The patch titled
Subject: net: thunderx: add 64-bit dependency
has been added to the -mm tree. Its filename is
net-thunderx-add-64-bit-dependency.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/net-thunderx-add-64-bit-dependency.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/net-thunderx-add-64-bit-dependency.patch
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: 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 <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/cavium/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/net/ethernet/cavium/Kconfig~net-thunderx-add-64-bit-dependency drivers/net/ethernet/cavium/Kconfig
--- a/drivers/net/ethernet/cavium/Kconfig~net-thunderx-add-64-bit-dependency
+++ a/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
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
ocfs2-use-64bit-variables-to-track-heartbeat-time.patch
scsi-resolve-sg-buffer-const-ness-issue.patch
scsi-resolve-sg-buffer-const-ness-issue-fix.patch
linux-next.patch
net-thunderx-add-64-bit-dependency.patch
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