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drivers/tty/serial/stm32-usart.c: In function ‘stm32_receive_chars’:
drivers/tty/serial/stm32-usart.c:130: warning: comparison is always true due to limited range of data type
drivers/tty/serial/stm32-usart.c: In function ‘stm32_tx_dma_complete’:
drivers/tty/serial/stm32-usart.c:177: warning: comparison is always false due to limited range of data type
stm32_usart_offsets.icr is u8, while UNDEF_REG = ~0 is int, and thus
0xffffffff.
As all registers in stm32_usart_offsets are u8, change the definition of
UNDEF_REG to 0xff to fix this.
Fixes: ada8618ff3bfe183 ("serial: stm32: adding support for stm32f7")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds dma mode support for rx and tx
with pio mode as fallback in case of dma error.
Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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