[nrf fromtree] drivers: mspi_dw: Remove needless TXEIR check #3414
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This is a follow-up to commit f0f5f8c. There is no need to check if TXE interrupt flag is set before calling tx_dummy_bytes(), as the function can handle the case when it is called even though there is no room in the TX FIFO. On the other hand, the check may be actually harmful, as it may prevent adding more items to the TX FIFO while the SSI controller is waiting until the FIFO achieves its transfer start level. Remove the check then and exit the ISR loop when no dummy bytes could be written into the TX FIFO. Signed-off-by: Andrzej Głąbek <[email protected]> (cherry picked from commit 7ff2be0)
rlubos
approved these changes
Oct 20, 2025
nordic-piks
approved these changes
Oct 24, 2025
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This is a follow-up to commit f0f5f8c.
There is no need to check if TXE interrupt flag is set before calling tx_dummy_bytes(), as the function can handle the case when it is called even though there is no room in the TX FIFO. On the other hand, the check may be actually harmful, as it may prevent adding more items to the TX FIFO while the SSI controller is waiting until the FIFO achieves its transfer start level. Remove the check then and exit the ISR loop when no dummy bytes could be written into the TX FIFO.
(cherry picked from commit 7ff2be0)