From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 27 Feb 2018 17:19:52 -0600 From: "Gustavo A. R. Silva" To: Andy Shevchenko , Bjorn Helgaas Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] PCI/ASPM: Change type of threshold_ns variable to u32 Message-ID: <20180227231952.GA9001@embeddedor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: It seems that the expression threshold_us * 1000 will never exceed the 32-bit limits [1]. So changing the type of threshold_ns from u64 to u32 seems sensible [2]. [1] https://marc.info/?l=linux-kernel&m=151855021100725&w=2 [2] https://marc.info/?l=linux-kernel&m=151976318924615&w=2 Addresses-Coverity-ID: 1462501 Signed-off-by: Gustavo A. R. Silva --- drivers/pci/pcie/aspm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 57feef2..8633fc4 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -322,7 +322,7 @@ static u32 calc_l1ss_pwron(struct pci_dev *pdev, u32 scale, u32 val) static void encode_l12_threshold(u32 threshold_us, u32 *scale, u32 *value) { - u64 threshold_ns = threshold_us * 1000; + u32 threshold_ns = threshold_us * 1000; /* See PCIe r3.1, sec 7.33.3 and sec 6.18 */ if (threshold_ns < 32) { -- 2.7.4