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src/flash/nor/virtual: handle null pointers 

Either of protect and protect_check driver callbacks can be NULL. In
virtual_protect, reuse flash_driver_protect which checks for that case
and generates a nice error message and return code. In
virtual_protect_check, there is no corresponding flash_driver_*
function, so add the NULL check directly.

Change-Id: Ia63d85ede640a8382cf5cad0760f5d1ffe4d7cfe
Signed-off-by: Christopher Head <chead@zaber.com>
Reviewed-on: http://openocd.zylin.com/5782
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Christopher Head 2020-07-17 14:44:35 -07:00 committed by Tomas Vanek
parent 37eac2dfbc
commit 6ec2ec4d32
1 changed files with 5 additions and 13 deletions
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18
src/flash/nor/virtual.c
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@ -79,33 +79,25 @@ static int virtual_protect(struct flash_bank *bank, int set, unsigned int first,
unsigned int last)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (master_bank == NULL)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->protect(master_bank, set, first, last);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
return flash_driver_protect(master_bank, set, first, last);
}
static int virtual_protect_check(struct flash_bank *bank)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (master_bank == NULL)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->protect_check(master_bank);
if (retval != ERROR_OK)
return retval;
if (master_bank->driver->protect_check == NULL)
return ERROR_FLASH_OPER_UNSUPPORTED;
return ERROR_OK;
/* call master handler */
return master_bank->driver->protect_check(master_bank);
}
static int virtual_erase(struct flash_bank *bank, unsigned int first,