}
+
+	val = in_le32(ctrl_reg + PPC4XX_TRNG_DEV_CTRL);
+
+	if (enable)
+		val |= PPC4XX_TRNGE;
+	else
+		val = val & ~PPC4XX_TRNGE;
+
+	out_le32(ctrl_reg + PPC4XX_TRNG_DEV_CTRL, val);
+	iounmap(ctrl_reg);
+
+out:
+	of_node_put(ctrl);
+
+	return err;
+}
+
+static struct hwrng ppc4xx_rng = {
+	.name = MODULE_NAME,
+	.data_present = ppc4xx_rng_data_present,
+	.data_read = ppc4xx_rng_data_read,
+};
+
+static int __devinit ppc4xx_rng_probe(struct platform_device *dev)
+{
+	void __iomem *rng_regs;
+	int err = 0;
+
+	rng_regs = of_iomap(dev->dev.of_node, 0);
+	if (!rng_regs)
+		return -ENODEV;
+
+	err = ppc4xx_rng_enable(1);
+	if (err)
+		return err;
+
+	out_le32(rng_regs + PPC4XX_TRNG_CTRL, PPC4XX_TRNG_CTRL_DALM);
+	ppc4xx_rng.priv = (unsigned long) rng_regs;
+
+	err = hwrng_register(&ppc4xx_rng);
+
+	return err;
+}
+
+static int __devexit ppc4xx_rng_remove(struct platform_device *dev)
+{
+	void __iomem *rng_regs = (void __iomem *) ppc4xx_rng.priv;
+
+	hwrng_unregister(&ppc4xx_rng);
+	ppc4xx_rng_enable(0);
+	iounmap(rng_regs);
+
+	return 0;
+}
+
+static struct of_device_id ppc4xx_rng_match[] = {
+	{ .compatible = "ppc4xx-rng", },
+	{ .compatible = "amcc,ppc460ex-rng", },
+	{ .compatible = "amcc,ppc440epx-rng", },
+	{},
+};
+
+static struct platform_driver ppc4xx_rng_driver = {
+	.driver = {
+		.name = MODULE_NAME,
+		.owner = THIS_MODULE,
+		.of_match_table = ppc4xx_rng_match,
+	},
+	.probe = ppc4xx_rng_probe,
+	.remove = ppc4xx_rng_remove,
+};
+
+static int __init ppc4xx_rng_init(void)
+{
+	return platform_driver_register(&ppc4xx_rng_driver);
+}
+module_init(ppc4xx_rng_init);
+
+static void __exit ppc4xx_rng_exit(void)
+{
+	platform_driver_unregister(&ppc4xx_rng_driver);
+}
+module_exit(ppc4xx_rng_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Josh Boyer <jwboyer@linux.vnet.ibm.com>");
+MODULE_DESCRIPTION("HW RNG driver for PPC 4xx processors");
diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c
index a94e930575f2..a8428e6f64a9 100644
--- a/drivers/char/hw_random/timeriomem-rng.c
+++ b/drivers/char/hw_random/timeriomem-rng.c
@@ -100,8 +100,7 @@ static int __devinit timeriomem_rng_probe(struct platform_device *pdev)
 
 	timeriomem_rng_data = pdev->dev.platform_data;
 
-	timeriomem_rng_data->address = ioremap(res->start,
-						res->end - res->start + 1);
+	timeriomem_rng_data->address = ioremap(res->start, resource_size(res));
 	if (!timeriomem_rng_data->address)
 		return -EIO;
 
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 320668f4c3aa..3302586655c4 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -52,7 +52,7 @@
 #include <linux/string.h>
 #include <linux/ctype.h>
 #include <linux/delay.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 
 #ifdef CONFIG_X86
 /*
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 25d139c9dbed..5c0d96a820fa 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -46,7 +46,7 @@
 #include <asm/page.h>
 #include <asm/system.h>
 #include <asm/pgtable.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/tlbflush.h>
 #include <asm/uncached.h>
 #include <asm/sn/addrs.h>
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 166f1e7aaa7e..da3cfee782dc 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -224,6 +224,8 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
 	case 2:
 		offset += NVRAM_BYTES;
 		break;
+	default:
+		return -EINVAL;
 	}
 
 	return (offset >= 0) ? (file->f_pos = offset) : -EINVAL;
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 85c004a518ee..d0c57c2e2909 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -101,12 +101,16 @@ static loff_t ps3flash_llseek(struct file *file, loff_t offset, int origin)
 
 	mutex_lock(&file->f_mapping->host->i_mutex);
 	switch (origin) {
+	case 0:
+		break;
 	case 1:
 		offset += file->f_pos;
 		break;
 	case 2:
 		offset += dev->regions[dev->region_idx].size*dev->blk_size;
 		break;
+	default:
+		offset = -1;
 	}
 	if (offset < 0) {
 		res = -EINVAL;
@@ -305,9 +309,14 @@ static int ps3flash_flush(struct file *file, fl_owner_t id)
 	return ps3flash_writeback(ps3flash_dev);
 }
 
-static int ps3flash_fsync(struct file *file, int datasync)
+static int ps3flash_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
-	return ps3flash_writeback(ps3flash_dev);
+	struct inode *inode = file->f_path.dentry->d_inode;
+	int err;
+	mutex_lock(&inode->i_mutex);
+	err = ps3flash_writeback(ps3flash_dev);
+	mutex_unlock(&inode->i_mutex);
+	return err;
 }
 
 static irqreturn_t ps3flash_interrupt(int irq, void *data)
diff --git a/drivers/char/ramoops.c b/drivers/char/ramoops.c
index 1a9f5f6d6ac5..bd9b94b518f3 100644
--- a/drivers/char/ramoops.c
+++ b/drivers/char/ramoops.c
@@ -19,6 +19,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/kmsg_dump.h>
@@ -26,11 +28,16 @@
 #include <linux/io.h>
 #include <linux/ioport.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <linux/ramoops.h>
 
 #define RAMOOPS_KERNMSG_HDR "===="
+#define MIN_MEM_SIZE 4096UL
 
-#define RECORD_SIZE 4096UL
+static ulong record_size = MIN_MEM_SIZE;
+module_param(record_size, ulong, 0400);
+MODULE_PARM_DESC(record_size,
+		"size of each dump done on oops/panic");
 
 static ulong mem_address;
 module_param(mem_address, ulong, 0400);
@@ -52,10 +59,15 @@ static struct ramoops_context {
 	void *virt_addr;
 	phys_addr_t phys_addr;
 	unsigned long size;
+	unsigned long record_size;
+	int dump_oops;
 	int count;
 	int max_count;
 } oops_cxt;
 
+static struct platform_device *dummy;
+static struct ramoops_platform_data *dummy_data;
+
 static void ramoops_do_dump(struct kmsg_dumper *dumper,
 		enum kmsg_dump_reason reason, const char *s1, unsigned long l1,
 		const char *s2, unsigned long l2)
@@ -74,13 +86,13 @@ static void ramoops_do_dump(struct kmsg_dumper *dumper,
 		return;
 
 	/* Only dump oopses if dump_oops is set */
-	if (reason == KMSG_DUMP_OOPS && !dump_oops)
+	if (reason == KMSG_DUMP_OOPS && !cxt->dump_oops)
 		return;
 
-	buf = cxt->virt_addr + (cxt->count * RECORD_SIZE);
+	buf = cxt->virt_addr + (cxt->count * cxt->record_size);
 	buf_orig = buf;
 
-	memset(buf, '\0', RECORD_SIZE);
+	memset(buf, '\0', cxt->record_size);
 	res = sprintf(buf, "%s", RAMOOPS_KERNMSG_HDR);
 	buf += res;
 	do_gettimeofday(&timestamp);
@@ -88,8 +100,8 @@ static void ramoops_do_dump(struct kmsg_dumper *dumper,
 	buf += res;
 
 	hdr_size = buf - buf_orig;
-	l2_cpy = min(l2, RECORD_SIZE - hdr_size);
-	l1_cpy = min(l1, RECORD_SIZE - hdr_size - l2_cpy);
+	l2_cpy = min(l2, cxt->record_size - hdr_size);
+	l1_cpy = min(l1, cxt->record_size - hdr_size - l2_cpy);
 
 	s2_start = l2 - l2_cpy;
 	s1_start = l1 - l1_cpy;
@@ -106,44 +118,51 @@ static int __init ramoops_probe(struct platform_device *pdev)
 	struct ramoops_context *cxt = &oops_cxt;
 	int err = -EINVAL;
 
-	if (pdata) {
-		mem_size = pdata->mem_size;
-		mem_address = pdata->mem_address;
+	if (!pdata->mem_size || !pdata->record_size) {
+		pr_err("The memory size and the record size must be "
+			"non-zero\n");
+		goto fail3;
 	}
 
-	if (!mem_size) {
-		printk(KERN_ERR "ramoops: invalid size specification");
+	rounddown_pow_of_two(pdata->mem_size);
+	rounddown_pow_of_two(pdata->record_size);
+
+	/* Check for the minimum memory size */
+	if (pdata->mem_size < MIN_MEM_SIZE &&
+			pdata->record_size < MIN_MEM_SIZE) {
+		pr_err("memory size too small, minium is %lu\n", MIN_MEM_SIZE);
 		goto fail3;
 	}
 
-	rounddown_pow_of_two(mem_size);
-
-	if (mem_size < RECORD_SIZE) {
-		printk(KERN_ERR "ramoops: size too small");
+	if (pdata->mem_size < pdata->record_size) {
+		pr_err("The memory size must be larger than the "
+			"records size\n");
 		goto fail3;
 	}
 
-	cxt->max_count = mem_size / RECORD_SIZE;
+	cxt->max_count = pdata->mem_size / pdata->record_size;
 	cxt->count = 0;
-	cxt->size = mem_size;
-	cxt->phys_addr = mem_address;
+	cxt->size = pdata->mem_size;
+	cxt->phys_addr = pdata->mem_address;
+	cxt->record_size = pdata->record_size;
+	cxt->dump_oops = pdata->dump_oops;
 
 	if (!request_mem_region(cxt->phys_addr, cxt->size, "ramoops")) {
-		printk(KERN_ERR "ramoops: request mem region failed");
+		pr_err("request mem region failed\n");
 		err = -EINVAL;
 		goto fail3;
 	}
 
 	cxt->virt_addr = ioremap(cxt->phys_addr,  cxt->size);
 	if (!cxt->virt_addr) {
-		printk(KERN_ERR "ramoops: ioremap failed");
+		pr_err("ioremap failed\n");
 		goto fail2;
 	}
 
 	cxt->dump.dump = ramoops_do_dump;
 	err = kmsg_dump_register(&cxt->dump);
 	if (err) {
-		printk(KERN_ERR "ramoops: registering kmsg dumper failed");
+		pr_err("registering kmsg dumper failed\n");
 		goto fail1;
 	}
 
@@ -162,7 +181,7 @@ static int __exit ramoops_remove(struct platform_device *pdev)
 	struct ramoops_context *cxt = &oops_cxt;
 
 	if (kmsg_dump_unregister(&cxt->dump) < 0)
-		printk(KERN_WARNING "ramoops: could not unregister kmsg_dumper");
+		pr_warn("could not unregister kmsg_dumper\n");
 
 	iounmap(cxt->virt_addr);
 	release_mem_region(cxt->phys_addr, cxt->size);
@@ -179,12 +198,39 @@ static struct platform_driver ramoops_driver = {
 
 static int __init ramoops_init(void)
 {
-	return platform_driver_probe(&ramoops_driver, ramoops_probe);
+	int ret;
+	ret = platform_driver_probe(&ramoops_driver, ramoops_probe);
+	if (ret == -ENODEV) {
+		/*
+		 * If we didn't find a platform device, we use module parameters
+		 * building platform data on the fly.
+		 */
+		pr_info("platform device not found, using module parameters\n");
+		dummy_data = kzalloc(sizeof(struct ramoops_platform_data),
+				     GFP_KERNEL);
+		if (!dummy_data)
+			return -ENOMEM;
+		dummy_data->mem_size = mem_size;
+		dummy_data->mem_address = mem_address;
+		dummy_data->record_size = record_size;
+		dummy_data->dump_oops = dump_oops;
+		dummy = platform_create_bundle(&ramoops_driver, ramoops_probe,
+			NULL, 0, dummy_data,
+			sizeof(struct ramoops_platform_data));
+
+		if (IS_ERR(dummy))
+			ret = PTR_ERR(dummy);
+		else
+			ret = 0;
+	}
+
+	return ret;
 }
 
 static void __exit ramoops_exit(void)
 {
 	platform_driver_unregister(&ramoops_driver);
+	kfree(dummy_data);
 }
 
 module_init(ramoops_init);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index d4ddeba56682..729281961f22 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1523,6 +1523,21 @@ __u32 secure_ip_id(__be32 daddr)
 	return half_md4_transform(hash, keyptr->secret);
 }
 
+__u32 secure_ipv6_id(const __be32 daddr[4])
+{
+	const struct keydata *keyptr;
+	__u32 hash[4];
+
+	keyptr = get_keyptr();
+
+	hash[0] = (__force __u32)daddr[0];
+	hash[1] = (__force __u32)daddr[1];
+	hash[2] = (__force __u32)daddr[2];
+	hash[3] = (__force __u32)daddr[3];
+
+	return half_md4_transform(hash, keyptr->secret);
+}
+
 #ifdef CONFIG_INET
 
 __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr,
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
index 39ccdeada791..e90e1c74fd4c 100644
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
@@ -621,7 +621,7 @@ static int __devinit hwicap_setup(struct device *dev, int id,
 
 	drvdata->mem_start = regs_res->start;
 	drvdata->mem_end = regs_res->end;
-	drvdata->mem_size = regs_res->end - regs_res->start + 1;
+	drvdata->mem_size = resource_size(regs_res);
 
 	if (!request_mem_region(drvdata->mem_start,
 					drvdata->mem_size, DRIVER_NAME)) {