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Input: edt-ft5x06 - return -EFAULT on copy_to_user() error 

copy_to_user() returns the number of bytes remaining, but we want a
negative error code here.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Axel Lin 2012-09-19 15:56:23 -07:00 committed by Dmitry Torokhov
parent 30ebb7fa0e
commit 35b1da4e1e
1 changed files with 6 additions and 3 deletions
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9
drivers/input/touchscreen/edt-ft5x06.c
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@ -566,9 +566,12 @@ static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file,
}
read = min_t(size_t, count, tsdata->raw_bufsize - *off);
error = copy_to_user(buf, tsdata->raw_buffer + *off, read);
if (!error)
*off += read;
if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) {
error = -EFAULT;
goto out;
}
*off += read;
out:
mutex_unlock(&tsdata->mutex);
return error ?: read;