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McKenney" , Mahesh J Salgaonkar , Oliver O'Halloran , Kai-Heng Feng , Keith Busch , Robert Richter , Terry Bowman , Shiju Jose , Dave Jiang , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Bjorn Helgaas , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= Subject: [PATCH v7 08/17] PCI/AER: Initialize aer_err_info before using it Date: Tue, 20 May 2025 16:50:25 -0500 Message-ID: <20250520215047.1350603-9-helgaas@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250520215047.1350603-1-helgaas@kernel.org> References: <20250520215047.1350603-1-helgaas@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Bjorn Helgaas Previously the struct aer_err_info "e_info" was allocated on the stack without being initialized, so it contained junk except for the fields we explicitly set later. Initialize "e_info" at declaration with a designated initializer list, which initializes the other members to zero. Signed-off-by: Bjorn Helgaas Tested-by: Krzysztof Wilczyński Reviewed-by: Kuppuswamy Sathyanarayanan Reviewed-by: Ilpo Järvinen --- drivers/pci/pcie/aer.c | 39 +++++++++++++++++---------------------- 1 file changed, 17 insertions(+), 22 deletions(-) diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 520c21ed4ba9..e6693f910a23 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -1289,9 +1289,9 @@ static void aer_isr_one_error_type(struct pci_dev *root, * @e_src: pointer to an error source */ static void aer_isr_one_error(struct pci_dev *root, - struct aer_err_source *e_src) + struct aer_err_source *e_src) { - struct aer_err_info e_info; + u32 status = e_src->status; pci_rootport_aer_stats_incr(root, e_src); @@ -1299,30 +1299,25 @@ static void aer_isr_one_error(struct pci_dev *root, * There is a possibility that both correctable error and * uncorrectable error being logged. Report correctable error first. */ - if (e_src->status & PCI_ERR_ROOT_COR_RCV) { - e_info.id = ERR_COR_ID(e_src->id); - e_info.severity = AER_CORRECTABLE; - - if (e_src->status & PCI_ERR_ROOT_MULTI_COR_RCV) - e_info.multi_error_valid = 1; - else - e_info.multi_error_valid = 0; + if (status & PCI_ERR_ROOT_COR_RCV) { + int multi = status & PCI_ERR_ROOT_MULTI_COR_RCV; + struct aer_err_info e_info = { + .id = ERR_COR_ID(e_src->id), + .severity = AER_CORRECTABLE, + .multi_error_valid = multi ? 1 : 0, + }; aer_isr_one_error_type(root, &e_info); } - if (e_src->status & PCI_ERR_ROOT_UNCOR_RCV) { - e_info.id = ERR_UNCOR_ID(e_src->id); - - if (e_src->status & PCI_ERR_ROOT_FATAL_RCV) - e_info.severity = AER_FATAL; - else - e_info.severity = AER_NONFATAL; - - if (e_src->status & PCI_ERR_ROOT_MULTI_UNCOR_RCV) - e_info.multi_error_valid = 1; - else - e_info.multi_error_valid = 0; + if (status & PCI_ERR_ROOT_UNCOR_RCV) { + int fatal = status & PCI_ERR_ROOT_FATAL_RCV; + int multi = status & PCI_ERR_ROOT_MULTI_UNCOR_RCV; + struct aer_err_info e_info = { + .id = ERR_UNCOR_ID(e_src->id), + .severity = fatal ? AER_FATAL : AER_NONFATAL, + .multi_error_valid = multi ? 1 : 0, + }; aer_isr_one_error_type(root, &e_info); } -- 2.43.0