Unverified Commit a30f202f authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

Merge tag 'tegra-for-6.1-firmware' of... 

Merge tag 'tegra-for-6.1-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers

firmware: tegra: Changes for v6.1-rc1

A simple cleanup for user memory usage in the BPMP debugfs support.

* tag 'tegra-for-6.1-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  firmware: tegra: Switch over to memdup_user()

Link: https://lore.kernel.org/r/20220916101957.1635854-3-thierry.reding@gmail.com


Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parents 3879b660 fa586abc

drivers/firmware/tegra/bpmp-debugfs.c

+3 −10
Original line number Diff line number Diff line
@@ -377,18 +377,11 @@ static ssize_t bpmp_debug_store(struct file *file, const char __user *buf, 
	if (!filename)

		return -ENOENT;



	databuf = kmalloc(count, GFP_KERNEL);

	if (!databuf)

		return -ENOMEM;



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

		err = -EFAULT;

		goto free_ret;

	}

	databuf = memdup_user(buf, count);

	if (IS_ERR(databuf))

		return PTR_ERR(databuf);



	err = mrq_debug_write(bpmp, filename, databuf, count);



free_ret:

	kfree(databuf);



	return err ?: count;