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applications: serial_lte_modem: check for uninitialized send callback #15546

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May 31, 2024
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applications: serial_lte_modem: check for uninitialized send callback #15546

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3 changes: 3 additions & 0 deletions applications/serial_lte_modem/src/slm_at_host.c
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Original file line number Diff line number Diff line change
Expand Up @@ -484,6 +484,9 @@ static int slm_at_send_indicate(const uint8_t *data, size_t len,
if (k_is_in_isr()) {
LOG_ERR("FIXME: Attempt to send AT response (of size %u) in ISR.", len);
return -EINTR;
} else if (at_backend.send == NULL) {
LOG_ERR("Attempt to send via an uninitialized AT backend");
return -EFAULT;
}

if (indicate) {
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