[flashrom] [PATCH] fix chip size limiting in atapromise
Carl-Daniel Hailfinger
c-d.hailfinger.devel.2006 at gmx.net
Sun Jan 17 01:57:25 CET 2016
Atapromise chip size limiting has two bugs I didn't catch during review,
but only in the moment of commit.
The current code is checking model_id to remember if a chip has already
been limited, but if flashchips.c contains two subsequent chips with
different vendor_id but identical model_id the adjustment will not be
done. Switch to checking the chip size instead.
If a chip has multiple whole-chip erase functions, only one will be
modified. Fix that.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>
Index: flashrom-atapromise_fix_limit_chip/atapromise.c
===================================================================
--- flashrom-atapromise_fix_limit_chip/atapromise.c (Revision 1916)
+++ flashrom-atapromise_fix_limit_chip/atapromise.c (Arbeitskopie)
@@ -79,38 +79,35 @@
static void atapromise_limit_chip(struct flashchip *chip)
{
- static uint32_t last_model_id = 0;
unsigned int i, size;
+ unsigned int usable_erasers = 0;
- if (chip->model_id == last_model_id)
- return;
-
size = chip->total_size * 1024;
- if (size > rom_size) {
- /* Undefine all block_erasers that don't operate on the whole chip,
- * and adjust the eraseblock size of the one that does.
- */
- for (i = 0; i < NUM_ERASEFUNCTIONS; ++i) {
- if (chip->block_erasers[i].eraseblocks[0].size != size) {
- chip->block_erasers[i].eraseblocks[0].count = 0;
- chip->block_erasers[i].block_erase = NULL;
- } else {
- chip->block_erasers[i].eraseblocks[0].size = rom_size;
- break;
- }
- }
- if (i != NUM_ERASEFUNCTIONS) {
- chip->total_size = rom_size / 1024;
- if (chip->page_size > rom_size)
- chip->page_size = rom_size;
+ /* Chip is small enough or already limited. */
+ if (size <= rom_size)
+ return;
+
+ /* Undefine all block_erasers that don't operate on the whole chip,
+ * and adjust the eraseblock size of those which do.
+ */
+ for (i = 0; i < NUM_ERASEFUNCTIONS; ++i) {
+ if (chip->block_erasers[i].eraseblocks[0].size != size) {
+ chip->block_erasers[i].eraseblocks[0].count = 0;
+ chip->block_erasers[i].block_erase = NULL;
} else {
- msg_pdbg("Failed to adjust size of chip \"%s\" (%d kB).\n", chip->name,
- chip->total_size);
+ chip->block_erasers[i].eraseblocks[0].size = rom_size;
+ usable_erasers++;
}
}
- last_model_id = chip->model_id;
+ if (usable_erasers) {
+ chip->total_size = rom_size / 1024;
+ if (chip->page_size > rom_size)
+ chip->page_size = rom_size;
+ } else {
+ msg_pdbg("Failed to adjust size of chip \"%s\" (%d kB).\n", chip->name, chip->total_size);
+ }
}
int atapromise_init(void)
More information about the flashrom
mailing list