The patch below does not apply to the 5.0-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From e6fdd3bf5aecd8615f31a5128775b9abcf3e0d86 Mon Sep 17 00:00:00 2001
From: Jisheng Zhang Jisheng.Zhang@synaptics.com Date: Fri, 29 Mar 2019 11:58:53 +0000 Subject: [PATCH] PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify code
Use devm_pci_alloc_host_bridge() to simplify the error code path. This also fixes a leak in the dw_pcie_host_init() error path.
Signed-off-by: Jisheng Zhang Jisheng.Zhang@synaptics.com Signed-off-by: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Signed-off-by: Bjorn Helgaas bhelgaas@google.com Acked-by: Gustavo Pimentel gustavo.pimentel@synopsys.com CC: stable@vger.kernel.org # v4.13+
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index acc9be5cf34a..dcc7405aff9a 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -358,7 +358,7 @@ int dw_pcie_host_init(struct pcie_port *pp) dev_err(dev, "Missing *config* reg space\n"); }
- bridge = pci_alloc_host_bridge(0); + bridge = devm_pci_alloc_host_bridge(dev, 0); if (!bridge) return -ENOMEM;
@@ -369,7 +369,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
ret = devm_request_pci_bus_resources(dev, &bridge->windows); if (ret) - goto error; + return ret;
/* Get the I/O and memory ranges from DT */ resource_list_for_each_entry_safe(win, tmp, &bridge->windows) { @@ -413,8 +413,7 @@ int dw_pcie_host_init(struct pcie_port *pp) resource_size(pp->cfg)); if (!pci->dbi_base) { dev_err(dev, "Error with ioremap\n"); - ret = -ENOMEM; - goto error; + return -ENOMEM; } }
@@ -425,8 +424,7 @@ int dw_pcie_host_init(struct pcie_port *pp) pp->cfg0_base, pp->cfg0_size); if (!pp->va_cfg0_base) { dev_err(dev, "Error with ioremap in function\n"); - ret = -ENOMEM; - goto error; + return -ENOMEM; } }
@@ -436,8 +434,7 @@ int dw_pcie_host_init(struct pcie_port *pp) pp->cfg1_size); if (!pp->va_cfg1_base) { dev_err(dev, "Error with ioremap\n"); - ret = -ENOMEM; - goto error; + return -ENOMEM; } }
@@ -460,14 +457,14 @@ int dw_pcie_host_init(struct pcie_port *pp) pp->num_vectors == 0) { dev_err(dev, "Invalid number of vectors\n"); - goto error; + return -EINVAL; } }
if (!pp->ops->msi_host_init) { ret = dw_pcie_allocate_domains(pp); if (ret) - goto error; + return ret;
if (pp->msi_irq) irq_set_chained_handler_and_data(pp->msi_irq, @@ -476,7 +473,7 @@ int dw_pcie_host_init(struct pcie_port *pp) } else { ret = pp->ops->msi_host_init(pp); if (ret < 0) - goto error; + return ret; } }
@@ -516,8 +513,6 @@ int dw_pcie_host_init(struct pcie_port *pp) err_free_msi: if (pci_msi_enabled() && !pp->ops->msi_host_init) dw_pcie_free_msi(pp); -error: - pci_free_host_bridge(bridge); return ret; }