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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 18:27:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 18:27:46 -0700
commit0be75179df5e20306528800fc7c6a504b12b97db (patch)
tree726e88308f0a08384523bcb542bda510ca723748 /drivers/base
parent8f28472a739e8e39adc6e64ee5b460df039f0e4f (diff)
parent523aa3586ffb1fc11a9bf88f77ebaf71a15eb998 (diff)
downloadlinux-0be75179df5e20306528800fc7c6a504b12b97db.tar.bz2
Merge tag 'driver-core-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH: "Very tiny pull request for 4.12-rc1 for the driver core this time around. There are some documentation fixes, an eventpoll.h fixup to make it easier for the libc developers to take our header files directly, and some very minor driver core fixes and changes. All have been in linux-next for a very long time with no reported issues" * tag 'driver-core-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: Revert "kref: double kref_put() in my_data_handler()" driver core: don't initialize 'parent' in device_add() drivers: base: dma-mapping: use nth_page helper Documentation/ABI: add information about cpu_capacity debugfs: set no_llseek in DEFINE_DEBUGFS_ATTRIBUTE eventpoll.h: add missing epoll event masks eventpoll.h: fix epoll event masks
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/core.c2
-rw-r--r--drivers/base/dma-mapping.c5
2 files changed, 3 insertions, 4 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 6bb60fb6a30b..bbecaf9293be 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1607,7 +1607,7 @@ int device_private_init(struct device *dev)
*/
int device_add(struct device *dev)
{
- struct device *parent = NULL;
+ struct device *parent;
struct kobject *kobj;
struct class_interface *class_intf;
int error = -EINVAL;
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index efd71cf4fdea..51b7061ff7c0 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c
@@ -309,14 +309,13 @@ void *dma_common_contiguous_remap(struct page *page, size_t size,
int i;
struct page **pages;
void *ptr;
- unsigned long pfn;
pages = kmalloc(sizeof(struct page *) << get_order(size), GFP_KERNEL);
if (!pages)
return NULL;
- for (i = 0, pfn = page_to_pfn(page); i < (size >> PAGE_SHIFT); i++)
- pages[i] = pfn_to_page(pfn + i);
+ for (i = 0; i < (size >> PAGE_SHIFT); i++)
+ pages[i] = nth_page(page, i);
ptr = dma_common_pages_remap(pages, size, vm_flags, prot, caller);