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Commit 0388fae4 authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
Browse files

uml: use simple_write_to_buffer() 



Simplify write file operation for mmapper by using
simple_write_to_buffer().

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 07ecb79f

arch/um/drivers/mmapper_kern.c

+1 −7
Original line number Diff line number Diff line
@@ -37,13 +37,7 @@ static ssize_t mmapper_write(struct file *file, const char __user *buf, 
	if (*ppos > mmapper_size)

		return -EINVAL;



	if (count > mmapper_size - *ppos)

		count = mmapper_size - *ppos;



	if (copy_from_user(&v_buf[*ppos], buf, count))

		return -EFAULT;



	return count;

	return simple_write_to_buffer(v_buf, mmapper_size, ppos, buf, count);

}



static long mmapper_ioctl(struct file *file, unsigned int cmd, unsigned long arg)