Hello Wu Zhangjin,
The patch 22c21003a91b: "MIPS: Lemote 2F: Add basic CS5536 VSM
support" from Nov 10, 2009, leads to the following static checker
warning:
arch/mips/loongson64/common/cs5536/cs5536_ohci.c:141 pci_ohci_read_reg()
warn: masked condition '(lo & 3840) == 11' is always false.
arch/mips/loongson64/common/cs5536/cs5536_ohci.c
135 case PCI_INTERRUPT_LINE:
136 conf_data =
137 CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_USB_INTR);
138 break;
139 case PCI_OHCI_INT_REG:
140 _rdmsr(DIVIL_MSR_REG(PIC_YSEL_LOW), &hi, &lo);
141 if ((lo & 0x00000f00) == CS5536_USB_INTR)
^^^^^^^^^^^^^^^
This is 11 so the condition can't be true. I don't know what was
intended.
142 conf_data = 1;
143 break;
144 default:
145 break;
146 }
regards,
dan carpenter
