e1000e: limit EEPROM size accesses

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

2 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index f7e1619b974e..9b46a00bb5f1 100644
--- a/drivers/net/e1000e/82571.c
+++ b/drivers/net/e1000e/82571.c
@@ -171,6 +171,10 @@ static s32 e1000_init_nvm_params_82571(struct e1000_hw *hw)
                  * for setting word_size.
                  */
                 size += NVM_WORD_SIZE_BASE_SHIFT;
+
+                /* EEPROM access above 16k is unsupported */
+                if (size > 14)
+                        size = 14;
                 nvm->word_size  = 1 << size;
                 break;
         }
diff --git a/drivers/net/e1000e/es2lan.c b/drivers/net/e1000e/es2lan.c
index e3f4aeefeae2..2689e4b83f9b 100644
--- a/drivers/net/e1000e/es2lan.c
+++ b/drivers/net/e1000e/es2lan.c
@@ -178,6 +178,10 @@ static s32 e1000_init_nvm_params_80003es2lan(struct e1000_hw *hw)
          * for setting word_size.
          */
         size += NVM_WORD_SIZE_BASE_SHIFT;
+
+        /* EEPROM access above 16k is unsupported */
+        if (size > 14)
+                size = 14;
         nvm->word_size  = 1 << size;
 
         return 0;