netdev - [PATCH net-next 17/36] can: mcp251xfd: mcp251xfd_chip_sleep(): introduce function to bring chip into sleep mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 23 Feb 2022 23:43:13 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 17/36] can: mcp251xfd: mcp251xfd_chip_sleep(): introduce function to bring chip into sleep mode

This patch adds a new function to bring the chip into sleep mode, and
replaces several occurrences of open coded variants.

Link: https://lore.kernel.org/all/20220207131047.282110-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 .../net/can/spi/mcp251xfd/mcp251xfd-core.c    | 21 ++++++++++++-------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
index 49ce5ff34903..5794400c42b1 100644
--- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
+++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
@@ -289,6 +289,11 @@ static int mcp251xfd_chip_clock_enable(const struct mcp251xfd_priv *priv)
 	return err;
 }
 
+static inline int mcp251xfd_chip_sleep(const struct mcp251xfd_priv *priv)
+{
+	return mcp251xfd_chip_set_mode(priv, MCP251XFD_REG_CON_MODE_SLEEP);
+}
+
 static int mcp251xfd_chip_softreset_do(const struct mcp251xfd_priv *priv)
 {
 	const __be16 cmd = mcp251xfd_cmd_reset();
@@ -635,7 +640,7 @@ static int mcp251xfd_chip_stop(struct mcp251xfd_priv *priv,
 
 	mcp251xfd_chip_interrupts_disable(priv);
 	mcp251xfd_chip_rx_int_disable(priv);
-	return mcp251xfd_chip_set_mode(priv, MCP251XFD_REG_CON_MODE_SLEEP);
+	mcp251xfd_chip_sleep(priv);
 }
 
 static int mcp251xfd_chip_start(struct mcp251xfd_priv *priv)
@@ -1719,19 +1724,19 @@ static int mcp251xfd_register(struct mcp251xfd_priv *priv)
 	if (err == -ENODEV)
 		goto out_runtime_disable;
 	if (err)
-		goto out_chip_set_mode_sleep;
+		goto out_chip_sleep;
 
 	err = mcp251xfd_register_chip_detect(priv);
 	if (err)
-		goto out_chip_set_mode_sleep;
+		goto out_chip_sleep;
 
 	err = mcp251xfd_register_check_rx_int(priv);
 	if (err)
-		goto out_chip_set_mode_sleep;
+		goto out_chip_sleep;
 
 	err = register_candev(ndev);
 	if (err)
-		goto out_chip_set_mode_sleep;
+		goto out_chip_sleep;
 
 	err = mcp251xfd_register_done(priv);
 	if (err)
@@ -1741,7 +1746,7 @@ static int mcp251xfd_register(struct mcp251xfd_priv *priv)
 	 * disable the clocks and vdd. If CONFIG_PM is not enabled,
 	 * the clocks and vdd will stay powered.
 	 */
-	err = mcp251xfd_chip_set_mode(priv, MCP251XFD_REG_CON_MODE_SLEEP);
+	err = mcp251xfd_chip_sleep(priv);
 	if (err)
 		goto out_unregister_candev;
 
@@ -1751,8 +1756,8 @@ static int mcp251xfd_register(struct mcp251xfd_priv *priv)
 
  out_unregister_candev:
 	unregister_candev(ndev);
- out_chip_set_mode_sleep:
-	mcp251xfd_chip_set_mode(priv, MCP251XFD_REG_CON_MODE_SLEEP);
+ out_chip_sleep:
+	mcp251xfd_chip_sleep(priv);
  out_runtime_disable:
 	pm_runtime_disable(ndev->dev.parent);
  out_runtime_put_noidle:
-- 
2.34.1