linux-kernel - [PATCH 5.10 065/157] tty: serial: stm32-usart: Remove set but unused cookie variables

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Message-Id: <20210322121935.827607612@linuxfoundation.org>
Date:   Mon, 22 Mar 2021 13:27:02 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jiri Slaby <jirislaby@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Gerald Baeza <gerald.baeza@...com>,
        linux-serial@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        Lee Jones <lee.jones@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 065/157] tty: serial: stm32-usart: Remove set but unused cookie variables

From: Lee Jones <lee.jones@...aro.org>

[ Upstream commit 24832ca3ee85a14c42a4f23a5c8841ef5db3d029 ]

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@...uxfoundation.org>
Cc: Jiri Slaby <jirislaby@...nel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...com>
Cc: Gerald Baeza <gerald.baeza@...com>
Cc: linux-serial@...r.kernel.org
Cc: linux-stm32@...md-mailman.stormreply.com
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Link: https://lore.kernel.org/r/20201104193549.4026187-29-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/tty/serial/stm32-usart.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index ee6c7762d355..f4de32d3f2af 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -350,7 +350,6 @@ static void stm32_transmit_chars_dma(struct uart_port *port)
 	struct stm32_usart_offsets *ofs = &stm32port->info->ofs;
 	struct circ_buf *xmit = &port->state->xmit;
 	struct dma_async_tx_descriptor *desc = NULL;
-	dma_cookie_t cookie;
 	unsigned int count, i;
 
 	if (stm32port->tx_dma_busy)
@@ -394,7 +393,7 @@ static void stm32_transmit_chars_dma(struct uart_port *port)
 	desc->callback_param = port;
 
 	/* Push current DMA TX transaction in the pending queue */
-	cookie = dmaengine_submit(desc);
+	dmaengine_submit(desc);
 
 	/* Issue pending DMA TX requests */
 	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 dma_slave_config config;
 	struct dma_async_tx_descriptor *desc = NULL;
-	dma_cookie_t cookie;
 	int ret;
 
 	/* Request DMA RX channel */
@@ -1132,7 +1130,7 @@ static int stm32_of_dma_rx_probe(struct stm32_port *stm32port,
 	desc->callback_param = NULL;
 
 	/* Push current DMA transaction in the pending queue */
-	cookie = dmaengine_submit(desc);
+	dmaengine_submit(desc);
 
 	/* Issue pending DMA requests */
 	dma_async_issue_pending(stm32port->rx_ch);
-- 
2.30.1