diff options
| -rw-r--r-- | target/linux/arc770/config-4.4 | 5 | ||||
| -rw-r--r-- | target/linux/generic/patches-4.4/333-arc-enable-unaligned-access-in-kernel-mode.patch | 31 |
2 files changed, 34 insertions, 2 deletions
diff --git a/target/linux/arc770/config-4.4 b/target/linux/arc770/config-4.4 index c8f021dce2..87fd7e342f 100644 --- a/target/linux/arc770/config-4.4 +++ b/target/linux/arc770/config-4.4 @@ -19,7 +19,7 @@ CONFIG_ARC_DBG=y # CONFIG_ARC_DBG_TLB_MISS_COUNT is not set # CONFIG_ARC_DBG_TLB_PARANOIA is not set CONFIG_ARC_DW2_UNWIND=y -# CONFIG_ARC_EMUL_UNALIGNED is not set +CONFIG_ARC_EMUL_UNALIGNED=y # CONFIG_ARC_FPU_SAVE_RESTORE is not set CONFIG_ARC_HAS_DCACHE=y # CONFIG_ARC_HAS_DCCM is not set @@ -162,7 +162,8 @@ CONFIG_SRCU=y CONFIG_STACKTRACE=y CONFIG_STMMAC_ETH=y CONFIG_STMMAC_PLATFORM=y -# CONFIG_SUNXI_SRAM is not set +CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW=y +CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN=y CONFIG_TICK_CPU_ACCOUNTING=y CONFIG_UNINLINE_SPIN_UNLOCK=y CONFIG_USB_SUPPORT=y diff --git a/target/linux/generic/patches-4.4/333-arc-enable-unaligned-access-in-kernel-mode.patch b/target/linux/generic/patches-4.4/333-arc-enable-unaligned-access-in-kernel-mode.patch new file mode 100644 index 0000000000..76a9ce8968 --- /dev/null +++ b/target/linux/generic/patches-4.4/333-arc-enable-unaligned-access-in-kernel-mode.patch @@ -0,0 +1,31 @@ +From af737b55fc7c61f17da9ae89fba536e0a9338e98 Mon Sep 17 00:00:00 2001 +From: Alexey Brodkin <abrodkin@synopsys.com> +Date: Mon, 14 Mar 2016 17:26:34 +0300 +Subject: [PATCH] arc: enable unaligned access in kernel mode + +This enables misaligned access handling even in kernel mode. +Some wireless drivers (ath9k-htc and mt7601u) use misaligned accesses +here and there and to cope with that without fixing stuff in the drivers +we're just gracefully handling it on ARC. + +Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> +--- + arch/arc/kernel/unaligned.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/arch/arc/kernel/unaligned.c b/arch/arc/kernel/unaligned.c +index abd961f..0b0cc97 100644 +--- a/arch/arc/kernel/unaligned.c ++++ b/arch/arc/kernel/unaligned.c +@@ -206,7 +206,7 @@ int misaligned_fixup(unsigned long address, struct pt_regs *regs, + char buf[TASK_COMM_LEN]; + + /* handle user mode only and only if enabled by sysadmin */ +- if (!user_mode(regs) || !unaligned_enabled) ++ if (!unaligned_enabled) + return 1; + + if (no_unaligned_warning) { +-- +2.5.0 + |