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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-15 10:48:44 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-15 10:48:44 -0800
commit4ba63072b998cc31515cc6305c25f3b808b50c01 (patch)
tree779863511765c70bfd232f676b885f940ba88722 /drivers/char/mem.c
parente29876723f7cb7728f0d6a674d23f92673e9f112 (diff)
parent5fb31cd839c21130c0b2524ceb9244e98dfe10e3 (diff)
downloadlinux-4ba63072b998cc31515cc6305c25f3b808b50c01.tar.bz2
Merge tag 'char-misc-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc patches from Greg KH: "Here's the big char/misc driver update for 3.20-rc1. Lots of little things in here, all described in the changelog. Nothing major or unusual, except maybe the binder selinux stuff, which was all acked by the proper selinux people and they thought it best to come through this tree. All of this has been in linux-next with no reported issues for a while" * tag 'char-misc-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits) coresight: fix function etm_writel_cp14() parameter order coresight-etm: remove check for unknown Kconfig macro coresight: fixing CPU hwid lookup in device tree coresight: remove the unnecessary function coresight_is_bit_set() coresight: fix the debug AMBA bus name coresight: remove the extra spaces coresight: fix the link between orphan connection and newly added device coresight: remove the unnecessary replicator property coresight: fix the replicator subtype value pdfdocs: Fix 'make pdfdocs' failure for 'uio-howto.tmpl' mcb: Fix error path of mcb_pci_probe virtio/console: verify device has config space ti-st: clean up data types (fix harmless memory corruption) mei: me: release hw from reset only during the reset flow mei: mask interrupt set bit on clean reset bit extcon: max77693: Constify struct regmap_config extcon: adc-jack: Release IIO channel on driver remove extcon: Remove duplicated include from extcon-class.c Drivers: hv: vmbus: hv_process_timer_expiration() can be static Drivers: hv: vmbus: serialize Offer and Rescind offer ...
Diffstat (limited to 'drivers/char/mem.c')
-rw-r--r--drivers/char/mem.c22
1 files changed, 8 insertions, 14 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 9a6b63783a94..297110c12635 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -28,7 +28,7 @@
#include <linux/io.h>
#include <linux/aio.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#ifdef CONFIG_IA64
# include <linux/efi.h>
@@ -352,7 +352,6 @@ static int mmap_mem(struct file *file, struct vm_area_struct *vma)
return 0;
}
-#ifdef CONFIG_DEVKMEM
static int mmap_kmem(struct file *file, struct vm_area_struct *vma)
{
unsigned long pfn;
@@ -373,9 +372,7 @@ static int mmap_kmem(struct file *file, struct vm_area_struct *vma)
vma->vm_pgoff = pfn;
return mmap_mem(file, vma);
}
-#endif
-#ifdef CONFIG_DEVKMEM
/*
* This function reads the *virtual* memory as seen by the kernel.
*/
@@ -555,9 +552,7 @@ static ssize_t write_kmem(struct file *file, const char __user *buf,
*ppos = p;
return virtr + wrote ? : err;
}
-#endif
-#ifdef CONFIG_DEVPORT
static ssize_t read_port(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
@@ -586,6 +581,7 @@ static ssize_t write_port(struct file *file, const char __user *buf,
return -EFAULT;
while (count-- > 0 && i < 65536) {
char c;
+
if (__get_user(c, tmp)) {
if (tmp > buf)
break;
@@ -598,7 +594,6 @@ static ssize_t write_port(struct file *file, const char __user *buf,
*ppos = i;
return tmp-buf;
}
-#endif
static ssize_t read_null(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
@@ -642,6 +637,7 @@ static ssize_t read_iter_zero(struct kiocb *iocb, struct iov_iter *iter)
while (iov_iter_count(iter)) {
size_t chunk = iov_iter_count(iter), n;
+
if (chunk > PAGE_SIZE)
chunk = PAGE_SIZE; /* Just for latency reasons */
n = iov_iter_zero(chunk, iter);
@@ -726,7 +722,7 @@ static int open_port(struct inode *inode, struct file *filp)
#define open_mem open_port
#define open_kmem open_mem
-static const struct file_operations mem_fops = {
+static const struct file_operations __maybe_unused mem_fops = {
.llseek = memory_lseek,
.read = read_mem,
.write = write_mem,
@@ -738,8 +734,7 @@ static const struct file_operations mem_fops = {
#endif
};
-#ifdef CONFIG_DEVKMEM
-static const struct file_operations kmem_fops = {
+static const struct file_operations __maybe_unused kmem_fops = {
.llseek = memory_lseek,
.read = read_kmem,
.write = write_kmem,
@@ -750,7 +745,6 @@ static const struct file_operations kmem_fops = {
.mmap_capabilities = memory_mmap_capabilities,
#endif
};
-#endif
static const struct file_operations null_fops = {
.llseek = null_lseek,
@@ -761,14 +755,12 @@ static const struct file_operations null_fops = {
.splice_write = splice_write_null,
};
-#ifdef CONFIG_DEVPORT
-static const struct file_operations port_fops = {
+static const struct file_operations __maybe_unused port_fops = {
.llseek = memory_lseek,
.read = read_port,
.write = write_port,
.open = open_port,
};
-#endif
static const struct file_operations zero_fops = {
.llseek = zero_lseek,
@@ -795,7 +787,9 @@ static const struct memdev {
const struct file_operations *fops;
fmode_t fmode;
} devlist[] = {
+#ifdef CONFIG_DEVMEM
[1] = { "mem", 0, &mem_fops, FMODE_UNSIGNED_OFFSET },
+#endif
#ifdef CONFIG_DEVKMEM
[2] = { "kmem", 0, &kmem_fops, FMODE_UNSIGNED_OFFSET },
#endif