# \[net-next-2.6 3/9\] igb: Add check for invalid size to igb\_get\_invariants\_82575() - From: Jeff Kirsher \ - Date: 2011-05-04 19:30:46 - List: netdev - Page: https://ratatoskr.run/netdev/2011/05/10870267 - Thread: https://ratatoskr.run/netdev/2011/05/10870273/t.md ```text From: Carolyn Wyborny 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 Signed-off-by: Carolyn Wyborny Tested-by: Jeff Pieper Signed-off-by: Jeff Kirsher --- drivers/net/igb/e1000_82575.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c index 0cd41c4..0f563c8 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; -- 1.7.4.4 ```