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From:   Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
        Charles Gorand <charles.gorand@effinnov.com>,
        Krzysztof Opasiak <k.opasiak@samsung.com>,
        Mark Greer <mgreer@animalcreek.com>,
        Bongsu Jeon <bongsu.jeon@samsung.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        linux-wireless@vger.kernel.org
Subject: [PATCH 09/12] nfc: constify nfc_ops
Date:   Sat, 24 Jul 2021 23:49:25 +0200
Message-Id: <20210724214928.122096-4-krzysztof.kozlowski@canonical.com>
In-Reply-To: <20210724214743.121884-1-krzysztof.kozlowski@canonical.com>
References: <20210724214743.121884-1-krzysztof.kozlowski@canonical.com>
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Neither the core nor the drivers modify the passed pointer to struct
nfc_ops, so make it a pointer to const for correctness and safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 drivers/nfc/pn533/pn533.c | 2 +-
 include/net/nfc/nfc.h     | 4 ++--
 net/nfc/core.c            | 2 +-
 net/nfc/digital_core.c    | 2 +-
 net/nfc/hci/core.c        | 2 +-
 net/nfc/nci/core.c        | 2 +-
 6 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c
index cd64bfe20402..2f3f3fe9a0ba 100644
--- a/drivers/nfc/pn533/pn533.c
+++ b/drivers/nfc/pn533/pn533.c
@@ -2623,7 +2623,7 @@ static int pn533_dev_down(struct nfc_dev *nfc_dev)
 	return ret;
 }
 
-static struct nfc_ops pn533_nfc_ops = {
+static const struct nfc_ops pn533_nfc_ops = {
 	.dev_up = pn533_dev_up,
 	.dev_down = pn533_dev_down,
 	.dep_link_up = pn533_dep_link_up,
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index 31672021d071..85b698794b14 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -191,14 +191,14 @@ struct nfc_dev {
 	const struct nfc_vendor_cmd *vendor_cmds;
 	int n_vendor_cmds;
 
-	struct nfc_ops *ops;
+	const struct nfc_ops *ops;
 	struct genl_info *cur_cmd_info;
 };
 #define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
 
 extern struct class nfc_class;
 
-struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
+struct nfc_dev *nfc_allocate_device(const struct nfc_ops *ops,
 				    u32 supported_protocols,
 				    int tx_headroom,
 				    int tx_tailroom);
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 573c80c6ff7a..6ade54149b73 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -1048,7 +1048,7 @@ struct nfc_dev *nfc_get_device(unsigned int idx)
  * @tx_headroom: reserved space at beginning of skb
  * @tx_tailroom: reserved space at end of skb
  */
-struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
+struct nfc_dev *nfc_allocate_device(const struct nfc_ops *ops,
 				    u32 supported_protocols,
 				    int tx_headroom, int tx_tailroom)
 {
diff --git a/net/nfc/digital_core.c b/net/nfc/digital_core.c
index 5044c7db577e..8f2572decccd 100644
--- a/net/nfc/digital_core.c
+++ b/net/nfc/digital_core.c
@@ -732,7 +732,7 @@ static int digital_in_send(struct nfc_dev *nfc_dev, struct nfc_target *target,
 	return rc;
 }
 
-static struct nfc_ops digital_nfc_ops = {
+static const struct nfc_ops digital_nfc_ops = {
 	.dev_up = digital_dev_up,
 	.dev_down = digital_dev_down,
 	.start_poll = digital_start_poll,
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index e37d30302b06..b33fe4ee1581 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -928,7 +928,7 @@ static int hci_fw_download(struct nfc_dev *nfc_dev, const char *firmware_name)
 	return hdev->ops->fw_download(hdev, firmware_name);
 }
 
-static struct nfc_ops hci_nfc_ops = {
+static const struct nfc_ops hci_nfc_ops = {
 	.dev_up = hci_dev_up,
 	.dev_down = hci_dev_down,
 	.start_poll = hci_start_poll,
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 50c625940fa3..400d66c4e210 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -1102,7 +1102,7 @@ static int nci_fw_download(struct nfc_dev *nfc_dev, const char *firmware_name)
 	return ndev->ops->fw_download(ndev, firmware_name);
 }
 
-static struct nfc_ops nci_nfc_ops = {
+static const struct nfc_ops nci_nfc_ops = {
 	.dev_up = nci_dev_up,
 	.dev_down = nci_dev_down,
 	.start_poll = nci_start_poll,
-- 
2.27.0