diff --git a/sound/soc/codecs/ac97.c b/sound/soc/codecs/ac97.c
index a1bbe16..fd101d4 100644
--- a/sound/soc/codecs/ac97.c
+++ b/sound/soc/codecs/ac97.c
@@ -13,6 +13,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <sound/core.h>
diff --git a/sound/soc/codecs/ad1836.c b/sound/soc/codecs/ad1836.c
index 3c80137..11b62de 100644
--- a/sound/soc/codecs/ad1836.c
+++ b/sound/soc/codecs/ad1836.c
@@ -17,6 +17,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
diff --git a/sound/soc/codecs/ad1938.c b/sound/soc/codecs/ad1938.c
index c233810..240cd15 100644
--- a/sound/soc/codecs/ad1938.c
+++ b/sound/soc/codecs/ad1938.c
@@ -27,6 +27,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
index 39c0f758..0420727 100644
--- a/sound/soc/codecs/ad1980.c
+++ b/sound/soc/codecs/ad1980.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
diff --git a/sound/soc/codecs/ad73311.c b/sound/soc/codecs/ad73311.c
index d2fcc60..475807b 100644
--- a/sound/soc/codecs/ad73311.c
+++ b/sound/soc/codecs/ad73311.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
diff --git a/sound/soc/codecs/ads117x.c b/sound/soc/codecs/ads117x.c
index cc96411..f8e75ed 100644
--- a/sound/soc/codecs/ads117x.c
+++ b/sound/soc/codecs/ads117x.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/device.h>
 #include <sound/core.h>
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c
index b68d99f..bdeb10d 100644
--- a/sound/soc/codecs/ak4104.c
+++ b/sound/soc/codecs/ak4104.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/soc.h>
 #include <sound/initval.h>
diff --git a/sound/soc/codecs/ak4535.c b/sound/soc/codecs/ak4535.c
index ff96656..352d1d0 100644
--- a/sound/soc/codecs/ak4535.c
+++ b/sound/soc/codecs/ak4535.c
@@ -19,6 +19,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c
index 3ef16bb..729859c 100644
--- a/sound/soc/codecs/ak4642.c
+++ b/sound/soc/codecs/ak4642.c
@@ -29,6 +29,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/ak4671.c b/sound/soc/codecs/ak4671.c
index 82fca28..926797a 100644
--- a/sound/soc/codecs/ak4671.c
+++ b/sound/soc/codecs/ak4671.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 #include <sound/initval.h>
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index dfbeb2d..81a62d1 100644
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -23,6 +23,7 @@
 
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/soc.h>
 #include <sound/initval.h>
diff --git a/sound/soc/codecs/cx20442.c b/sound/soc/codecs/cx20442.c
index e000cdf..9f169c4 100644
--- a/sound/soc/codecs/cx20442.c
+++ b/sound/soc/codecs/cx20442.c
@@ -14,6 +14,7 @@
  */
 
 #include <linux/tty.h>
+#include <linux/slab.h>
 
 #include <sound/core.h>
 #include <sound/initval.h>
diff --git a/sound/soc/codecs/da7210.c b/sound/soc/codecs/da7210.c
index cf2975a..366daf1 100644
--- a/sound/soc/codecs/da7210.c
+++ b/sound/soc/codecs/da7210.c
@@ -23,6 +23,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/pcm3008.c b/sound/soc/codecs/pcm3008.c
index 2afcd0a..5a5f187 100644
--- a/sound/soc/codecs/pcm3008.c
+++ b/sound/soc/codecs/pcm3008.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/gpio.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/initval.h>
diff --git a/sound/soc/codecs/ssm2602.c b/sound/soc/codecs/ssm2602.c
index d2ff1cd..29d0906 100644
--- a/sound/soc/codecs/ssm2602.c
+++ b/sound/soc/codecs/ssm2602.c
@@ -33,6 +33,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/stac9766.c b/sound/soc/codecs/stac9766.c
index 81b8c9df..3293629 100644
--- a/sound/soc/codecs/stac9766.c
+++ b/sound/soc/codecs/stac9766.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <sound/core.h>
diff --git a/sound/soc/codecs/tlv320aic23.c b/sound/soc/codecs/tlv320aic23.c
index da589d8..776b79c 100644
--- a/sound/soc/codecs/tlv320aic23.c
+++ b/sound/soc/codecs/tlv320aic23.c
@@ -25,6 +25,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/tlv320aic26.c b/sound/soc/codecs/tlv320aic26.c
index 357b609..b5b7d6a 100644
--- a/sound/soc/codecs/tlv320aic26.c
+++ b/sound/soc/codecs/tlv320aic26.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/sysfs.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index e4b946a..4a6d56c 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -39,6 +39,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index d50f169..d1e0e81 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -31,6 +31,7 @@
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
index 958d49c..569ad87 100644
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -26,6 +26,7 @@
 #include <linux/i2c.h>
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 #include <sound/tpa6130a2-plat.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index 6f5d4af..520ffd6 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -27,6 +27,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/i2c/twl.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/uda134x.c b/sound/soc/codecs/uda134x.c
index 3e99fe5..a8dcd5a 100644
--- a/sound/soc/codecs/uda134x.c
+++ b/sound/soc/codecs/uda134x.c
@@ -15,6 +15,7 @@
 
 #include <linux/module.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
diff --git a/sound/soc/codecs/wm2000.c b/sound/soc/codecs/wm2000.c
index 217b026..a34cbcf 100644
--- a/sound/soc/codecs/wm2000.c
+++ b/sound/soc/codecs/wm2000.c
@@ -32,6 +32,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/debugfs.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c
index df2c6d9..2e0772f 100644
--- a/sound/soc/codecs/wm8350.c
+++ b/sound/soc/codecs/wm8350.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/platform_device.h>
diff --git a/sound/soc/codecs/wm8400.c b/sound/soc/codecs/wm8400.c
index b432f4d..6acc885 100644
--- a/sound/soc/codecs/wm8400.c
+++ b/sound/soc/codecs/wm8400.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
diff --git a/sound/soc/codecs/wm8510.c b/sound/soc/codecs/wm8510.c
index af8cb69..9000b1d 100644
--- a/sound/soc/codecs/wm8510.c
+++ b/sound/soc/codecs/wm8510.c
@@ -19,6 +19,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8523.c b/sound/soc/codecs/wm8523.c
index d3a61d7..19cd472 100644
--- a/sound/soc/codecs/wm8523.c
+++ b/sound/soc/codecs/wm8523.c
@@ -19,6 +19,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8580.c b/sound/soc/codecs/wm8580.c
index d077df6..8cc9042 100644
--- a/sound/soc/codecs/wm8580.c
+++ b/sound/soc/codecs/wm8580.c
@@ -25,6 +25,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
diff --git a/sound/soc/codecs/wm8711.c b/sound/soc/codecs/wm8711.c
index 24a3560..8ca3812 100644
--- a/sound/soc/codecs/wm8711.c
+++ b/sound/soc/codecs/wm8711.c
@@ -20,6 +20,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8727.c b/sound/soc/codecs/wm8727.c
index 63a254e..1072621 100644
--- a/sound/soc/codecs/wm8727.c
+++ b/sound/soc/codecs/wm8727.c
@@ -13,6 +13,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
diff --git a/sound/soc/codecs/wm8728.c b/sound/soc/codecs/wm8728.c
index 3fb653b..07adc37 100644
--- a/sound/soc/codecs/wm8728.c
+++ b/sound/soc/codecs/wm8728.c
@@ -18,6 +18,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index 5a2619d..e7c6bf1 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -18,6 +18,7 @@
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/i2c.h>
+#include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
diff --git a/sound/soc/codecs/wm8750.c b/sound/soc/codecs/wm8750.c
index 475c67a..2916ed4 100644
--- a/sound/soc/codecs/wm8750.c
+++ b/sound/soc/codecs/wm8750.c
@@ -20,6 +20,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c
index c2444e7..613199a 100644
--- a/sound/soc/codecs/wm8753.c
+++ b/sound/soc/codecs/wm8753.c
@@ -40,6 +40,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8776.c b/sound/soc/codecs/wm8776.c
index 44e7d9d..60b1b3e 100644
--- a/sound/soc/codecs/wm8776.c
+++ b/sound/soc/codecs/wm8776.c
@@ -20,6 +20,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8900.c b/sound/soc/codecs/wm8900.c
index dbc368c0..b7fd96a 100644
--- a/sound/soc/codecs/wm8900.c
+++ b/sound/soc/codecs/wm8900.c
@@ -24,6 +24,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index 3595bd5..fa5f99f 100644
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -23,6 +23,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
index 593e47d..c6f0abc 100644
--- a/sound/soc/codecs/wm8904.c
+++ b/sound/soc/codecs/wm8904.c
@@ -19,6 +19,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8940.c b/sound/soc/codecs/wm8940.c
index 31e39ff..0c04b47 100644
--- a/sound/soc/codecs/wm8940.c
+++ b/sound/soc/codecs/wm8940.c
@@ -30,6 +30,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8955.c b/sound/soc/codecs/wm8955.c
index 615dab2..c8d7a80 100644
--- a/sound/soc/codecs/wm8955.c
+++ b/sound/soc/codecs/wm8955.c
@@ -18,6 +18,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index d07bcc1..f1e63e0 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -15,6 +15,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8961.c b/sound/soc/codecs/wm8961.c
index d2342c5..50634ab7 100644
--- a/sound/soc/codecs/wm8961.c
+++ b/sound/soc/codecs/wm8961.c
@@ -18,6 +18,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8971.c b/sound/soc/codecs/wm8971.c
index d9540d5..a65b781 100644
--- a/sound/soc/codecs/wm8971.c
+++ b/sound/soc/codecs/wm8971.c
@@ -20,6 +20,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
index ee637af..69708c4 100644
--- a/sound/soc/codecs/wm8974.c
+++ b/sound/soc/codecs/wm8974.c
@@ -18,6 +18,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8978.c b/sound/soc/codecs/wm8978.c
index 28bb59e..526f56b 100644
--- a/sound/soc/codecs/wm8978.c
+++ b/sound/soc/codecs/wm8978.c
@@ -19,6 +19,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8988.c b/sound/soc/codecs/wm8988.c
index 2862e4d..bb18c3e 100644
--- a/sound/soc/codecs/wm8988.c
+++ b/sound/soc/codecs/wm8988.c
@@ -19,6 +19,7 @@
 #include <linux/i2c.h>
 #include <linux/spi/spi.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8990.c b/sound/soc/codecs/wm8990.c
index 056b787..831f473 100644
--- a/sound/soc/codecs/wm8990.c
+++ b/sound/soc/codecs/wm8990.c
@@ -18,6 +18,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8993.c b/sound/soc/codecs/wm8993.c
index bf022f6..03e8b1a 100644
--- a/sound/soc/codecs/wm8993.c
+++ b/sound/soc/codecs/wm8993.c
@@ -18,6 +18,7 @@
 #include <linux/i2c.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 29f3771..8d1c637 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -19,6 +19,7 @@
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm9081.c b/sound/soc/codecs/wm9081.c
index c468497..3a184fc 100644
--- a/sound/soc/codecs/wm9081.c
+++ b/sound/soc/codecs/wm9081.c
@@ -18,6 +18,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
diff --git a/sound/soc/codecs/wm9705.c b/sound/soc/codecs/wm9705.c
index ec54c6d..8793341 100644
--- a/sound/soc/codecs/wm9705.c
+++ b/sound/soc/codecs/wm9705.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index e237bf6..2f48a8aa 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c
index ceb86b4..2fca514 100644
--- a/sound/soc/codecs/wm9713.c
+++ b/sound/soc/codecs/wm9713.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <sound/core.h>