From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bjorn Helgaas Subject: Re: [PATCH] PCI: Mediatek: Use resource_size function on resource object Date: Wed, 30 Jan 2019 09:41:11 -0600 Message-ID: <20190130154111.GC229773@google.com> References: <1546409033-20412-1-git-send-email-honghui.zhang@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1546409033-20412-1-git-send-email-honghui.zhang@mediatek.com> Sender: linux-kernel-owner@vger.kernel.org To: honghui.zhang@mediatek.com Cc: lorenzo.pieralisi@arm.com, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, youlin.pei@mediatek.com, jianjun.wang@mediatek.com List-Id: linux-mediatek@lists.infradead.org Please pay attention to the changelog conventions, e.g., next time use "PCI: mediatek: ..." so yours matches "git log --oneline drivers/pci/controller/pcie-mediatek.c" On Wed, Jan 02, 2019 at 02:03:53PM +0800, honghui.zhang@mediatek.com wrote: > From: Honghui Zhang > > drivers/pci/pcie-mediatek.c:720:13-16: WARNING: Suspicious code. resource_size is maybe missing with mem > > Generated by: scripts/coccinelle/api/resource_size.cocci This is not a changelog; it's only a restatement of the warning. Next time please include a description of the change. It's OK if it repeats the subject. > Signed-off-by: Honghui Zhang > --- > drivers/pci/controller/pcie-mediatek.c | 4 +--- > 1 file changed, 1 insertion(+), 3 deletions(-) > > diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c > index e307166..0168376 100644 > --- a/drivers/pci/controller/pcie-mediatek.c > +++ b/drivers/pci/controller/pcie-mediatek.c > @@ -654,7 +654,6 @@ static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port) > struct resource *mem = &pcie->mem; > const struct mtk_pcie_soc *soc = port->pcie->soc; > u32 val; > - size_t size; > int err; > > /* MT7622 platforms need to enable LTSSM and ASPM from PCIe subsys */ > @@ -706,8 +705,7 @@ static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port) > mtk_pcie_enable_msi(port); > > /* Set AHB to PCIe translation windows */ > - size = mem->end - mem->start; > - val = lower_32_bits(mem->start) | AHB2PCIE_SIZE(fls(size)); > + val = lower_32_bits(mem->start) | AHB2PCIE_SIZE(fls(resource_size(mem))); > writel(val, port->base + PCIE_AHB_TRANS_BASE0_L); > > val = upper_32_bits(mem->start); > -- > 2.6.4 >