[flashrom] Fix write_page_write_jedec retry, mark W29C040P as OK

[Carl-Daniel Hailfinger]

The automatic retry in write_page_write_jedec didn't retry flashing the
correct range, essentially rendering the functionality useless. This
patch simplifies the code and fixes the bug.

Mark Winbond W29C040P as supported.

Signed-off-by: Carl-Daniel Hailfinger

Index: flashrom-write_page_write_jedec_retry/jedec.c
===================================================================
--- flashrom-write_page_write_jedec_retry/jedec.c	(Revision 756)
+++ flashrom-write_page_write_jedec_retry/jedec.c	(Arbeitskopie)
@@ -262,7 +262,7 @@
 int write_page_write_jedec(struct flashchip *flash, uint8_t *src,
    		   int start, int page_size)
 {
-	int i, tried = 0, start_index = 0, ok;
+	int i, tried = 0, ok;
    uint8_t *s = src;
    chipaddr bios = flash->virtual_memory;
    chipaddr dst = bios + start;
@@ -275,7 +275,7 @@
    chip_writeb(0xA0, bios + 0x5555);

/* transfer data from source to destination */
-	for (i = start_index; i < page_size; i++) {
+	for (i = 0; i < page_size; i++) {
    	/* If the data is 0xFF, don't program it */
    	if (*src != 0xFF)
    		chip_writeb(*src, dst);
@@ -290,7 +290,7 @@
    ok = !verify_range(flash, src, start, page_size, NULL);

if (!ok && tried++ < MAX_REFLASH_TRIES) {
-		start_index = i;
+		fprintf(stderr, "retrying.\n");
    	goto retry;
    }
    if (!ok) {
Index: flashrom-write_page_write_jedec_retry/flashchips.c
===================================================================
--- flashrom-write_page_write_jedec_retry/flashchips.c	(Revision 756)
+++ flashrom-write_page_write_jedec_retry/flashchips.c	(Arbeitskopie)
@@ -3060,7 +3060,7 @@
    	.model_id	= W_29C040P,
    	.total_size	= 512,
    	.page_size	= 256,
-		.tested		= TEST_UNTESTED,
+		.tested		= TEST_OK_PREW,
    	.probe		= probe_jedec,
    	.probe_timing	= 10, 
    	.erase		= erase_chip_jedec,