mirror/pico-sdk
1
0
Fork 0
mirror of https://github.com/raspberrypi/pico-sdk.git synced 2025-02-05 18:40:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

Freertos background asserts if IPv6 is enabled (#1591)

Browse Source 
If LWIP_IPV6=1 a request to update the multicast list occurs in a
callback in the low priority interrupt.

This makes an ioctl call into the driver, at the end of which is a call
to cyw43_await_background_or_timeout_us (see CYW43_DO_IOCTL_WAIT).
It is attempting to delay until there's "some work to do".

For Freertos this fails an assertion as an attempt is made to acquire a
semaphore in interrupt context.

Fixes #1590
This commit is contained in:
Peter Harper 2023-12-21 13:51:21 +00:00 committed by GitHub
parent 9ff8a98df6
commit 9f45e3c905
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/rp2_common/pico_cyw43_driver/cyw43_driver.c
View File

@ -164,6 +164,10 @@ void cyw43_thread_lock_check(void) {
#endif
void cyw43_await_background_or_timeout_us(uint32_t timeout_us) {
if (__get_current_exception() > 0) {
async_context_wait_until(cyw43_async_context, make_timeout_time_us(timeout_us));
return;
}
async_context_wait_for_work_until(cyw43_async_context, make_timeout_time_us(timeout_us));
}