From 5d2e097919b0e3cd71d2fe28b33edbae52e348de Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 28 May 2015 16:00:46 +0200 Subject: [PATCH] net: thunderx: add 64-bit dependency The thunderx ethernet driver fails to build on architectures that do not have an atomic readq() and writeq() function for 64-bit PCI bus access: drivers/net/ethernet/cavium/thunder/thunder_bgx.c: In function 'bgx_reg_read': include/asm-generic/io.h:195:23: error: implicit declaration of function 'readq' [-Werror=implicit-function-declaration] It seems impossible to get this driver to work on most 32-bit hardware, so it's better to add an explicit dependency, in order to let us keep building 'allmodconfig' kernels on all architectures. As the driver is meant for the internal hardware on an arm64 SoC, this is not a problem for usability. Allowing the build on all 64-bit architectures rather than just CONFIG_ARM64 on the other hand means that we get the benefit of build testing on x86. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/ethernet/cavium/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/cavium/Kconfig b/drivers/net/ethernet/cavium/Kconfig index 6365fb4242be8..fc3d8e3ee807d 100644 --- a/drivers/net/ethernet/cavium/Kconfig +++ b/drivers/net/ethernet/cavium/Kconfig @@ -4,7 +4,7 @@ config NET_VENDOR_CAVIUM tristate "Cavium ethernet drivers" - depends on PCI + depends on PCI && 64BIT ---help--- Enable support for the Cavium ThunderX Network Interface Controller (NIC). The NIC provides the controller and DMA -- 2.39.5