[U-Boot] [PATCH] spmi: Fix sandbox spmi driver memory corruption

[Mateusz Kulikowski]

There is off-by-one error in sandbox_emul_gpio that causes
segfault of certain tests.

EMUL_GPIO_REG_END is the address of last valid (emulated) register.
This patch fixed this (by adding one more element to emulated register array).

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski at gmail.com>
---

 drivers/spmi/spmi-sandbox.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spmi/spmi-sandbox.c b/drivers/spmi/spmi-sandbox.c
index 2f0fea0..980aff2 100644
--- a/drivers/spmi/spmi-sandbox.c
+++ b/drivers/spmi/spmi-sandbox.c
@@ -35,7 +35,8 @@ struct sandbox_emul_fake_regs {
 };
 
 struct sandbox_emul_gpio {
-	struct sandbox_emul_fake_regs r[EMUL_GPIO_REG_END]; /* Fake registers */
+	/* Fake registers - need one more entry as REG_END is valid address. */
+	struct sandbox_emul_fake_regs r[EMUL_GPIO_REG_END + 1];
 };
 
 struct sandbox_spmi_priv {
-- 
2.5.0