From 6c7ccb9700d48a6a4a6254f144e58329074fac9e Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Tue, 15 Feb 2022 11:23:36 +0100 Subject: [PATCH] arm: a37xx: pci: Register controller also when no PCIe card is connected MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Allow access to config space of PCIe Root Port (which is always present on the root bus) even when PCIe link is down or no card is connected. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese --- drivers/pci/pci-aardvark.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c index ccaeecaca8..c795ef10b8 100644 --- a/drivers/pci/pci-aardvark.c +++ b/drivers/pci/pci-aardvark.c @@ -645,11 +645,8 @@ retry: * @pcie: The PCI device to access * * Wait up to 1 second for link training to be accomplished. - * - * Return 1 (true) if link training ends up with link up success. - * Return 0 (false) if link training ends up with link up failure. */ -static int pcie_advk_wait_for_link(struct pcie_advk *pcie) +static void pcie_advk_wait_for_link(struct pcie_advk *pcie) { int retries; @@ -657,15 +654,13 @@ static int pcie_advk_wait_for_link(struct pcie_advk *pcie) for (retries = 0; retries < LINK_MAX_RETRIES; retries++) { if (pcie_advk_link_up(pcie)) { printf("PCIe: Link up\n"); - return 0; + return; } udelay(LINK_WAIT_TIMEOUT); } printf("PCIe: Link down\n"); - - return -ETIMEDOUT; } /* @@ -898,8 +893,7 @@ static int pcie_advk_setup_hw(struct pcie_advk *pcie) return -EINVAL; /* Wait for PCIe link up */ - if (pcie_advk_wait_for_link(pcie)) - return -ENXIO; + pcie_advk_wait_for_link(pcie); return 0; } -- 2.39.5