From: Arnd Bergmann Date: Thu, 28 May 2015 14:00:46 +0000 (+0200) Subject: net: thunderx: add 64-bit dependency X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5e9615bfb9586055adfa32958b5fe69eec622354;p=linux-beck.git 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 --- diff --git a/drivers/net/ethernet/cavium/Kconfig b/drivers/net/ethernet/cavium/Kconfig index 6365fb4242be..fc3d8e3ee807 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