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authorCarolyn Wyborny <carolyn.wyborny@intel.com>2011-05-04 08:29:51 +0400
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-05-04 23:09:53 +0400
commitf6b1bfd17d42f9dc1d799b7e0eed817ed75005ec (patch)
treec72bf2923be1ffdbc47234ce98b2d1930b50ad4d /drivers/net/igb
parentec7e97e9a0265255485e217f4f2d3513949e7083 (diff)
downloadlinux-f6b1bfd17d42f9dc1d799b7e0eed817ed75005ec.tar.xz
igb: Add check for invalid size to igb_get_invariants_82575()
Recent commits have changed how EEPROM size is checked and if the size word is misconfigured, the driver will fail to load. This patch adds a check for invalid size word in the EEPROM and uses default size instead for 82576 parts. Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/igb')
-rw-r--r--drivers/net/igb/e1000_82575.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c
index 0cd41c49bc17..0f563c8c5ffc 100644
--- a/drivers/net/igb/e1000_82575.c
+++ b/drivers/net/igb/e1000_82575.c
@@ -244,6 +244,14 @@ static s32 igb_get_invariants_82575(struct e1000_hw *hw)
*/
size += NVM_WORD_SIZE_BASE_SHIFT;
+ /*
+ * Check for invalid size
+ */
+ if ((hw->mac.type == e1000_82576) && (size > 15)) {
+ printk("igb: The NVM size is not valid, "
+ "defaulting to 32K.\n");
+ size = 15;
+ }
nvm->word_size = 1 << size;
if (nvm->word_size == (1 << 15))
nvm->page_size = 128;