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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-15 21:48:44 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-15 21:48:44 +0300 |
commit | 4ba63072b998cc31515cc6305c25f3b808b50c01 (patch) | |
tree | 779863511765c70bfd232f676b885f940ba88722 /drivers/char/mem.c | |
parent | e29876723f7cb7728f0d6a674d23f92673e9f112 (diff) | |
parent | 5fb31cd839c21130c0b2524ceb9244e98dfe10e3 (diff) | |
download | linux-4ba63072b998cc31515cc6305c25f3b808b50c01.tar.xz |
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.c | 22 |
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 |