ACPICA: Improve exception handling for GPE block installation.
1) Return an actual status value from acpi_ev_get_gpe_xrupt_block.
2) Don't clobber the status when exiting acpi_ev_install_gpe_block.
References: https://bugs.acpica.org/show_bug.cgi?id=1019
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c
index d3f5e1e..4d764e8 100644
--- a/drivers/acpi/acpica/evgpeutil.c
+++ b/drivers/acpi/acpica/evgpeutil.c
@@ -197,8 +197,9 @@
* FUNCTION: acpi_ev_get_gpe_xrupt_block
*
* PARAMETERS: interrupt_number - Interrupt for a GPE block
+ * gpe_xrupt_block - Where the block is returned
*
- * RETURN: A GPE interrupt block
+ * RETURN: Status
*
* DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
* block per unique interrupt level used for GPEs. Should be
@@ -207,7 +208,9 @@
*
******************************************************************************/
-struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number)
+acpi_status
+acpi_ev_get_gpe_xrupt_block(u32 interrupt_number,
+ struct acpi_gpe_xrupt_info ** gpe_xrupt_block)
{
struct acpi_gpe_xrupt_info *next_gpe_xrupt;
struct acpi_gpe_xrupt_info *gpe_xrupt;
@@ -221,7 +224,8 @@
next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head;
while (next_gpe_xrupt) {
if (next_gpe_xrupt->interrupt_number == interrupt_number) {
- return_PTR(next_gpe_xrupt);
+ *gpe_xrupt_block = next_gpe_xrupt;
+ return_ACPI_STATUS(AE_OK);
}
next_gpe_xrupt = next_gpe_xrupt->next;
@@ -231,7 +235,7 @@
gpe_xrupt = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_xrupt_info));
if (!gpe_xrupt) {
- return_PTR(NULL);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
gpe_xrupt->interrupt_number = interrupt_number;
@@ -250,6 +254,7 @@
} else {
acpi_gbl_gpe_xrupt_list_head = gpe_xrupt;
}
+
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
/* Install new interrupt handler if not SCI_INT */
@@ -259,14 +264,15 @@
acpi_ev_gpe_xrupt_handler,
gpe_xrupt);
if (ACPI_FAILURE(status)) {
- ACPI_ERROR((AE_INFO,
- "Could not install GPE interrupt handler at level 0x%X",
- interrupt_number));
- return_PTR(NULL);
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Could not install GPE interrupt handler at level 0x%X",
+ interrupt_number));
+ return_ACPI_STATUS(status);
}
}
- return_PTR(gpe_xrupt);
+ *gpe_xrupt_block = gpe_xrupt;
+ return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************