3 files changed, 17 insertions, 34 deletions

diff --git a/drivers/staging/fieldbus/anybuss/Kconfig b/drivers/staging/fieldbus/anybuss/Kconfig
index 8bc3d9a87743..635a0a7b7dd2 100644
--- a/drivers/staging/fieldbus/anybuss/Kconfig
+++ b/drivers/staging/fieldbus/anybuss/Kconfig
@@ -14,6 +14,7 @@ if HMS_ANYBUSS_BUS
 config ARCX_ANYBUS_CONTROLLER
 	tristate "Arcx Anybus-S Controller"
 	depends on OF && GPIOLIB && HAS_IOMEM && REGULATOR
+	select REGMAP_MMIO
 	help
 	  Select this to get support for the Arcx Anybus controller.
 	  It connects to the SoC via a parallel memory bus, and
diff --git a/drivers/staging/fieldbus/anybuss/arcx-anybus.c b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
index a167fb68e355..2ecffa42e561 100644
--- a/drivers/staging/fieldbus/anybuss/arcx-anybus.c
+++ b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
@@ -111,49 +111,31 @@ static void export_reset_1(struct device *dev, bool assert)
  * at a time for now.
  */
 
-static int read_reg_bus(void *context, unsigned int reg,
-			unsigned int *val)
-{
-	void __iomem *base = context;
-
-	*val = readb(base + reg);
-	return 0;
-}
-
-static int write_reg_bus(void *context, unsigned int reg,
-			 unsigned int val)
-{
-	void __iomem *base = context;
-
-	writeb(val, base + reg);
-	return 0;
-}
+static const struct regmap_config arcx_regmap_cfg = {
+	.reg_bits = 16,
+	.val_bits = 8,
+	.max_register = 0x7ff,
+	.use_single_read = true,
+	.use_single_write = true,
+	/*
+	 * single-byte parallel bus accesses are atomic, so don't
+	 * require any synchronization.
+	 */
+	.disable_locking = true,
+};
 
 static struct regmap *create_parallel_regmap(struct platform_device *pdev,
 					     int idx)
 {
-	struct regmap_config regmap_cfg = {
-		.reg_bits = 11,
-		.val_bits = 8,
-		/*
-		 * single-byte parallel bus accesses are atomic, so don't
-		 * require any synchronization.
-		 */
-		.disable_locking = true,
-		.reg_read = read_reg_bus,
-		.reg_write = write_reg_bus,
-	};
 	struct resource *res;
 	void __iomem *base;
 	struct device *dev = &pdev->dev;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, idx + 1);
-	if (resource_size(res) < (1 << regmap_cfg.reg_bits))
-		return ERR_PTR(-EINVAL);
 	base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(base))
 		return ERR_CAST(base);
-	return devm_regmap_init(dev, NULL, base, &regmap_cfg);
+	return devm_regmap_init_mmio(dev, base, &arcx_regmap_cfg);
 }
 
 static struct anybuss_host *
diff --git a/drivers/staging/fieldbus/dev_core.c b/drivers/staging/fieldbus/dev_core.c
index 60b85140675a..f6f5b92ba914 100644
--- a/drivers/staging/fieldbus/dev_core.c
+++ b/drivers/staging/fieldbus/dev_core.c
@@ -211,16 +211,16 @@ static ssize_t fieldbus_write(struct file *filp, const char __user *buf,
 	return fbdev->write_area(fbdev, buf, size, offset);
 }
 
-static unsigned int fieldbus_poll(struct file *filp, poll_table *wait)
+static __poll_t fieldbus_poll(struct file *filp, poll_table *wait)
 {
 	struct fb_open_file *of = filp->private_data;
 	struct fieldbus_dev *fbdev = of->fbdev;
-	unsigned int mask = POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM;
+	__poll_t mask = EPOLLIN | EPOLLRDNORM | EPOLLOUT | EPOLLWRNORM;
 
 	poll_wait(filp, &fbdev->dc_wq, wait);
 	/* data changed ? */
 	if (fbdev->dc_event != of->dc_event)
-		mask |= POLLPRI | POLLERR;
+		mask |= EPOLLPRI | EPOLLERR;
 	return mask;
 }