On 2018-04-10 04:55, Keith Busch wrote:
On Mon, Apr 09, 2018 at 10:41:53AM -0400, Oza Pawandeep wrote:+/** + * pcie_wait_for_link - Wait for link till it's active/inactive + * @pdev: Bridge device + * @active: waiting for active or inactive ? + * + * Use this to wait till link becomes active or inactive. + */ +bool pcie_wait_for_link(struct pci_dev *pdev, bool active) +{ + int timeout = 1000; + bool ret; + u16 lnk_status; + + for (;;) { + pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lnk_status); + ret = !!(lnk_status & PCI_EXP_LNKSTA_DLLLA); + if (ret == active) + return true; + if (timeout <= 0) + break; + timeout -= 10; + }This is missing an msleep(10) at each iteration.
will take care.
+ + pci_info(pdev, "Data Link Layer Link Active not %s in 1000 msec\n", + active ? "set" : "cleared"); + + return false; +}
