diff options
Diffstat (limited to 'drivers/pci/host/pci-exynos.c')
| -rw-r--r-- | drivers/pci/host/pci-exynos.c | 34 |
1 files changed, 15 insertions, 19 deletions
diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci-exynos.c index c139237e0..f9f468d9a 100644 --- a/drivers/pci/host/pci-exynos.c +++ b/drivers/pci/host/pci-exynos.c @@ -316,9 +316,9 @@ static void exynos_pcie_assert_reset(struct pcie_port *pp) static int exynos_pcie_establish_link(struct pcie_port *pp) { - u32 val; - int count = 0; struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp); + u32 val; + unsigned int retries; if (dw_pcie_link_up(pp)) { dev_err(pp->dev, "Link already up\n"); @@ -357,27 +357,23 @@ static int exynos_pcie_establish_link(struct pcie_port *pp) PCIE_APP_LTSSM_ENABLE); /* check if the link is up or not */ - while (!dw_pcie_link_up(pp)) { - mdelay(100); - count++; - if (count == 10) { - while (exynos_phy_readl(exynos_pcie, - PCIE_PHY_PLL_LOCKED) == 0) { - val = exynos_blk_readl(exynos_pcie, - PCIE_PHY_PLL_LOCKED); - dev_info(pp->dev, "PLL Locked: 0x%x\n", val); - } - /* power off phy */ - exynos_pcie_power_off_phy(pp); - - dev_err(pp->dev, "PCIe Link Fail\n"); - return -EINVAL; + for (retries = 0; retries < 10; retries++) { + if (dw_pcie_link_up(pp)) { + dev_info(pp->dev, "Link up\n"); + return 0; } + mdelay(100); } - dev_info(pp->dev, "Link up\n"); + while (exynos_phy_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED) == 0) { + val = exynos_blk_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED); + dev_info(pp->dev, "PLL Locked: 0x%x\n", val); + } + /* power off phy */ + exynos_pcie_power_off_phy(pp); - return 0; + dev_err(pp->dev, "PCIe Link Fail\n"); + return -EINVAL; } static void exynos_pcie_clear_irq_pulse(struct pcie_port *pp) |