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tty: serial: stm32-usart: Remove set but unused 'cookie' variables

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Fixes the following W=1 kernel build warning(s):

 drivers/tty/serial/stm32-usart.c: In function ‘stm32_transmit_chars_dma’:
 drivers/tty/serial/stm32-usart.c:353:15: warning: variable ‘cookie’ set but not used [-Wunused-but-set-variable]
 drivers/tty/serial/stm32-usart.c: In function ‘stm32_of_dma_rx_probe’:
 drivers/tty/serial/stm32-usart.c:1090:15: warning: variable ‘cookie’ set but not used [-Wunused-but-set-variable]

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Gerald Baeza <gerald.baeza@st.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201104193549.4026187-29-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lee Jones 2020-11-04 19:35:41 +00:00 • committed by Greg Kroah-Hartman
parent 7285ff0b7d
commit 24832ca3ee
1 changed files with 2 additions and 4 deletions
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6
drivers/tty/serial/stm32-usart.c
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@ -350,7 +350,6 @@ static void stm32_transmit_chars_dma(struct uart_port *port)
struct stm32_usart_offsets *ofs = &stm32port->info->ofs; struct stm32_usart_offsets *ofs = &stm32port->info->ofs;
struct circ_buf *xmit = &port->state->xmit; struct circ_buf *xmit = &port->state->xmit;
struct dma_async_tx_descriptor *desc = NULL; struct dma_async_tx_descriptor *desc = NULL;
dma_cookie_t cookie;
unsigned int count, i; unsigned int count, i;
if (stm32port->tx_dma_busy) if (stm32port->tx_dma_busy)
@ -394,7 +393,7 @@ static void stm32_transmit_chars_dma(struct uart_port *port)
desc->callback_param = port; desc->callback_param = port;
/* Push current DMA TX transaction in the pending queue */ /* Push current DMA TX transaction in the pending queue */
cookie = dmaengine_submit(desc); dmaengine_submit(desc);
/* Issue pending DMA TX requests */ /* Issue pending DMA TX requests */
dma_async_issue_pending(stm32port->tx_ch); dma_async_issue_pending(stm32port->tx_ch);
@ -1087,7 +1086,6 @@ static int stm32_of_dma_rx_probe(struct stm32_port *stm32port,
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
struct dma_slave_config config; struct dma_slave_config config;
struct dma_async_tx_descriptor *desc = NULL; struct dma_async_tx_descriptor *desc = NULL;
dma_cookie_t cookie;
int ret; int ret;
/* Request DMA RX channel */ /* Request DMA RX channel */
@ -1132,7 +1130,7 @@ static int stm32_of_dma_rx_probe(struct stm32_port *stm32port,
desc->callback_param = NULL; desc->callback_param = NULL;
/* Push current DMA transaction in the pending queue */ /* Push current DMA transaction in the pending queue */
cookie = dmaengine_submit(desc); dmaengine_submit(desc);
/* Issue pending DMA requests */ /* Issue pending DMA requests */
dma_async_issue_pending(stm32port->rx_ch); dma_async_issue_pending(stm32port->rx_ch);