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Subject[PATCH 56/74] lto, workaround: Add workaround for missing LTO symbols in igb
Date
From: Andi Kleen <ak@linux.intel.com>

The gcc 4.7 LTO with -fno-toplevel-reorder sometimes drops data
variables. These show up as undefined symbols at link time.
As a workaround just make a few where it happened visible for now.

There isl nothing wrong with this driver, just a toolchain problem.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
drivers/net/ethernet/intel/igb/e1000_82575.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index ba994fb..86b985a 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -2254,7 +2254,8 @@ out:
return ret_val;
}

-static struct e1000_mac_operations e1000_mac_ops_82575 = {
+/* Workaround for LTO bug */
+__visible struct e1000_mac_operations e1000_mac_ops_82575 = {
.init_hw = igb_init_hw_82575,
.check_for_link = igb_check_for_link_82575,
.rar_set = igb_rar_set,
@@ -2262,13 +2263,13 @@ static struct e1000_mac_operations e1000_mac_ops_82575 = {
.get_speed_and_duplex = igb_get_speed_and_duplex_copper,
};

-static struct e1000_phy_operations e1000_phy_ops_82575 = {
+__visible struct e1000_phy_operations e1000_phy_ops_82575 = {
.acquire = igb_acquire_phy_82575,
.get_cfg_done = igb_get_cfg_done_82575,
.release = igb_release_phy_82575,
};

-static struct e1000_nvm_operations e1000_nvm_ops_82575 = {
+__visible struct e1000_nvm_operations e1000_nvm_ops_82575 = {
.acquire = igb_acquire_nvm_82575,
.read = igb_read_nvm_eerd,
.release = igb_release_nvm_82575,
--
1.7.7.6


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