From ac10836b681289f7e430e52b106a209bbdcaa75e Mon Sep 17 00:00:00 2001 From: Yijing Wang Date: Fri, 19 Jun 2015 15:57:45 +0800 Subject: [PATCH] PCI: pciehp: Simplify pcie_poll_cmd() Move first slot status read into while to simplify code. Signed-off-by: Yijing Wang Signed-off-by: Bjorn Helgaas --- drivers/pci/hotplug/pciehp_hpc.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 2913f7e68a10..daf54bee720d 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -109,21 +109,17 @@ static int pcie_poll_cmd(struct controller *ctrl, int timeout) struct pci_dev *pdev = ctrl_dev(ctrl); u16 slot_status; - pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status); - if (slot_status & PCI_EXP_SLTSTA_CC) { - pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, - PCI_EXP_SLTSTA_CC); - return 1; - } - while (timeout > 0) { - msleep(10); - timeout -= 10; + while (true) { pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status); if (slot_status & PCI_EXP_SLTSTA_CC) { pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, PCI_EXP_SLTSTA_CC); return 1; } + if (timeout < 0) + break; + msleep(10); + timeout -= 10; } return 0; /* timeout */ }