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SubjectApplied "spi: spidev: use memdup_user" to the spi tree
The patch

spi: spidev: use memdup_user

has been applied to the spi tree at


All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
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From f7929436a286ca31f0365a7013de968017f76818 Mon Sep 17 00:00:00 2001
From: Geliang Tang <>
Date: Sat, 6 May 2017 23:42:17 +0800
Subject: [PATCH] spi: spidev: use memdup_user

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

Signed-off-by: Geliang Tang <>
Reviewed-by: Geert Uytterhoeven <>
Signed-off-by: Mark Brown <>
drivers/spi/spidev.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 3b570018705c..d4d2d8d9f3e7 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -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
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