oxnas: remove support for pre-4.4 kernels from drivers

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

target/linux/oxnas/files/arch/arm/mach-oxnas/mach-ox820.c

@@ -8,7 +8,6 @@
 #include <linux/slab.h>
 #include <linux/gfp.h>
 #include <linux/reset.h>
-#include <linux/version.h>
 #include <asm/mach-types.h>
 #include <asm/mach/map.h>
 #include <asm/mach/arch.h>
@@ -74,11 +73,7 @@ static void __init ox820_dt_init(void)
 static void __init ox820_timer_init(void)
 {
 	of_clk_init(NULL);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-	clocksource_of_init();
-#else
 	clocksource_probe();
-#endif
 }
 
 void ox820_init_early(void)

target/linux/oxnas/files/drivers/irqchip/irq-rps.c

@@ -6,13 +6,7 @@
 #include <linux/irqchip/chained_irq.h>
 #include <linux/err.h>
 #include <linux/io.h>
-#include <linux/version.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-# include "irqchip.h"
-#else
-# include <linux/irqchip.h>
-#endif
+#include <linux/irqchip.h>
 
 struct rps_chip_data {
 	void __iomem *base;
@@ -62,11 +56,7 @@ static int rps_irq_domain_xlate(struct irq_domain *d,
 				unsigned long *out_hwirq,
 				unsigned int *out_type)
 {
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-	if (d->of_node != controller)
-#else
 	if (irq_domain_get_of_node(d) != controller)
-#endif
 		return -EINVAL;
 	if (intsize < 1)
 		return -EINVAL;
@@ -82,11 +72,7 @@ static int rps_irq_domain_map(struct irq_domain *d, unsigned int irq,
 				irq_hw_number_t hw)
 {
 	irq_set_chip_and_handler(irq, &rps_chip, handle_level_irq);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-	set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-#else
 	irq_set_probe(irq);
-#endif
 	irq_set_chip_data(irq, d->host_data);
 	return 0;
 }
@@ -96,11 +82,7 @@ const struct irq_domain_ops rps_irq_domain_ops = {
 	.xlate = rps_irq_domain_xlate,
 };
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-static void rps_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
-#else
 static void rps_handle_cascade_irq(struct irq_desc *desc)
-#endif
 {
 	struct rps_chip_data *chip_data = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
@@ -114,11 +96,7 @@ static void rps_handle_cascade_irq(struct irq_desc *desc)
 	cascade_irq = irq_find_mapping(chip_data->domain, rps_irq);
 
 	if (unlikely(rps_irq >= RPS_IRQ_COUNT))
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-		handle_bad_irq(cascade_irq, desc);
-#else
 		handle_bad_irq(desc);
-#endif
 	else
 		generic_handle_irq(cascade_irq);
 

target/linux/oxnas/files/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c

@@ -25,7 +25,6 @@
 #include <linux/regmap.h>
 #include <linux/reset.h>
 #include <linux/stmmac.h>
-#include <linux/version.h>
 
 #include <mach/hardware.h>
 
@@ -92,37 +91,21 @@ static void oxnas_gmac_exit(struct platform_device *pdev, void *priv)
 	}
 }
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-static void *oxnas_gmac_probe(struct platform_device *pdev)
-{
-#else
 static int oxnas_gmac_probe(struct platform_device *pdev)
 {
 	struct plat_stmmacenet_data *plat_dat;
 	struct stmmac_resources stmmac_res;
 	int			ret;
-#endif
 	struct device		*dev = &pdev->dev;
 	struct oxnas_gmac	*bsp_priv;
 
 	bsp_priv = devm_kzalloc(dev, sizeof(*bsp_priv), GFP_KERNEL);
 	if (!bsp_priv)
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-		return ERR_PTR(-ENOMEM);
-#else
 		return -ENOMEM;
-#endif
 	bsp_priv->clk = devm_clk_get(dev, "gmac");
 	if (IS_ERR(bsp_priv->clk))
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-		return bsp_priv->clk;
-#else
 		return PTR_ERR(bsp_priv->clk);
-#endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-	return bsp_priv;
-#else
 	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
 	if (ret)
 		return ret;
@@ -140,17 +123,8 @@ static int oxnas_gmac_probe(struct platform_device *pdev)
 		return ret;
 
 	return stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
-#endif
 }
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-const struct stmmac_of_data oxnas_gmac_data = {
-	.has_gmac = 1,
-	.setup = oxnas_gmac_probe,
-	.init = oxnas_gmac_init,
-	.exit = oxnas_gmac_exit,
-};
-#else
 static const struct of_device_id oxnas_gmac_match[] = {
 	{ .compatible = "plxtech,nas782x-gmac" },
 	{ }
@@ -167,6 +141,5 @@ static struct platform_driver oxnas_gmac_driver = {
 	},
 };
 module_platform_driver(oxnas_gmac_driver);
-#endif
 
 MODULE_LICENSE("GPL v2");

target/linux/oxnas/files/drivers/pinctrl/pinctrl-oxnas.c

@@ -27,7 +27,6 @@
 /* Since we request GPIOs from ourself */
 #include <linux/pinctrl/consumer.h>
 #include <linux/spinlock.h>
-#include <linux/version.h>
 
 #include "core.h"
 
@@ -1200,11 +1199,7 @@ static struct irq_chip gpio_irqchip = {
 	.irq_set_type	= gpio_irq_type,
 };
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
-#else
 static void gpio_irq_handler(struct irq_desc *desc)
-#endif
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct irq_data *idata = irq_desc_get_irq_data(desc);
@@ -1245,9 +1240,6 @@ static int oxnas_gpio_irq_map(struct irq_domain *h, unsigned int virq,
 	irq_set_lockdep_class(virq, &gpio_lock_class);
 
 	irq_set_chip_and_handler(virq, &gpio_irqchip, handle_edge_irq);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)
-	set_irq_flags(virq, IRQF_VALID);
-#endif
 	irq_set_chip_data(virq, oxnas_gpio);
 
 	return 0;