Char/Misc driver fixes for 4.12-rc5

Here are some small driver fixes for 4.12-rc5.  Nothing major here, just
 some small bugfixes found by people testing, and a MAINTAINERS file
 update for the genwqe driver.
 
 All have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small driver fixes for 4.12-rc5. Nothing major here,
  just some small bugfixes found by people testing, and a MAINTAINERS
  file update for the genwqe driver.

  All have been in linux-next with no reported issues"

[ The cxl driver fix came in through the powerpc tree earlier ]

* tag 'char-misc-4.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  cxl: Avoid double free_irq() for psl,slice interrupts
  mei: make sysfs modalias format similar as uevent modalias
  drivers: char: mem: Fix wraparound check to allow mappings up to the end
  MAINTAINERS: Change maintainer of genwqe driver
  goldfish_pipe: use GFP_ATOMIC under spin lock
  firmware: vpd: do not leak kobjects
  firmware: vpd: avoid potential use-after-free when destroying section
  firmware: vpd: do not leave freed section attributes to the list

MAINTAINERS

@@ -5622,7 +5622,7 @@ F:	scripts/get_maintainer.pl
 
 GENWQE (IBM Generic Workqueue Card)
 M:	Frank Haverkamp <haver@linux.vnet.ibm.com>
-M:	Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
+M:	Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
 S:	Supported
 F:	drivers/misc/genwqe/
 

drivers/char/mem.c

@@ -343,7 +343,7 @@ static int mmap_mem(struct file *file, struct vm_area_struct *vma)
 	phys_addr_t offset = (phys_addr_t)vma->vm_pgoff << PAGE_SHIFT;
 
 	/* It's illegal to wrap around the end of the physical address space. */
-	if (offset + (phys_addr_t)size < offset)
+	if (offset + (phys_addr_t)size - 1 < offset)
 		return -EINVAL;
 
 	if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size))

drivers/firmware/google/vpd.c

@@ -136,12 +136,12 @@ static int vpd_section_attrib_add(const u8 *key, s32 key_len,
 	info->value = value;
 
 	INIT_LIST_HEAD(&info->list);
-	list_add_tail(&info->list, &sec->attribs);
 
 	ret = sysfs_create_bin_file(sec->kobj, &info->bin_attr);
 	if (ret)
 		goto free_info_key;
 
+	list_add_tail(&info->list, &sec->attribs);
 	return 0;
 
 free_info_key:
@@ -158,8 +158,8 @@ static void vpd_section_attrib_destroy(struct vpd_section *sec)
 	struct vpd_attrib_info *temp;
 
 	list_for_each_entry_safe(info, temp, &sec->attribs, list) {
-		kfree(info->key);
 		sysfs_remove_bin_file(sec->kobj, &info->bin_attr);
+		kfree(info->key);
 		kfree(info);
 	}
 }
@@ -244,7 +244,7 @@ static int vpd_section_destroy(struct vpd_section *sec)
 {
 	if (sec->enabled) {
 		vpd_section_attrib_destroy(sec);
-		kobject_del(sec->kobj);
+		kobject_put(sec->kobj);
 		sysfs_remove_bin_file(vpd_kobj, &sec->bin_attr);
 		kfree(sec->raw_name);
 		iounmap(sec->baseaddr);
@@ -331,7 +331,7 @@ static void __exit vpd_platform_exit(void)
 {
 	vpd_section_destroy(&ro_vpd);
 	vpd_section_destroy(&rw_vpd);
-	kobject_del(vpd_kobj);
+	kobject_put(vpd_kobj);
 }
 
 module_init(vpd_platform_init);

drivers/misc/mei/bus.c

@@ -763,8 +763,10 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
 {
 	struct mei_cl_device *cldev = to_mei_cl_device(dev);
 	const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl);
+	u8 version = mei_me_cl_ver(cldev->me_cl);
 
-	return scnprintf(buf, PAGE_SIZE, "mei:%s:%pUl:", cldev->name, uuid);
+	return scnprintf(buf, PAGE_SIZE, "mei:%s:%pUl:%02X:",
+			 cldev->name, uuid, version);
 }
 static DEVICE_ATTR_RO(modalias);
 

drivers/platform/goldfish/goldfish_pipe.c

@@ -704,7 +704,7 @@ static int get_free_pipe_id_locked(struct goldfish_pipe_dev *dev)
 		/* Reallocate the array */
 		u32 new_capacity = 2 * dev->pipes_capacity;
 		struct goldfish_pipe **pipes =
-			kcalloc(new_capacity, sizeof(*pipes), GFP_KERNEL);
+			kcalloc(new_capacity, sizeof(*pipes), GFP_ATOMIC);
 		if (!pipes)
 			return -ENOMEM;
 		memcpy(pipes, dev->pipes, sizeof(*pipes) * dev->pipes_capacity);