1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 47c2d2763456..068c816e6942 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -24,6 +24,7 @@
  */
 
 #include <linux/poll.h>
+#include <linux/slab.h>
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
 
@@ -31,7 +32,7 @@
 
 enum tpm_const {
         TPM_MINOR = 224,        /* officially assigned */
-        TPM_BUFSIZE = 2048,
+        TPM_BUFSIZE = 4096,
         TPM_NUM_DEVICES = 256,
 };