Hello Shawn Lin, The patch e77f847df54c: "PCI: rockchip: Add Rockchip PCIe controller support" from Sep 3, 2016, leads to the following static checker warning: drivers/pci/host/pcie-rockchip.c:552 rockchip_pcie_init_port() warn: mask and shift to zero drivers/pci/host/pcie-rockchip.c 549 550 /* Check the final link width from negotiated lane counter from MGMT */ 551 status = rockchip_pcie_read(rockchip, PCIE_CORE_CTRL); 552 status = 0x1 << ((status & PCIE_CORE_PL_CONF_LANE_MASK) >> 553 PCIE_CORE_PL_CONF_LANE_MASK); Presumably we should be shifting by PCIE_CORE_PL_CONF_LANE_SHIFT but this still looks all kind of jumbled up. 554 dev_dbg(dev, "current link width is x%d\n", status); 555 regards, dan carpenter -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
