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Commit f7929436 authored by Geliang Tang's avatar Geliang Tang Committed by Mark Brown
Browse files

spi: spidev: use memdup_user 



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

Signed-off-by: default avatarGeliang Tang <geliangtang@gmail.com>
Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 76bf5694

drivers/spi/spidev.c

+1 −9
Original line number Diff line number Diff line
@@ -324,7 +324,6 @@ static struct spi_ioc_transfer * 
spidev_get_ioc_message(unsigned int cmd, struct spi_ioc_transfer __user *u_ioc,

		unsigned *n_ioc)

{

	struct spi_ioc_transfer	*ioc;

	u32	tmp;



	/* Check type, command number and direction */
@@ -341,14 +340,7 @@ spidev_get_ioc_message(unsigned int cmd, struct spi_ioc_transfer __user *u_ioc, 
		return NULL;



	/* copy into scratch area */

	ioc = kmalloc(tmp, GFP_KERNEL);

	if (!ioc)

		return ERR_PTR(-ENOMEM);

	if (__copy_from_user(ioc, u_ioc, tmp)) {

		kfree(ioc);

		return ERR_PTR(-EFAULT);

	}

	return ioc;

	return memdup_user(u_ioc, tmp);

}



static long