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[linux] Free cached ACPI tables on shutdown 

Free any cached ACPI tables for the sake of neatness (and a clean
report from Valgrind).

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/310/head
Michael Brown 2021-03-02 23:56:11 +00:00
parent 3a58400121
commit 976839ae4c
1 changed files with 22 additions and 0 deletions
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22
src/interface/linux/linux_acpi.c
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@ -25,6 +25,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/linux_api.h> #include <ipxe/linux_api.h>
#include <ipxe/linux.h> #include <ipxe/linux.h>
#include <ipxe/list.h> #include <ipxe/list.h>
#include <ipxe/init.h>
#include <ipxe/acpi.h> #include <ipxe/acpi.h>
/** ACPI sysfs directory */ /** ACPI sysfs directory */
@ -170,4 +171,25 @@ static userptr_t linux_acpi_find ( uint32_t signature, unsigned int index ) {
return UNULL; return UNULL;
} }
/**
* Free cached ACPI data
*
*/
static void linux_acpi_shutdown ( int booting __unused ) {
struct linux_acpi_table *table;
struct linux_acpi_table *tmp;
list_for_each_entry_safe ( table, tmp, &linux_acpi_tables, list ) {
list_del ( &table->list );
free ( table->data );
free ( table );
}
}
/** ACPI shutdown function */
struct startup_fn linux_acpi_startup_fn __startup_fn ( STARTUP_NORMAL ) = {
.name = "linux_acpi",
.shutdown = linux_acpi_shutdown,
};
PROVIDE_ACPI ( linux, acpi_find, linux_acpi_find ); PROVIDE_ACPI ( linux, acpi_find, linux_acpi_find );