diff --git a/target/linux/arm64/config-default b/target/linux/arm64/config-default
index 92ec5521ae..d6f5ae656b 100644
--- a/target/linux/arm64/config-default
+++ b/target/linux/arm64/config-default
@@ -231,7 +231,6 @@ CONFIG_LOGO=y
 CONFIG_LOGO_LINUX_CLUT224=y
 # CONFIG_LOGO_LINUX_MONO is not set
 # CONFIG_LOGO_LINUX_VGA16 is not set
-CONFIG_LOG_BUF_SHIFT=14
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_MAGIC_SYSRQ=y
diff --git a/target/linux/malta/config-4.4 b/target/linux/malta/config-4.4
index 8352362293..7bcfaea5f3 100644
--- a/target/linux/malta/config-4.4
+++ b/target/linux/malta/config-4.4
@@ -166,7 +166,6 @@ CONFIG_KERNEL_GZIP=y
 CONFIG_LEGACY_PTYS=y
 CONFIG_LEGACY_PTY_COUNT=256
 CONFIG_LIBFDT=y
-CONFIG_LOG_BUF_SHIFT=15
 CONFIG_MD=y
 CONFIG_MIPS=y
 CONFIG_MIPS_BONITO64=y
diff --git a/target/linux/mvebu/config-4.4 b/target/linux/mvebu/config-4.4
index e84da0a4ee..163af67347 100644
--- a/target/linux/mvebu/config-4.4
+++ b/target/linux/mvebu/config-4.4
@@ -231,7 +231,6 @@ CONFIG_LEDS_TLC591XX=y
 CONFIG_LEDS_TRIGGER_USBDEV=y
 CONFIG_LIBFDT=y
 CONFIG_LOCK_SPIN_ON_OWNER=y
-CONFIG_LOG_BUF_SHIFT=14
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_MACH_ARMADA_370=y
diff --git a/target/linux/omap/config-4.4 b/target/linux/omap/config-4.4
index fddf1b2ecd..0b0639bbec 100644
--- a/target/linux/omap/config-4.4
+++ b/target/linux/omap/config-4.4
@@ -352,7 +352,6 @@ CONFIG_LOGO=y
 CONFIG_LOGO_LINUX_CLUT224=y
 CONFIG_LOGO_LINUX_MONO=y
 CONFIG_LOGO_LINUX_VGA16=y
-CONFIG_LOG_BUF_SHIFT=16
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 # CONFIG_MACH_NOKIA_RX51 is not set
diff --git a/target/linux/sunxi/config-4.4 b/target/linux/sunxi/config-4.4
index dbefd32636..40504941ab 100644
--- a/target/linux/sunxi/config-4.4
+++ b/target/linux/sunxi/config-4.4
@@ -292,7 +292,6 @@ CONFIG_LOGO=y
 CONFIG_LOGO_LINUX_CLUT224=y
 CONFIG_LOGO_LINUX_MONO=y
 CONFIG_LOGO_LINUX_VGA16=y
-CONFIG_LOG_BUF_SHIFT=19
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_MACH_SUN4I=y
diff --git a/target/linux/zynq/config-4.4 b/target/linux/zynq/config-4.4
index 719d4e8fe4..ea28550dfe 100644
--- a/target/linux/zynq/config-4.4
+++ b/target/linux/zynq/config-4.4
@@ -415,7 +415,6 @@ CONFIG_LEDS_TRIGGER_TRANSIENT=y
 CONFIG_LIBFDT=y
 CONFIG_LOCKD=y
 CONFIG_LOCK_SPIN_ON_OWNER=y
-CONFIG_LOG_BUF_SHIFT=14
 CONFIG_MACB=y
 CONFIG_MARVELL_PHY=y
 CONFIG_MDIO_BITBANG=y