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authorMinghuan Lian <Minghuan.Lian@freescale.com>2015-10-16 15:19:15 +0800
committerBjorn Helgaas <bhelgaas@google.com>2015-11-02 15:38:38 -0600
commit72f71afb86bcdbf9dc2261214bf346fad4e2efb0 (patch)
treebb0cec3b8db1b32d40bc4165deb9f150436284ca /drivers/pci
parentdf7701621b8ba6a5b387b451e409276ed9c034e5 (diff)
downloadlinux-72f71afb86bcdbf9dc2261214bf346fad4e2efb0.tar.bz2
PCI: layerscape: Remove ls_pcie_establish_link()
ls_pcie_establish_link() does not do any real operation, except to wait for the linkup establishment. In fact, this is not necessary. Moreover, each PCIe controller not inserted device will increase the Linux startup time about 200ms. Remove ls_pcie_establish_link(). Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/host/pci-layerscape.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/host/pci-layerscape.c
index b2328ea13dcf..6dd44a071240 100644
--- a/drivers/pci/host/pci-layerscape.c
+++ b/drivers/pci/host/pci-layerscape.c
@@ -11,7 +11,6 @@
*/
#include <linux/kernel.h>
-#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of_pci.h>
@@ -62,27 +61,12 @@ static int ls_pcie_link_up(struct pcie_port *pp)
return 1;
}
-static int ls_pcie_establish_link(struct pcie_port *pp)
-{
- unsigned int retries;
-
- for (retries = 0; retries < 200; retries++) {
- if (dw_pcie_link_up(pp))
- return 0;
- usleep_range(100, 1000);
- }
-
- dev_err(pp->dev, "phy link never came up\n");
- return -EINVAL;
-}
-
static void ls_pcie_host_init(struct pcie_port *pp)
{
struct ls_pcie *pcie = to_ls_pcie(pp);
u32 val;
dw_pcie_setup_rc(pp);
- ls_pcie_establish_link(pp);
/*
* LS1021A Workaround for internal TKT228622