[PATCH 4/5] ACPI / sysfs: Fix an issue for LoadTable opcode
From: Lv Zheng <hidden>
Date: 2016-08-16 08:53:20
Also in:
lkml
Subsystem:
acpi, the rest · Maintainers:
"Rafael J. Wysocki", Linus Torvalds
OEM tables can be installed via RSDT/XSDT, in this case, they have already been created under /sys/firmware/acpi/tables. For this kind of tables, normally LoadTable opcode will be executed to load them. If LoadTable opcode is executed after acpi_sysfs_init(), acpi_sysfs_table_handler() will be invoked, thus a redundant table file will be created under /sys/firmware/acpi/tables/dynamic. Then running "acpidump" on such platform results in an error. Link: https://bugzilla.kernel.org/show_bug.cgi?id=150841 Reported-by: Jason Voelz <redacted> Signed-off-by: Lv Zheng <redacted> --- drivers/acpi/sysfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 358165e..f2fa363 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c@@ -383,7 +383,7 @@ acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context) struct acpi_table_attr *table_attr; switch (event) { - case ACPI_TABLE_EVENT_LOAD: + case ACPI_TABLE_EVENT_INSTALL: table_attr = kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); if (!table_attr)
@@ -397,7 +397,9 @@ acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context) } else list_add_tail(&table_attr->node, &acpi_table_attr_list); break; + case ACPI_TABLE_EVENT_LOAD: case ACPI_TABLE_EVENT_UNLOAD: + case ACPI_TABLE_EVENT_UNINSTALL: /* * we do not need to do anything right now * because the table is not deleted from the
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1.7.10