Kill global variables, constants and functions if local scope suffices

Constify variables where possible.
Initialize programmer-related variables explicitly in programmer_init to
allow running programmer_init from a clean state after
Prohibit registering programmer shutdown functions before init or after
Kill some dead code.
Rename global variables with namespace-polluting names.
Use a previously unused locking helper function in sst49lfxxxc.c.

This is needed for libflashrom.

Effects on the binary size of flashrom are minimal (300 bytes
shrinkage), but the data section shrinks by 4384 bytes, and that's a
good thing if flashrom is operating in constrained envionments.

Corresponding to flashrom svn r1068.

Signed-off-by: Carl-Daniel Hailfinger <>
Acked-by: Michael Karcher <>
diff --git a/drkaiser.c b/drkaiser.c
index f1078cb..3bbff7c 100644
--- a/drkaiser.c
+++ b/drkaiser.c
@@ -26,12 +26,12 @@
-struct pcidev_status drkaiser_pcidev[] = {
+const struct pcidev_status drkaiser_pcidev[] = {
 	{0x1803, 0x5057, OK, "Dr. Kaiser", "PC-Waechter (Actel FPGA)"},
-uint8_t *drkaiser_bar;
+static uint8_t *drkaiser_bar;
 int drkaiser_init(void)