From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 34674612E for ; Mon, 3 Apr 2023 14:21:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1CC7C433D2; Mon, 3 Apr 2023 14:21:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680531712; bh=7ndKNZWViU2f84b78ppPFmwaLXby3ksYxtK1B8Y+UM8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xXNMLXxbFuNB1fROAL1Ogw2U5/NIx39Jwp777vP93WQTfIslNlSW0d5yF+OrSVDe+ hAGj6vszS74DIrGkCOuRx6fE4SONL2g+olkqPQbc8/q3bwOluCkG3ITqNRL453cNJW 261qqM9/pP1icldSMnJ8jtFQf5Z3MAzms63gENxs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Radoslaw Tyl , Michal Swiatkowski , Tony Nguyen , Leon Romanovsky , Jakub Kicinski , Sasha Levin , Arpana Arland Subject: [PATCH 5.4 082/104] i40e: fix registers dump after run ethtool adapter self test Date: Mon, 3 Apr 2023 16:09:14 +0200 Message-Id: <20230403140407.341995705@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230403140403.549815164@linuxfoundation.org> References: <20230403140403.549815164@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Radoslaw Tyl [ Upstream commit c5cff16f461a4a434a9915a7be7ac9ced861a8a4 ] Fix invalid registers dump from ethtool -d ethX after adapter self test by ethtool -t ethY. It causes invalid data display. The problem was caused by overwriting i40e_reg_list[].elements which is common for ethtool self test and dump. Fixes: 22dd9ae8afcc ("i40e: Rework register diagnostic") Signed-off-by: Radoslaw Tyl Reviewed-by: Michal Swiatkowski Tested-by: Arpana Arland (A Contingent worker at Intel) Signed-off-by: Tony Nguyen Reviewed-by: Leon Romanovsky Link: https://lore.kernel.org/r/20230328172659.3906413-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/i40e/i40e_diag.c | 11 ++++++----- drivers/net/ethernet/intel/i40e/i40e_diag.h | 2 +- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_diag.c b/drivers/net/ethernet/intel/i40e/i40e_diag.c index ef4d3762bf371..ca229b0efeb65 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_diag.c +++ b/drivers/net/ethernet/intel/i40e/i40e_diag.c @@ -44,7 +44,7 @@ static i40e_status i40e_diag_reg_pattern_test(struct i40e_hw *hw, return 0; } -struct i40e_diag_reg_test_info i40e_reg_list[] = { +const struct i40e_diag_reg_test_info i40e_reg_list[] = { /* offset mask elements stride */ {I40E_QTX_CTL(0), 0x0000FFBF, 1, I40E_QTX_CTL(1) - I40E_QTX_CTL(0)}, @@ -78,27 +78,28 @@ i40e_status i40e_diag_reg_test(struct i40e_hw *hw) { i40e_status ret_code = 0; u32 reg, mask; + u32 elements; u32 i, j; for (i = 0; i40e_reg_list[i].offset != 0 && !ret_code; i++) { + elements = i40e_reg_list[i].elements; /* set actual reg range for dynamically allocated resources */ if (i40e_reg_list[i].offset == I40E_QTX_CTL(0) && hw->func_caps.num_tx_qp != 0) - i40e_reg_list[i].elements = hw->func_caps.num_tx_qp; + elements = hw->func_caps.num_tx_qp; if ((i40e_reg_list[i].offset == I40E_PFINT_ITRN(0, 0) || i40e_reg_list[i].offset == I40E_PFINT_ITRN(1, 0) || i40e_reg_list[i].offset == I40E_PFINT_ITRN(2, 0) || i40e_reg_list[i].offset == I40E_QINT_TQCTL(0) || i40e_reg_list[i].offset == I40E_QINT_RQCTL(0)) && hw->func_caps.num_msix_vectors != 0) - i40e_reg_list[i].elements = - hw->func_caps.num_msix_vectors - 1; + elements = hw->func_caps.num_msix_vectors - 1; /* test register access */ mask = i40e_reg_list[i].mask; - for (j = 0; j < i40e_reg_list[i].elements && !ret_code; j++) { + for (j = 0; j < elements && !ret_code; j++) { reg = i40e_reg_list[i].offset + (j * i40e_reg_list[i].stride); ret_code = i40e_diag_reg_pattern_test(hw, reg, mask); diff --git a/drivers/net/ethernet/intel/i40e/i40e_diag.h b/drivers/net/ethernet/intel/i40e/i40e_diag.h index c3340f320a18c..1db7c6d572311 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_diag.h +++ b/drivers/net/ethernet/intel/i40e/i40e_diag.h @@ -20,7 +20,7 @@ struct i40e_diag_reg_test_info { u32 stride; /* bytes between each element */ }; -extern struct i40e_diag_reg_test_info i40e_reg_list[]; +extern const struct i40e_diag_reg_test_info i40e_reg_list[]; i40e_status i40e_diag_reg_test(struct i40e_hw *hw); i40e_status i40e_diag_eeprom_test(struct i40e_hw *hw); -- 2.39.2