Messages in this thread Patch in this message | | | From | Ronald Wahl <> | Subject | [PATCH v2] serial: 8250: 8250_omap: Clear UART_HAS_RHR_IT_DIS bit | Date | Tue, 31 Oct 2023 11:20:24 +0100 |
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From: Ronald Wahl <ronald.wahl@raritan.com>
This fixes commit 439c7183e5b9 ("serial: 8250: 8250_omap: Disable RX interrupt after DMA enable") which unfortunately set the UART_HAS_RHR_IT_DIS bit in the UART_OMAP_IER2 register and never cleared it.
Fixes: 439c7183e5b9 ("serial: 8250: 8250_omap: Disable RX interrupt after DMA enable") Signed-off-by: Ronald Wahl <ronald.wahl@raritan.com> --- V2: - add Fixes: tag - fix author
drivers/tty/serial/8250/8250_omap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index ca972fd37725..c7ab2963040b 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -914,7 +914,7 @@ static void __dma_rx_do_complete(struct uart_8250_port *p) if (priv->habit & UART_HAS_RHR_IT_DIS) { reg = serial_in(p, UART_OMAP_IER2); reg &= ~UART_OMAP_IER2_RHR_IT_DIS; - serial_out(p, UART_OMAP_IER2, UART_OMAP_IER2_RHR_IT_DIS); + serial_out(p, UART_OMAP_IER2, reg); }
dmaengine_tx_status(rxchan, cookie, &state); @@ -1060,7 +1060,7 @@ static int omap_8250_rx_dma(struct uart_8250_port *p) if (priv->habit & UART_HAS_RHR_IT_DIS) { reg = serial_in(p, UART_OMAP_IER2); reg |= UART_OMAP_IER2_RHR_IT_DIS; - serial_out(p, UART_OMAP_IER2, UART_OMAP_IER2_RHR_IT_DIS); + serial_out(p, UART_OMAP_IER2, reg); }
dma_async_issue_pending(dma->rxchan); -- 2.41.0
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