[PATCH] ARM: mv78xx0: fix possible PCI buffer overflow

From: Arnd Bergmann
Date: Wed Jan 11 2017 - 08:42:38 EST


gcc-7.0 reports a potential array overflow:

arch/arm/mach-mv78xx0/pcie.c: In function 'mv78xx0_pcie_preinit':
arch/arm/mach-mv78xx0/pcie.c:81:4: error: output may be truncated before the last format character [-Werror=format-truncation=]

I haven't checked if this can actually happen, but making the
array one 32-bit word longer addresses the warning and makes
it completely safe.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
arch/arm/mach-mv78xx0/pcie.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c
index 13a7d72ee0c4..81ff4327a962 100644
--- a/arch/arm/mach-mv78xx0/pcie.c
+++ b/arch/arm/mach-mv78xx0/pcie.c
@@ -29,7 +29,7 @@ struct pcie_port {
u8 root_bus_nr;
void __iomem *base;
spinlock_t conf_lock;
- char mem_space_name[16];
+ char mem_space_name[20];
struct resource res;
};

--
2.9.0