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Make the sys_arch_protect() mutex be recursive. 

Fixes #9744

Appears to be a lwIP porting bug. Comments in our porting layer say:

    This function should support recursive calls from the same task or interrupt. In other words, sys_arch_protect() could be called while already protected.
pull/10861/head
Paul Thompson 2019-06-18 14:53:02 -07:00
parent 14b77c9a2e
commit 91402f4d77
1 changed files with 1 additions and 0 deletions
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features/lwipstack/lwip-sys/arch/lwip_sys_arch.c
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@ -432,6 +432,7 @@ void sys_init(void) {
lwip_sys_mutex_attr.name = "lwip_sys_mutex";
lwip_sys_mutex_attr.cb_mem = &lwip_sys_mutex_data;
lwip_sys_mutex_attr.cb_size = sizeof(lwip_sys_mutex_data);
lwip_sys_mutex_attr.attr_bits = osMutexPrioInherit | osMutexRecursive;
lwip_sys_mutex = osMutexNew(&lwip_sys_mutex_attr);
if (lwip_sys_mutex == NULL)
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_NETWORK_STACK, MBED_ERROR_CODE_INITIALIZATION_FAILED), "sys_init error, mutex initialization failed\n");