From 3f0d97d97f2b539cf9ac746be4ec097259e6a8d0 Mon Sep 17 00:00:00 2001
From: Jean-Michel Hautbois <jean-michel.hautbois@vodalys.com>
Date: Tue, 5 Aug 2014 18:19:37 +0200
Subject: [PATCH] Lattice ECP3 FPGA: Check firmware pointer
This patch corrects a lack of testing.
If fw is NULL when calling firmware_load(), it results in a kernel oops.
Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@vodalys.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/misc/lattice-ecp3-config.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/misc/lattice-ecp3-config.c b/drivers/misc/lattice-ecp3-config.c
index 7ffdb589841e..7e1efd5f58f0 100644
--- a/drivers/misc/lattice-ecp3-config.c
+++ b/drivers/misc/lattice-ecp3-config.c
@@ -79,6 +79,11 @@ static void firmware_load(const struct firmware *fw, void *context)
u32 jedec_id;
u32 status;
+ if (fw == NULL) {
+ dev_err(&spi->dev, "Cannot load firmware, aborting\n");
+ return;
+ }
+
if (fw->size == 0) {
dev_err(&spi->dev, "Error: Firmware size is 0!\n");
return;
--
2.34.1