GPE block driver update

GPE block driver update

[Yu, Luming]

Hi

If you missed the comments Len made for you latest gpe-block-driver patch several weeks ago.
I did it for you. The following patch is the incremental patch.

Thanks,
Luming

 Kconfig     |    4 ++--
 gpe-block.c |   24 ++++++++++++++++
 osl.c       |   21 +++++++++++
 3 files changed, 33 insertions(+), 16 deletions(-)
diff -BruN 0/drivers/acpi/gpe-block.c 1/drivers/acpi/gpe-block.c
--- 0/drivers/acpi/gpe-block.c	2005-06-08 15:21:41.000000000 +0800
+++ 1/drivers/acpi/gpe-block.c	2005-06-08 15:19:06.000000000 +0800
@@ -1,6 +1,8 @@
 /*
  * drivers/acpi/gpe-block.c
  *
+ *
+ * Copyright (c) Yu Luming for Intel 2005
  * Copyright (c) Matthew Wilcox for Hewlett Packard 2004
  *
  * This program is free software; you can redistribute it and/or modify
@@ -19,14 +21,14 @@
 
 MODULE_AUTHOR("Matthew Wilcox <willy-VXdhtT5mjnY@public.gmane.org>");
 MODULE_LICENSE("GPL");
-MODULE_VERSION("0.3");
+MODULE_VERSION("0.4");
 
 #define NAME "gpe-block"
 
 struct gpe_block {
 	struct acpi_generic_address address;
 	u32 register_count;
-	u32 interrupt_level;
+	u32 interrupt_number;
 };
 
 static acpi_status acpi_gpe_block_crs_irq(struct acpi_resource_ext_irq *irq,
@@ -34,7 +36,7 @@
 {
 	acpi_register_gsi(irq->interrupts[0], irq->edge_level,
 			irq->active_high_low);
-	data->interrupt_level = irq->interrupts[0];
+	data->interrupt_number= irq->interrupts[0];
 	return AE_OK;
 }
 
@@ -88,15 +90,20 @@
 	if (res->id != ACPI_RSTYPE_ADDRESS16 &&
 	    res->id != ACPI_RSTYPE_ADDRESS32 &&
 	    res->id != ACPI_RSTYPE_ADDRESS64)
-		return AE_OK;
+		return AE_BAD_ADDRESS;
 
 	acpi_resource_to_address64(res, &addr);
 
 	size = addr.max_address_range - addr.min_address_range + 1;
-	if (addr.resource_type == ACPI_MEMORY_RANGE) {
+	switch (addr.resource_type) {
+	case ACPI_MEMORY_RANGE:
 		release_mem_region(addr.min_address_range, size);
-	} else if (addr.resource_type == ACPI_IO_RANGE) {
+		break;
+	case ACPI_IO_RANGE:
 		release_region(addr.min_address_range, size);
+		break;
+	default:
+		return AE_BAD_ADDRESS;
 	}
 	return AE_OK;
 }
@@ -114,7 +121,7 @@
 		return -ENODEV;
 
 	acpi_install_gpe_block(device->handle, &block.address,
-			block.register_count, block.interrupt_level);
+			block.register_count, block.interrupt_number);
 
 	return AE_OK;
 }
@@ -131,7 +138,10 @@
 	if(!obj_desc)
 		goto Exit;
 	acpi_hw_disable_gpe_block(NULL, obj_desc->device.gpe_block);
+
+	/* Wait for the work queues to flush bfore we remove block*/
 	acpi_os_sleep(1);
+
 	acpi_os_wait_events_complete(NULL);
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS,
 			acpi_gpe_block_crs_remove, NULL);
diff -BruN 0/drivers/acpi/Kconfig 1/drivers/acpi/Kconfig
--- 0/drivers/acpi/Kconfig	2005-06-08 15:21:41.000000000 +0800
+++ 1/drivers/acpi/Kconfig	2005-06-08 15:14:30.000000000 +0800
@@ -146,10 +146,10 @@
 	  applications to perform basic fan control (on, off, status).
 
 config ACPI_GPE_BLOCK
-	tristate "GPE block"
+	bool "GPE block"
 	depends on ACPI_INTERPRETER
 	depends on !IA64_SGI_SN
-	default m
+	default n
 	help
 	  GPE block devices are used to expand the number of ACPI events
 	  available to the system.  Common uses include expansion chassis
diff -BruN 0/drivers/acpi/osl.c 1/drivers/acpi/osl.c
--- 0/drivers/acpi/osl.c	2005-06-08 15:21:35.000000000 +0800
+++ 1/drivers/acpi/osl.c	2005-06-08 15:14:09.000000000 +0800
@@ -279,16 +279,19 @@
 	return (*handler)(context) ? IRQ_HANDLED : IRQ_NONE;
 }
 
-struct acpi_dev_id *dev_id_list;
+static struct acpi_dev_id *dev_id_list;
 
 static void *alloc_dev_id(acpi_osd_handler handler, void *context, int irq)
 {
 	struct acpi_dev_id *irq_ctx = kmalloc(sizeof(*irq_ctx), GFP_KERNEL);
-	irq_ctx->handler = handler;
-	irq_ctx->context = context;
-	irq_ctx->irq = irq;
-	irq_ctx->next = dev_id_list;
-	dev_id_list = irq_ctx;
+	if (irq_ctx > 0) {
+		irq_ctx->handler = handler;
+		irq_ctx->context = context;
+		irq_ctx->irq = irq;
+		irq_ctx->next = dev_id_list;
+		dev_id_list = irq_ctx;
+	} else 
+		irq_ctx = NULL;
 	return irq_ctx;
 }
 
@@ -347,7 +350,11 @@
 	}
 
 	dev_id = alloc_dev_id(handler, context, irq);
-	if (request_irq(irq, acpi_irq, SA_SHIRQ, "acpi", dev_id)) {
+
+	if (!dev_id) {
+		printk(KERN_ERR PREFIX "alloc_dev_id failed\n");
+		return AE_NOT_ACQUIRED;
+	} else if (request_irq(irq, acpi_irq, SA_SHIRQ, "acpi", dev_id)) {
 		printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq);
 		free_dev_id(dev_id);
 		return AE_NOT_ACQUIRED;


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