Now that we solely depend on the vendor pci id the station id will be
compared for a large number of pci device ids. Cache the station id to
avoid retreiving it from SMBIOSTable every time.
Signed-off-by: Tobias Schaffner <tobias.schaff...@siemens.com>
---
drivers/utils/simatic.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/utils/simatic.c b/drivers/utils/simatic.c
index a1c63cb..376dc42 100644
--- a/drivers/utils/simatic.c
+++ b/drivers/utils/simatic.c
@@ -20,6 +20,9 @@
#include "smbios.h"
#include "utils.h"
+static UINT32 station_id;
+static BOOLEAN station_id_cached;
+
static UINT32 get_station_id(SMBIOS_STRUCTURE_POINTER oem_strct)
{
SIMATIC_OEM_ENTRY *entry;
@@ -45,6 +48,9 @@ static UINT32 get_station_id(SMBIOS_STRUCTURE_POINTER
oem_strct)
UINT32 simatic_station_id(VOID)
{
+ if (station_id_cached)
+ return station_id;
+
SMBIOS_STRUCTURE_TABLE *smbios_table;
SMBIOS_STRUCTURE_POINTER smbios_struct;
EFI_STATUS status;
@@ -60,5 +66,8 @@ UINT32 simatic_station_id(VOID)
return 0;
}
- return get_station_id(smbios_struct);
+ station_id = get_station_id(smbios_struct);
+ station_id_cached = TRUE;
+
+ return station_id;
}
--
2.40.1
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