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authorBjorn Helgaas <bhelgaas@google.com>2016-10-06 13:42:08 -0500
committerBjorn Helgaas <bhelgaas@google.com>2016-10-11 08:45:47 -0500
commitffe82fa66afb19c2d5a4b8a0da6d05df2b5a6dc5 (patch)
tree496e29516973fc4c4c6818237aa3a5029f5ab669 /drivers
parentca7b941c900f2b265e7a1ac18bb963ee7b31141d (diff)
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PCI: spear: Pass device-specific struct to internal functions
Only interfaces used from outside the driver, e.g., those called by the DesignWare core, need to accept pointers to the generic struct pcie_port. Internal interfaces can accept pointers to the device-specific struct, which makes them more straightforward. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/host/pcie-spear13xx.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/host/pcie-spear13xx.c
index 73f17dac1364..26e905d8922c 100644
--- a/drivers/pci/host/pcie-spear13xx.c
+++ b/drivers/pci/host/pcie-spear13xx.c
@@ -72,11 +72,11 @@ struct pcie_app_reg {
#define to_spear13xx_pcie(x) container_of(x, struct spear13xx_pcie, pp)
-static int spear13xx_pcie_establish_link(struct pcie_port *pp)
+static int spear13xx_pcie_establish_link(struct spear13xx_pcie *spear13xx_pcie)
{
- u32 val;
- struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
+ struct pcie_port *pp = &spear13xx_pcie->pp;
struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
+ u32 val;
u32 exp_cap_off = EXP_CAP_ID_OFFSET;
if (dw_pcie_link_up(pp)) {
@@ -133,9 +133,9 @@ static int spear13xx_pcie_establish_link(struct pcie_port *pp)
static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg)
{
- struct pcie_port *pp = arg;
- struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
+ struct spear13xx_pcie *spear13xx_pcie = arg;
struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
+ struct pcie_port *pp = &spear13xx_pcie->pp;
unsigned int status;
status = readl(&app_reg->int_sts);
@@ -150,9 +150,9 @@ static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg)
return IRQ_HANDLED;
}
-static void spear13xx_pcie_enable_interrupts(struct pcie_port *pp)
+static void spear13xx_pcie_enable_interrupts(struct spear13xx_pcie *spear13xx_pcie)
{
- struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
+ struct pcie_port *pp = &spear13xx_pcie->pp;
struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
/* Enable MSI interrupt */
@@ -176,8 +176,10 @@ static int spear13xx_pcie_link_up(struct pcie_port *pp)
static void spear13xx_pcie_host_init(struct pcie_port *pp)
{
- spear13xx_pcie_establish_link(pp);
- spear13xx_pcie_enable_interrupts(pp);
+ struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pp);
+
+ spear13xx_pcie_establish_link(spear13xx_pcie);
+ spear13xx_pcie_enable_interrupts(spear13xx_pcie);
}
static struct pcie_host_ops spear13xx_pcie_host_ops = {
@@ -185,9 +187,10 @@ static struct pcie_host_ops spear13xx_pcie_host_ops = {
.host_init = spear13xx_pcie_host_init,
};
-static int spear13xx_add_pcie_port(struct pcie_port *pp,
- struct platform_device *pdev)
+static int spear13xx_add_pcie_port(struct spear13xx_pcie *spear13xx_pcie,
+ struct platform_device *pdev)
{
+ struct pcie_port *pp = &spear13xx_pcie->pp;
struct device *dev = &pdev->dev;
int ret;
@@ -198,7 +201,7 @@ static int spear13xx_add_pcie_port(struct pcie_port *pp,
}
ret = devm_request_irq(dev, pp->irq, spear13xx_pcie_irq_handler,
IRQF_SHARED | IRQF_NO_THREAD,
- "spear1340-pcie", pp);
+ "spear1340-pcie", spear13xx_pcie);
if (ret) {
dev_err(dev, "failed to request irq %d\n", pp->irq);
return ret;
@@ -268,7 +271,7 @@ static int spear13xx_pcie_probe(struct platform_device *pdev)
if (of_property_read_bool(np, "st,pcie-is-gen1"))
spear13xx_pcie->is_gen1 = true;
- ret = spear13xx_add_pcie_port(pp, pdev);
+ ret = spear13xx_add_pcie_port(spear13xx_pcie, pdev);
if (ret < 0)
goto fail_clk;