[um] hostaudio: don't open-code memdup_user() (1ceb3628) · Commits · 戴 / test

arch/um/drivers/hostaudio_kern.c

+3 −7

Original line number	Diff line number	Diff line
		@@ -105,13 +105,9 @@ static ssize_t hostaudio_write(struct file file, const char __user buffer,
		printk(KERN_DEBUG "hostaudio: write called, count = %d\n", count);
		#endif

		kbuf = kmalloc(count, GFP_KERNEL);
		if (kbuf == NULL)
		return -ENOMEM;

		err = -EFAULT;
		if (copy_from_user(kbuf, buffer, count))
		goto out;
		kbuf = memdup_user(buffer, count);
		if (IS_ERR(kbuf))
		return PTR_ERR(kbuf);

		err = os_write_file(state->fd, kbuf, count);
		if (err < 0)