[flashrom] [PATCH] Clean up and fix jedec.c error handling

[Carl-Daniel Hailfinger]

jedec.c was missing error handling in a few cases. Fix.
jedec.c error handling used double negation in too many places for no
good reason. Clean up.

Signed-off-by: Carl-Daniel Hailfinger

Index: flashrom-jedec_errorhandling/jedec.c
===================================================================
--- flashrom-jedec_errorhandling/jedec.c	(Revision 777)
+++ flashrom-jedec_errorhandling/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, ok;
+	int i, tried = 0, failed;
    uint8_t *s = src;
    chipaddr bios = flash->virtual_memory;
    chipaddr dst = bios + start;
@@ -287,27 +287,27 @@

dst = d;
    src = s;
-	ok = !verify_range(flash, src, start, page_size, NULL);
+	failed = verify_range(flash, src, start, page_size, NULL);

-	if (!ok && tried++ < MAX_REFLASH_TRIES) {
+	if (failed && tried++ < MAX_REFLASH_TRIES) {
    	fprintf(stderr, "retrying.\n");
    	goto retry;
    }
-	if (!ok) {
+	if (failed) {
    	fprintf(stderr, " page 0x%lx failed!\n",
    		(d - bios) / page_size);
    }
-	return !ok;
+	return failed;
 }

int write_byte_program_jedec(chipaddr bios, uint8_t *src,
    		     chipaddr dst)
 {
-	int tried = 0, ok = 1;
+	int tried = 0, failed = 0;

-	/* If the data is 0xFF, don't program it */
+	/* If the data is 0xFF, don't program it and don't complain. */
    if (*src == 0xFF) {
-		return -1;
+		return 0;
    }

retry:
@@ -325,27 +325,30 @@
    }

if (tried >= MAX_REFLASH_TRIES)
-		ok = 0;
+		failed = 1;

-	return !ok;
+	return failed;
 }

int write_sector_jedec(chipaddr bios, uint8_t *src,
    	       chipaddr dst, unsigned int page_size)
 {
-	int i;
+	int i, failed = 0;

for (i = 0; i < page_size; i++) {
-		write_byte_program_jedec(bios, src, dst);
+		if (write_byte_program_jedec(bios, src, dst))
+			failed = 1;
    	dst++, src++;
    }
+	if (failed)
+		fprintf(stderr, " writing sector at 0x%lx failed!\n", dst);

-	return 0;
+	return failed;
 }

int write_jedec(struct flashchip *flash, uint8_t *buf)
 {
-	int i;
+	int i, failed = 0;
    int total_size = flash->total_size * 1024;
    int page_size = flash->page_size;
    chipaddr bios = flash->virtual_memory;
@@ -358,12 +361,13 @@
    printf("Programming page: ");
    for (i = 0; i < total_size / page_size; i++) {
    	printf("%04d at address: 0x%08x", i, i * page_size);
-		write_page_write_jedec(flash, buf + i * page_size,
-				       i * page_size, page_size);
+		if (write_page_write_jedec(flash, buf + i * page_size,
+					   i * page_size, page_size))
+			failed = 1;
    	printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
    }
    printf("\n");
    protect_jedec(bios);

-	return 0;
+	return failed;
 }