From: Sasha Neftin <sasha.neftin@intel.com>
Date: Sun, 18 Jul 2021 07:10:31 +0300
Subject: e1000e: Do not take care about recovery NVM checksum
Patch-mainline: v5.14
Git-commit: 4051f68318ca9f3d3becef3b54e70ad2c146df97
References: bsc#1158533
On new platforms, the NVM is read-only. Attempting to update the NVM
is causing a lockup to occur. Do not attempt to write to the NVM
on platforms where it's not supported.
Emit an error message when the NVM checksum is invalid.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=213667
Fixes: fb776f5d57ee ("e1000e: Add support for Tiger Lake")
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Suggested-by: Vitaly Lifshits <vitaly.lifshits@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/intel/e1000e/ich8lan.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -4109,13 +4109,17 @@ static s32 e1000_validate_nvm_checksum_i
return ret_val;
if (!(data & valid_csum_mask)) {
- data |= valid_csum_mask;
- ret_val = e1000_write_nvm(hw, word, 1, &data);
- if (ret_val)
- return ret_val;
- ret_val = e1000e_update_nvm_checksum(hw);
- if (ret_val)
- return ret_val;
+ e_dbg("NVM Checksum Invalid\n");
+
+ if (hw->mac.type < e1000_pch_cnp) {
+ data |= valid_csum_mask;
+ ret_val = e1000_write_nvm(hw, word, 1, &data);
+ if (ret_val)
+ return ret_val;
+ ret_val = e1000e_update_nvm_checksum(hw);
+ if (ret_val)
+ return ret_val;
+ }
}
return e1000e_validate_nvm_checksum_generic(hw);