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Commit 37832251 authored by Geliang Tang's avatar Geliang Tang Committed by Michael Ellerman
Browse files

powerpc/pseries: use memdup_user_nul 



Use memdup_user_nul() helper instead of open-coding to simplify the code.

Signed-off-by: default avatarGeliang Tang <geliangtang@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 446183e4

arch/powerpc/platforms/pseries/reconfig.c

+3 −10
Original line number Diff line number Diff line
@@ -367,16 +367,9 @@ static ssize_t ofdt_write(struct file *file, const char __user *buf, size_t coun 
	char *kbuf;

	char *tmp;



	if (!(kbuf = kmalloc(count + 1, GFP_KERNEL))) {

		rv = -ENOMEM;

		goto out;

	}

	if (copy_from_user(kbuf, buf, count)) {

		rv = -EFAULT;

		goto out;

	}



	kbuf[count] = '\0';

	kbuf = memdup_user_nul(buf, count);

	if (IS_ERR(kbuf))

		return PTR_ERR(kbuf);



	tmp = strchr(kbuf, ' ');

	if (!tmp) {