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11:47:41 +0000 X-SNPS-Relay: synopsys.com From: Gustavo Pimentel To: Jisheng Zhang , Kishon Vijay Abraham I , Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Jingoo Han , Kukjin Kim , Krzysztof Kozlowski , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Yue Wang , Kevin Hilman , Neil Armstrong , Jerome Brunet , Martin Blumenstingl , Jesper Nilsson , Xiaowei Song , Binghui Wang , Andy Gross , Bjorn Andersson , Stanimir Varbanov , Pratyush Anand , Thierry Reding , Jonathan Hunter , Kunihiko Hayashi , Masahiro Yamada Subject: RE: [PATCH v2 2/5] PCI: dwc: Check alloc_page() return value Thread-Topic: [PATCH v2 2/5] PCI: dwc: Check alloc_page() return value Thread-Index: AQHWkmNVdfDcCP1yiU+UsZH88KvvBql3rAgw Date: Thu, 24 Sep 2020 11:47:41 +0000 Message-ID: References: <20200924190421.549cb8fc@xhacker.debian> <20200924190623.3251c2ac@xhacker.debian> In-Reply-To: <20200924190623.3251c2ac@xhacker.debian> Accept-Language: en-US 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"linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On Thu, Sep 24, 2020 at 12:6:23, Jisheng Zhang wrote: > We need to check alloc_page() succeed or not before continuing. > > Signed-off-by: Jisheng Zhang > --- > drivers/pci/controller/dwc/pcie-designware-host.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c > index 0a19de946351..9e04e8ef3aa4 100644 > --- a/drivers/pci/controller/dwc/pcie-designware-host.c > +++ b/drivers/pci/controller/dwc/pcie-designware-host.c > @@ -303,6 +303,11 @@ void dw_pcie_msi_init(struct pcie_port *pp) > u64 msi_target; > > pp->msi_page = alloc_page(GFP_KERNEL); > + if (!pp->msi_page) { > + dev_err(dev, "Failed to alloc MSI page\n"); > + return; > + } > + > pp->msi_data = dma_map_page(dev, pp->msi_page, 0, PAGE_SIZE, > DMA_FROM_DEVICE); > if (dma_mapping_error(dev, pp->msi_data)) { > -- > 2.28.0 Acked-by: Gustavo Pimentel _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic