On Fri, Oct 11, 2019 at 12:02:30PM +0300, Andy Shevchenko wrote: > No functional changes implied. [snip] > - while (true) { > + do { > pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status); > if (slot_status == (u16) ~0) { > ctrl_info(ctrl, "%s: no response from device\n", > @@ -81,11 +81,9 @@ static int pcie_poll_cmd(struct controller *ctrl, int timeout) > PCI_EXP_SLTSTA_CC); > return 1; > } > - if (timeout < 0) > - break; > msleep(10); > timeout -= 10; > - } > + } while (timeout > 0); > return 0; /* timeout */ > } If you really want to ensure no funcitonal change, I think the end of the loop needs to be 'while (timeout >= 0);'