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vme: don't open-code fixed_size_llseek() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-08-19 11:28:35 -04:00
parent 91360b02ab
commit 594822918d
1 changed files with 3 additions and 25 deletions
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28
drivers/staging/vme/devices/vme_user.c
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@ -410,41 +410,19 @@ static ssize_t vme_user_write(struct file *file, const char __user *buf,
static loff_t vme_user_llseek(struct file *file, loff_t off, int whence) static loff_t vme_user_llseek(struct file *file, loff_t off, int whence)
{ {
loff_t absolute = -1;
unsigned int minor = MINOR(file_inode(file)->i_rdev); unsigned int minor = MINOR(file_inode(file)->i_rdev);
size_t image_size; size_t image_size;
loff_t res;
if (minor == CONTROL_MINOR) if (minor == CONTROL_MINOR)
return -EINVAL; return -EINVAL;
mutex_lock(&image[minor].mutex); mutex_lock(&image[minor].mutex);
image_size = vme_get_size(image[minor].resource); image_size = vme_get_size(image[minor].resource);
res = fixed_size_llseek(file, off, whence, image_size);
switch (whence) {
case SEEK_SET:
absolute = off;
break;
case SEEK_CUR:
absolute = file->f_pos + off;
break;
case SEEK_END:
absolute = image_size + off;
break;
default:
mutex_unlock(&image[minor].mutex);
return -EINVAL;
}
if ((absolute < 0) || (absolute >= image_size)) {
mutex_unlock(&image[minor].mutex);
return -EINVAL;
}
file->f_pos = absolute;
mutex_unlock(&image[minor].mutex); mutex_unlock(&image[minor].mutex);
return absolute; return res;
} }
/* /*