1 files changed, 5 insertions, 60 deletions

diff --git a/drivers/misc/pvpanic/pvpanic-mmio.c b/drivers/misc/pvpanic/pvpanic-mmio.c
index eb97167c03fb..f3f2113a54a7 100644
--- a/drivers/misc/pvpanic/pvpanic-mmio.c
+++ b/drivers/misc/pvpanic/pvpanic-mmio.c
@@ -7,16 +7,15 @@
  *  Copyright (C) 2021 Oracle.
  */
 
+#include <linux/device.h>
+#include <linux/err.h>
 #include <linux/io.h>
-#include <linux/kernel.h>
+#include <linux/ioport.h>
 #include <linux/kexec.h>
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/types.h>
-#include <linux/slab.h>
-
-#include <uapi/misc/pvpanic.h>
 
 #include "pvpanic.h"
 
@@ -24,52 +23,9 @@ MODULE_AUTHOR("Hu Tao <hutao@cn.fujitsu.com>");
 MODULE_DESCRIPTION("pvpanic-mmio device driver");
 MODULE_LICENSE("GPL");
 
-static ssize_t capability_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct pvpanic_instance *pi = dev_get_drvdata(dev);
-
-	return sysfs_emit(buf, "%x\n", pi->capability);
-}
-static DEVICE_ATTR_RO(capability);
-
-static ssize_t events_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct pvpanic_instance *pi = dev_get_drvdata(dev);
-
-	return sysfs_emit(buf, "%x\n", pi->events);
-}
-
-static ssize_t events_store(struct device *dev, struct device_attribute *attr,
-			    const char *buf, size_t count)
-{
-	struct pvpanic_instance *pi = dev_get_drvdata(dev);
-	unsigned int tmp;
-	int err;
-
-	err = kstrtouint(buf, 16, &tmp);
-	if (err)
-		return err;
-
-	if ((tmp & pi->capability) != tmp)
-		return -EINVAL;
-
-	pi->events = tmp;
-
-	return count;
-}
-static DEVICE_ATTR_RW(events);
-
-static struct attribute *pvpanic_mmio_dev_attrs[] = {
-	&dev_attr_capability.attr,
-	&dev_attr_events.attr,
-	NULL
-};
-ATTRIBUTE_GROUPS(pvpanic_mmio_dev);
-
 static int pvpanic_mmio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct pvpanic_instance *pi;
 	struct resource *res;
 	void __iomem *base;
 
@@ -92,18 +48,7 @@ static int pvpanic_mmio_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	pi = devm_kmalloc(dev, sizeof(*pi), GFP_KERNEL);
-	if (!pi)
-		return -ENOMEM;
-
-	pi->base = base;
-	pi->capability = PVPANIC_PANICKED | PVPANIC_CRASH_LOADED;
-
-	/* initialize capability by RDPT */
-	pi->capability &= ioread8(base);
-	pi->events = pi->capability;
-
-	return devm_pvpanic_probe(dev, pi);
+	return devm_pvpanic_probe(dev, base);
 }
 
 static const struct of_device_id pvpanic_mmio_match[] = {
@@ -123,7 +68,7 @@ static struct platform_driver pvpanic_mmio_driver = {
 		.name = "pvpanic-mmio",
 		.of_match_table = pvpanic_mmio_match,
 		.acpi_match_table = pvpanic_device_ids,
-		.dev_groups = pvpanic_mmio_dev_groups,
+		.dev_groups = pvpanic_dev_groups,
 	},
 	.probe = pvpanic_mmio_probe,
 };