[riot-notifications] [RIOT-OS/RIOT] TCP client cannot send read only data (#16541)

Kaspar Schleiser notifications at github.com
Wed Jun 9 08:44:51 CEST 2021

stm32_eth is using DMA for sending: https://github.com/kaspar030/RIOT/blob/88da1421be9401c6ce0b6152ce502547e8d1efc3/cpu/stm32/periph/eth.c#L468.
The nrf DMA controller can only transfer from/to RAM, maybe stm32 has a similar restriction?

@maribu Maybe you can take a look?

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