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staging: vme_user: refactor llseek to switch(){} 

This makes vme_user_llseek ignore all minors that don't have llseek
implementation.

Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Cc: Igor Alekseev <igor.alekseev@itep.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Kalinkin 2015-05-28 15:07:02 +03:00 committed by Greg Kroah-Hartman
parent 75c66b6db7
commit 615c40dd9f
1 changed files with 10 additions and 8 deletions
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18
drivers/staging/vme/devices/vme_user.c
View File

@ -430,15 +430,17 @@ static loff_t vme_user_llseek(struct file *file, loff_t off, int whence)
size_t image_size;
loff_t res;
if (minor == CONTROL_MINOR)
return -EINVAL;
switch (type[minor]) {
case MASTER_MINOR:
case SLAVE_MINOR:
mutex_lock(&image[minor].mutex);
image_size = vme_get_size(image[minor].resource);
res = fixed_size_llseek(file, off, whence, image_size);
mutex_unlock(&image[minor].mutex);
return res;
}
mutex_lock(&image[minor].mutex);
image_size = vme_get_size(image[minor].resource);
res = fixed_size_llseek(file, off, whence, image_size);
mutex_unlock(&image[minor].mutex);
return res;
return -EINVAL;
}
/*