[PATCH 7/7] media: ngene: don't try to memcpy from NULL

[Mauro Carvalho Chehab]

[drivers/media/pci/ngene/ngene-i2c.c:122] -> 
[drivers/media/pci/ngene/ngene-i2c.c:39]: (error) Null pointer dereference: out

Signed-off-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
---
 drivers/media/pci/ngene/ngene-i2c.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/ngene/ngene-i2c.c 
b/drivers/media/pci/ngene/ngene-i2c.c
index 2e9e9774dc6f..bfdb7286f6f0 100644
--- a/drivers/media/pci/ngene/ngene-i2c.c
+++ b/drivers/media/pci/ngene/ngene-i2c.c
@@ -36,7 +36,10 @@ static int ngene_command_i2c_read(struct ngene *dev, u8 adr,
        com.cmd.hdr.Opcode = CMD_I2C_READ;
        com.cmd.hdr.Length = outlen + 3;
        com.cmd.I2CRead.Device = adr << 1;
-       memcpy(com.cmd.I2CRead.Data, out, outlen);
+
+       if (out)
+               memcpy(com.cmd.I2CRead.Data, out, outlen);
+
        com.cmd.I2CRead.Data[outlen] = inlen;
        com.cmd.I2CRead.Data[outlen + 1] = 0;
        com.in_len = outlen + 3;
-- 
2.21.0