netdev - [PATCH 2/2] nfc: pn533: Constify pn533_phy

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Date:   Thu,  7 Oct 2021 00:47:38 +0200
From:   Rikard Falkeborn <rikard.falkeborn@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nfc@...ts.01.org,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: [PATCH 2/2] nfc: pn533: Constify pn533_phy_ops

Neither the driver or the core modifies the pn533_phy_ops struct, so
make them const to allow the compiler to put the static structs in
read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
---
 drivers/nfc/pn533/i2c.c   | 2 +-
 drivers/nfc/pn533/pn533.c | 2 +-
 drivers/nfc/pn533/pn533.h | 4 ++--
 drivers/nfc/pn533/uart.c  | 2 +-
 drivers/nfc/pn533/usb.c   | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/nfc/pn533/i2c.c b/drivers/nfc/pn533/i2c.c
index f5610b6b9894..673eb5e9b887 100644
--- a/drivers/nfc/pn533/i2c.c
+++ b/drivers/nfc/pn533/i2c.c
@@ -156,7 +156,7 @@ static irqreturn_t pn533_i2c_irq_thread_fn(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static struct pn533_phy_ops i2c_phy_ops = {
+static const struct pn533_phy_ops i2c_phy_ops = {
 	.send_frame = pn533_i2c_send_frame,
 	.send_ack = pn533_i2c_send_ack,
 	.abort_cmd = pn533_i2c_abort_cmd,
diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c
index da180335422c..787bcbd290f7 100644
--- a/drivers/nfc/pn533/pn533.c
+++ b/drivers/nfc/pn533/pn533.c
@@ -2733,7 +2733,7 @@ EXPORT_SYMBOL_GPL(pn533_finalize_setup);
 struct pn533 *pn53x_common_init(u32 device_type,
 				enum pn533_protocol_type protocol_type,
 				void *phy,
-				struct pn533_phy_ops *phy_ops,
+				const struct pn533_phy_ops *phy_ops,
 				struct pn533_frame_ops *fops,
 				struct device *dev)
 {
diff --git a/drivers/nfc/pn533/pn533.h b/drivers/nfc/pn533/pn533.h
index 5f94f38a2a08..09e35b8693f5 100644
--- a/drivers/nfc/pn533/pn533.h
+++ b/drivers/nfc/pn533/pn533.h
@@ -177,7 +177,7 @@ struct pn533 {
 
 	struct device *dev;
 	void *phy;
-	struct pn533_phy_ops *phy_ops;
+	const struct pn533_phy_ops *phy_ops;
 };
 
 typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg,
@@ -232,7 +232,7 @@ struct pn533_phy_ops {
 struct pn533 *pn53x_common_init(u32 device_type,
 				enum pn533_protocol_type protocol_type,
 				void *phy,
-				struct pn533_phy_ops *phy_ops,
+				const struct pn533_phy_ops *phy_ops,
 				struct pn533_frame_ops *fops,
 				struct device *dev);
 
diff --git a/drivers/nfc/pn533/uart.c b/drivers/nfc/pn533/uart.c
index 77bb073f031a..2caf997f9bc9 100644
--- a/drivers/nfc/pn533/uart.c
+++ b/drivers/nfc/pn533/uart.c
@@ -123,7 +123,7 @@ static int pn532_dev_down(struct pn533 *dev)
 	return 0;
 }
 
-static struct pn533_phy_ops uart_phy_ops = {
+static const struct pn533_phy_ops uart_phy_ops = {
 	.send_frame = pn532_uart_send_frame,
 	.send_ack = pn532_uart_send_ack,
 	.abort_cmd = pn532_uart_abort_cmd,
diff --git a/drivers/nfc/pn533/usb.c b/drivers/nfc/pn533/usb.c
index bd7f7478d189..6f71ac72012e 100644
--- a/drivers/nfc/pn533/usb.c
+++ b/drivers/nfc/pn533/usb.c
@@ -429,7 +429,7 @@ static void pn533_send_complete(struct urb *urb)
 	}
 }
 
-static struct pn533_phy_ops usb_phy_ops = {
+static const struct pn533_phy_ops usb_phy_ops = {
 	.send_frame = pn533_usb_send_frame,
 	.send_ack = pn533_usb_send_ack,
 	.abort_cmd = pn533_usb_abort_cmd,
-- 
2.33.0