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at91sam7: ensure probed flash bank has a name (fix a segfault) 

Before this commit, openocd used to segfault when probing flash
of an at91sam7x512 (which contains 2 banks of flash). This was due
to the way it systematically insert a new flash bank without setting
its name.
Then, when get_flash_bank_by_name_noprobe() is called, it is doing
a strcmp() on the non-initialized bank->name.

This commit prevents allocation of second probed bank if it is already
allocated (for example, if it is set in a target config file). If a
new bank really needs to be allocated, it ensures that a default name
is set.

Change-Id: I38d15bef1fda2ec746efad37171975136cf7b371
Signed-off-by: Aurelien Jacobs <aurel@gnuage.org>
Reviewed-on: http://openocd.zylin.com/171
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
__archive__
Aurelien Jacobs 2011-10-17 14:49:18 +02:00 committed by Spencer Oliver
parent a943ec1ca9
commit 67c3ad8c40
1 changed files with 24 additions and 18 deletions
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42
src/flash/nor/at91sam7.c
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@ -622,16 +622,19 @@ static int at91sam7_read_part_info(struct flash_bank *bank)
{
if (bnk > 0)
{
/* create a new flash bank element */
struct flash_bank *fb = malloc(sizeof(struct flash_bank));
fb->target = target;
fb->driver = bank->driver;
fb->driver_priv = malloc(sizeof(struct at91sam7_flash_bank));
fb->next = NULL;
if (!t_bank->next) {
/* create a new flash bank element */
struct flash_bank *fb = malloc(sizeof(struct flash_bank));
fb->target = target;
fb->driver = bank->driver;
fb->driver_priv = malloc(sizeof(struct at91sam7_flash_bank));
fb->name = "sam7_probed";
fb->next = NULL;
/* link created bank in 'flash_banks' list and redirect t_bank */
t_bank->next = fb;
t_bank = fb;
/* link created bank in 'flash_banks' list */
t_bank->next = fb;
}
t_bank = t_bank->next;
}
t_bank->bank_number = bnk;
@ -875,16 +878,19 @@ FLASH_BANK_COMMAND_HANDLER(at91sam7_flash_bank_command)
{
if (bnk > 0)
{
/* create a new bank element */
struct flash_bank *fb = malloc(sizeof(struct flash_bank));
fb->target = target;
fb->driver = bank->driver;
fb->driver_priv = malloc(sizeof(struct at91sam7_flash_bank));
fb->next = NULL;
if (!t_bank->next) {
/* create a new bank element */
struct flash_bank *fb = malloc(sizeof(struct flash_bank));
fb->target = target;
fb->driver = bank->driver;
fb->driver_priv = malloc(sizeof(struct at91sam7_flash_bank));
fb->name = "sam7_probed";
fb->next = NULL;
/* link created bank in 'flash_banks' list and redirect t_bank */
t_bank->next = fb;
t_bank = fb;
/* link created bank in 'flash_banks' list */
t_bank->next = fb;
}
t_bank = t_bank->next;
}
t_bank->bank_number = bnk;