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staging: android: ashmem: Remove use of unlikely() 

There is no speed difference, and it makes the code harder to read.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Todd Kjos <tkjos@android.com>
Cc: Martijn Coenen <maco@android.com>
Cc: devel@driverdev.osuosl.org
Cc: linux-kernel@vger.kernel.org
Cc: kernel-team@android.com
Cc: Joel Fernandes <joel@joelfernandes.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alistair Strachan <astrachan@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alistair Strachan 2018-06-19 17:57:34 -07:00 committed by Greg Kroah-Hartman
parent 5c6d0dbb02
commit 59848d6ade
1 changed files with 17 additions and 17 deletions
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34
drivers/staging/android/ashmem.c
View File

@ -178,7 +178,7 @@ static int range_alloc(struct ashmem_area *asma,
struct ashmem_range *range;
range = kmem_cache_zalloc(ashmem_range_cachep, GFP_KERNEL);
if (unlikely(!range))
if (!range)
return -ENOMEM;
range->asma = asma;
@ -246,11 +246,11 @@ static int ashmem_open(struct inode *inode, struct file *file)
int ret;
ret = generic_file_open(inode, file);
if (unlikely(ret))
if (ret)
return ret;
asma = kmem_cache_zalloc(ashmem_area_cachep, GFP_KERNEL);
if (unlikely(!asma))
if (!asma)
return -ENOMEM;
INIT_LIST_HEAD(&asma->unpinned_list);
@ -361,14 +361,14 @@ static int ashmem_mmap(struct file *file, struct vm_area_struct *vma)
mutex_lock(&ashmem_mutex);
/* user needs to SET_SIZE before mapping */
if (unlikely(!asma->size)) {
if (!asma->size) {
ret = -EINVAL;
goto out;
}
/* requested protection bits must match our allowed protection mask */
if (unlikely((vma->vm_flags & ~calc_vm_prot_bits(asma->prot_mask, 0)) &
calc_vm_prot_bits(PROT_MASK, 0))) {
if ((vma->vm_flags & ~calc_vm_prot_bits(asma->prot_mask, 0)) &
calc_vm_prot_bits(PROT_MASK, 0)) {
ret = -EPERM;
goto out;
}
@ -486,7 +486,7 @@ static int set_prot_mask(struct ashmem_area *asma, unsigned long prot)
mutex_lock(&ashmem_mutex);
/* the user can only remove, not add, protection bits */
if (unlikely((asma->prot_mask & prot) != prot)) {
if ((asma->prot_mask & prot) != prot) {
ret = -EINVAL;
goto out;
}
@ -524,7 +524,7 @@ static int set_name(struct ashmem_area *asma, void __user *name)
local_name[ASHMEM_NAME_LEN - 1] = '\0';
mutex_lock(&ashmem_mutex);
/* cannot change an existing mapping's name */
if (unlikely(asma->file))
if (asma->file)
ret = -EINVAL;
else
strcpy(asma->name + ASHMEM_NAME_PREFIX_LEN, local_name);
@ -563,7 +563,7 @@ static int get_name(struct ashmem_area *asma, void __user *name)
* Now we are just copying from the stack variable to userland
* No lock held
*/
if (unlikely(copy_to_user(name, local_name, len)))
if (copy_to_user(name, local_name, len))
ret = -EFAULT;
return ret;
}
@ -701,25 +701,25 @@ static int ashmem_pin_unpin(struct ashmem_area *asma, unsigned long cmd,
size_t pgstart, pgend;
int ret = -EINVAL;
if (unlikely(copy_from_user(&pin, p, sizeof(pin))))
if (copy_from_user(&pin, p, sizeof(pin)))
return -EFAULT;
mutex_lock(&ashmem_mutex);
if (unlikely(!asma->file))
if (!asma->file)
goto out_unlock;
/* per custom, you can pass zero for len to mean "everything onward" */
if (!pin.len)
pin.len = PAGE_ALIGN(asma->size) - pin.offset;
if (unlikely((pin.offset | pin.len) & ~PAGE_MASK))
if ((pin.offset | pin.len) & ~PAGE_MASK)
goto out_unlock;
if (unlikely(((__u32)-1) - pin.offset < pin.len))
if (((__u32)-1) - pin.offset < pin.len)
goto out_unlock;
if (unlikely(PAGE_ALIGN(asma->size) < pin.offset + pin.len))
if (PAGE_ALIGN(asma->size) < pin.offset + pin.len)
goto out_unlock;
pgstart = pin.offset / PAGE_SIZE;
@ -856,7 +856,7 @@ static int __init ashmem_init(void)
ashmem_area_cachep = kmem_cache_create("ashmem_area_cache",
sizeof(struct ashmem_area),
0, 0, NULL);
if (unlikely(!ashmem_area_cachep)) {
if (!ashmem_area_cachep) {
pr_err("failed to create slab cache\n");
goto out;
}
@ -864,13 +864,13 @@ static int __init ashmem_init(void)
ashmem_range_cachep = kmem_cache_create("ashmem_range_cache",
sizeof(struct ashmem_range),
0, 0, NULL);
if (unlikely(!ashmem_range_cachep)) {
if (!ashmem_range_cachep) {
pr_err("failed to create slab cache\n");
goto out_free1;
}
ret = misc_register(&ashmem_misc);
if (unlikely(ret)) {
if (ret) {
pr_err("failed to register misc device!\n");
goto out_free2;
}