Merge branch 'nfc-const'

Krzysztof Kozlowski says: ==================== nfc: constify data structures Constify pointers to several data structures which are not modified by NFC core or by drivers to make it slightly safer. No functional impact expected. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Jul 25, 2021 · 0e80432 · 0e80432
2 parents c538115 + 7186aac
commit 0e80432
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Showing 46 changed files with 108 additions and 112 deletions.
diff --git a/Documentation/driver-api/nfc/nfc-hci.rst b/Documentation/driver-api/nfc/nfc-hci.rst
@@ -181,7 +181,7 @@ xmit_from_hci():
 The llc must be registered with nfc before it can be used. Do that by
 calling::
 
-	nfc_llc_register(const char *name, struct nfc_llc_ops *ops);
+	nfc_llc_register(const char *name, const struct nfc_llc_ops *ops);
 
 Again, note that the llc does not handle the physical link. It is thus very
 easy to mix any physical link with any llc for a given chip driver.

diff --git a/drivers/nfc/fdp/fdp.c b/drivers/nfc/fdp/fdp.c
@@ -38,7 +38,7 @@
 #define NCI_OP_PROP_SET_PDATA_OID		0x23
 
 struct fdp_nci_info {
-	struct nfc_phy_ops *phy_ops;
+	const struct nfc_phy_ops *phy_ops;
 	struct fdp_i2c_phy *phy;
 	struct nci_dev *ndev;
 
@@ -651,7 +651,7 @@ static int fdp_nci_core_get_config_rsp_packet(struct nci_dev *ndev,
 	return 0;
 }
 
-static struct nci_driver_ops fdp_core_ops[] = {
+static const struct nci_driver_ops fdp_core_ops[] = {
 	{
 		.opcode = NCI_OP_CORE_GET_CONFIG_RSP,
 		.rsp = fdp_nci_core_get_config_rsp_packet,
@@ -662,7 +662,7 @@ static struct nci_driver_ops fdp_core_ops[] = {
 	},
 };
 
-static struct nci_driver_ops fdp_prop_ops[] = {
+static const struct nci_driver_ops fdp_prop_ops[] = {
 	{
 		.opcode = nci_opcode_pack(NCI_GID_PROP, NCI_OP_PROP_PATCH_OID),
 		.rsp = fdp_nci_prop_patch_rsp_packet,
@@ -675,7 +675,7 @@ static struct nci_driver_ops fdp_prop_ops[] = {
 	},
 };
 
-static struct nci_ops nci_ops = {
+static const struct nci_ops nci_ops = {
 	.open = fdp_nci_open,
 	.close = fdp_nci_close,
 	.send = fdp_nci_send,
@@ -687,7 +687,7 @@ static struct nci_ops nci_ops = {
 	.n_core_ops = ARRAY_SIZE(fdp_core_ops),
 };
 
-int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops,
+int fdp_nci_probe(struct fdp_i2c_phy *phy, const struct nfc_phy_ops *phy_ops,
 			struct nci_dev **ndevp, int tx_headroom,
 			int tx_tailroom, u8 clock_type, u32 clock_freq,
 			u8 *fw_vsc_cfg)
@@ -718,6 +718,7 @@ int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops,
 		    NFC_PROTO_NFC_DEP_MASK |
 		    NFC_PROTO_ISO15693_MASK;
 
+	BUILD_BUG_ON(ARRAY_SIZE(fdp_prop_ops) > NCI_MAX_PROPRIETARY_CMD);
 	ndev = nci_allocate_device(&nci_ops, protocols, tx_headroom,
 				   tx_tailroom);
 	if (!ndev) {

diff --git a/drivers/nfc/fdp/fdp.h b/drivers/nfc/fdp/fdp.h
@@ -21,7 +21,7 @@ struct fdp_i2c_phy {
 	uint16_t next_read_size;
 };
 
-int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops,
+int fdp_nci_probe(struct fdp_i2c_phy *phy, const struct nfc_phy_ops *phy_ops,
 		  struct nci_dev **ndev, int tx_headroom, int tx_tailroom,
 		  u8 clock_type, u32 clock_freq, u8 *fw_vsc_cfg);
 void fdp_nci_remove(struct nci_dev *ndev);

diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c
@@ -120,7 +120,7 @@ static int fdp_nci_i2c_write(void *phy_id, struct sk_buff *skb)
 	return r;
 }
 
-static struct nfc_phy_ops i2c_phy_ops = {
+static const struct nfc_phy_ops i2c_phy_ops = {
 	.write = fdp_nci_i2c_write,
 	.enable = fdp_nci_i2c_enable,
 	.disable = fdp_nci_i2c_disable,

diff --git a/drivers/nfc/mei_phy.c b/drivers/nfc/mei_phy.c
@@ -362,7 +362,7 @@ static void nfc_mei_phy_disable(void *phy_id)
 	phy->powered = 0;
 }
 
-struct nfc_phy_ops mei_phy_ops = {
+const struct nfc_phy_ops mei_phy_ops = {
 	.write = nfc_mei_phy_write,
 	.enable = nfc_mei_phy_enable,
 	.disable = nfc_mei_phy_disable,

diff --git a/drivers/nfc/mei_phy.h b/drivers/nfc/mei_phy.h
@@ -45,7 +45,7 @@ struct nfc_mei_phy {
 	int hard_fault;
 };
 
-extern struct nfc_phy_ops mei_phy_ops;
+extern const struct nfc_phy_ops mei_phy_ops;
 
 struct nfc_mei_phy *nfc_mei_phy_alloc(struct mei_cl_device *device);
 void nfc_mei_phy_free(struct nfc_mei_phy *phy);

diff --git a/drivers/nfc/microread/i2c.c b/drivers/nfc/microread/i2c.c
@@ -225,7 +225,7 @@ static irqreturn_t microread_i2c_irq_thread_fn(int irq, void *phy_id)
 	return IRQ_HANDLED;
 }
 
-static struct nfc_phy_ops i2c_phy_ops = {
+static const struct nfc_phy_ops i2c_phy_ops = {
 	.write = microread_i2c_write,
 	.enable = microread_i2c_enable,
 	.disable = microread_i2c_disable,

diff --git a/drivers/nfc/microread/microread.c b/drivers/nfc/microread/microread.c
@@ -131,7 +131,7 @@
 #define MICROREAD_ELT_ID_SE2 0x04
 #define MICROREAD_ELT_ID_SE3 0x05
 
-static struct nfc_hci_gate microread_gates[] = {
+static const struct nfc_hci_gate microread_gates[] = {
 	{MICROREAD_GATE_ID_ADM, MICROREAD_PIPE_ID_ADMIN},
 	{MICROREAD_GATE_ID_LOOPBACK, MICROREAD_PIPE_ID_HDS_LOOPBACK},
 	{MICROREAD_GATE_ID_IDT, MICROREAD_PIPE_ID_HDS_IDT},
@@ -152,7 +152,7 @@ static struct nfc_hci_gate microread_gates[] = {
 #define MICROREAD_CMD_TAILROOM	2
 
 struct microread_info {
-	struct nfc_phy_ops *phy_ops;
+	const struct nfc_phy_ops *phy_ops;
 	void *phy_id;
 
 	struct nfc_hci_dev *hdev;
@@ -625,7 +625,7 @@ static int microread_event_received(struct nfc_hci_dev *hdev, u8 pipe,
 	return r;
 }
 
-static struct nfc_hci_ops microread_hci_ops = {
+static const struct nfc_hci_ops microread_hci_ops = {
 	.open = microread_open,
 	.close = microread_close,
 	.hci_ready = microread_hci_ready,
@@ -641,9 +641,9 @@ static struct nfc_hci_ops microread_hci_ops = {
 	.event_received = microread_event_received,
 };
 
-int microread_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
-		    int phy_headroom, int phy_tailroom, int phy_payload,
-		    struct nfc_hci_dev **hdev)
+int microread_probe(void *phy_id, const struct nfc_phy_ops *phy_ops,
+		    char *llc_name, int phy_headroom, int phy_tailroom,
+		    int phy_payload, struct nfc_hci_dev **hdev)
 {
 	struct microread_info *info;
 	unsigned long quirks = 0;

diff --git a/drivers/nfc/microread/microread.h b/drivers/nfc/microread/microread.h
@@ -10,9 +10,9 @@
 
 #define DRIVER_DESC "NFC driver for microread"
 
-int microread_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
-		    int phy_headroom, int phy_tailroom, int phy_payload,
-		    struct nfc_hci_dev **hdev);
+int microread_probe(void *phy_id, const struct nfc_phy_ops *phy_ops,
+		    char *llc_name, int phy_headroom, int phy_tailroom,
+		    int phy_payload, struct nfc_hci_dev **hdev);
 
 void microread_remove(struct nfc_hci_dev *hdev);
 

diff --git a/drivers/nfc/nfcmrvl/main.c b/drivers/nfc/nfcmrvl/main.c
@@ -81,7 +81,7 @@ static int nfcmrvl_nci_fw_download(struct nci_dev *ndev,
 	return nfcmrvl_fw_dnld_start(ndev, firmware_name);
 }
 
-static struct nci_ops nfcmrvl_nci_ops = {
+static const struct nci_ops nfcmrvl_nci_ops = {
 	.open = nfcmrvl_nci_open,
 	.close = nfcmrvl_nci_close,
 	.send = nfcmrvl_nci_send,

diff --git a/drivers/nfc/nfcsim.c b/drivers/nfc/nfcsim.c
@@ -320,7 +320,7 @@ static int nfcsim_tg_listen(struct nfc_digital_dev *ddev, u16 timeout,
 	return nfcsim_send(ddev, NULL, timeout, cb, arg);
 }
 
-static struct nfc_digital_ops nfcsim_digital_ops = {
+static const struct nfc_digital_ops nfcsim_digital_ops = {
 	.in_configure_hw = nfcsim_in_configure_hw,
 	.in_send_cmd = nfcsim_in_send_cmd,
 

diff --git a/drivers/nfc/nxp-nci/core.c b/drivers/nfc/nxp-nci/core.c
@@ -83,7 +83,7 @@ static int nxp_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
 	return r;
 }
 
-static struct nci_ops nxp_nci_ops = {
+static const struct nci_ops nxp_nci_ops = {
 	.open = nxp_nci_open,
 	.close = nxp_nci_close,
 	.send = nxp_nci_send,

diff --git 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/drivers/nfc/pn544/i2c.c b/drivers/nfc/pn544/i2c.c
@@ -515,7 +515,7 @@ static irqreturn_t pn544_hci_i2c_irq_thread_fn(int irq, void *phy_id)
 	return IRQ_HANDLED;
 }
 
-static struct nfc_phy_ops i2c_phy_ops = {
+static const struct nfc_phy_ops i2c_phy_ops = {
 	.write = pn544_hci_i2c_write,
 	.enable = pn544_hci_i2c_enable,
 	.disable = pn544_hci_i2c_disable,

diff --git a/drivers/nfc/pn544/pn544.c b/drivers/nfc/pn544/pn544.c
@@ -86,7 +86,7 @@ enum pn544_state {
 #define PN544_HCI_CMD_ATTREQUEST		0x12
 #define PN544_HCI_CMD_CONTINUE_ACTIVATION	0x13
 
-static struct nfc_hci_gate pn544_gates[] = {
+static const struct nfc_hci_gate pn544_gates[] = {
 	{NFC_HCI_ADMIN_GATE, NFC_HCI_INVALID_PIPE},
 	{NFC_HCI_LOOPBACK_GATE, NFC_HCI_INVALID_PIPE},
 	{NFC_HCI_ID_MGMT_GATE, NFC_HCI_INVALID_PIPE},
@@ -108,7 +108,7 @@ static struct nfc_hci_gate pn544_gates[] = {
 #define PN544_CMDS_HEADROOM	2
 
 struct pn544_hci_info {
-	struct nfc_phy_ops *phy_ops;
+	const struct nfc_phy_ops *phy_ops;
 	void *phy_id;
 
 	struct nfc_hci_dev *hdev;
@@ -881,7 +881,7 @@ static int pn544_hci_disable_se(struct nfc_hci_dev *hdev, u32 se_idx)
 	}
 }
 
-static struct nfc_hci_ops pn544_hci_ops = {
+static const struct nfc_hci_ops pn544_hci_ops = {
 	.open = pn544_hci_open,
 	.close = pn544_hci_close,
 	.hci_ready = pn544_hci_ready,
@@ -901,9 +901,10 @@ static struct nfc_hci_ops pn544_hci_ops = {
 	.disable_se = pn544_hci_disable_se,
 };
 
-int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
-		    int phy_headroom, int phy_tailroom, int phy_payload,
-		    fw_download_t fw_download, struct nfc_hci_dev **hdev)
+int pn544_hci_probe(void *phy_id, const struct nfc_phy_ops *phy_ops,
+		    char *llc_name, int phy_headroom, int phy_tailroom,
+		    int phy_payload, fw_download_t fw_download,
+		    struct nfc_hci_dev **hdev)
 {
 	struct pn544_hci_info *info;
 	u32 protocols;

diff --git a/drivers/nfc/pn544/pn544.h b/drivers/nfc/pn544/pn544.h
@@ -16,9 +16,10 @@
 typedef int (*fw_download_t)(void *context, const char *firmware_name,
 				u8 hw_variant);
 
-int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name,
-		    int phy_headroom, int phy_tailroom, int phy_payload,
-		    fw_download_t fw_download, struct nfc_hci_dev **hdev);
+int pn544_hci_probe(void *phy_id, const struct nfc_phy_ops *phy_ops,
+		    char *llc_name, int phy_headroom, int phy_tailroom,
+		    int phy_payload, fw_download_t fw_download,
+		    struct nfc_hci_dev **hdev);
 void pn544_hci_remove(struct nfc_hci_dev *hdev);
 
 #endif /* __LOCAL_PN544_H_ */
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c
@@ -1463,7 +1463,7 @@ static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout,
 	return port100_tg_send_cmd(ddev, skb, timeout, cb, arg);
 }
 
-static struct nfc_digital_ops port100_digital_ops = {
+static const struct nfc_digital_ops port100_digital_ops = {
 	.in_configure_hw = port100_in_configure_hw,
 	.in_send_cmd = port100_in_send_cmd,
 

diff --git a/drivers/nfc/s3fwrn5/core.c b/drivers/nfc/s3fwrn5/core.c
@@ -143,11 +143,13 @@ static int s3fwrn5_nci_post_setup(struct nci_dev *ndev)
 	return nci_core_init(info->ndev);
 }
 
-static struct nci_ops s3fwrn5_nci_ops = {
+static const struct nci_ops s3fwrn5_nci_ops = {
 	.open = s3fwrn5_nci_open,
 	.close = s3fwrn5_nci_close,
 	.send = s3fwrn5_nci_send,
 	.post_setup = s3fwrn5_nci_post_setup,
+	.prop_ops = s3fwrn5_nci_prop_ops,
+	.n_prop_ops = ARRAY_SIZE(s3fwrn5_nci_prop_ops),
 };
 
 int s3fwrn5_probe(struct nci_dev **ndev, void *phy_id, struct device *pdev,
@@ -167,9 +169,6 @@ int s3fwrn5_probe(struct nci_dev **ndev, void *phy_id, struct device *pdev,
 
 	s3fwrn5_set_mode(info, S3FWRN5_MODE_COLD);
 
-	s3fwrn5_nci_get_prop_ops(&s3fwrn5_nci_ops.prop_ops,
-		&s3fwrn5_nci_ops.n_prop_ops);
-
 	info->ndev = nci_allocate_device(&s3fwrn5_nci_ops,
 		S3FWRN5_NFC_PROTOCOLS, 0, 0);
 	if (!info->ndev)

diff --git a/drivers/nfc/s3fwrn5/nci.c b/drivers/nfc/s3fwrn5/nci.c
@@ -20,7 +20,7 @@ static int s3fwrn5_nci_prop_rsp(struct nci_dev *ndev, struct sk_buff *skb)
 	return 0;
 }
 
-static struct nci_driver_ops s3fwrn5_nci_prop_ops[] = {
+const struct nci_driver_ops s3fwrn5_nci_prop_ops[4] = {
 	{
 		.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
 				NCI_PROP_SET_RFREG),
@@ -43,12 +43,6 @@ static struct nci_driver_ops s3fwrn5_nci_prop_ops[] = {
 	},
 };
 
-void s3fwrn5_nci_get_prop_ops(struct nci_driver_ops **ops, size_t *n)
-{
-	*ops = s3fwrn5_nci_prop_ops;
-	*n = ARRAY_SIZE(s3fwrn5_nci_prop_ops);
-}
-
 #define S3FWRN5_RFREG_SECTION_SIZE 252
 
 int s3fwrn5_nci_rf_configure(struct s3fwrn5_info *info, const char *fw_name)

diff --git a/drivers/nfc/s3fwrn5/nci.h b/drivers/nfc/s3fwrn5/nci.h
@@ -50,7 +50,7 @@ struct nci_prop_fw_cfg_rsp {
 	__u8 status;
 };
 
-void s3fwrn5_nci_get_prop_ops(struct nci_driver_ops **ops, size_t *n);
+extern const struct nci_driver_ops s3fwrn5_nci_prop_ops[4];
 int s3fwrn5_nci_rf_configure(struct s3fwrn5_info *info, const char *fw_name);
 
 #endif /* __LOCAL_S3FWRN5_NCI_H_ */
diff --git a/drivers/nfc/st-nci/core.c b/drivers/nfc/st-nci/core.c
@@ -86,15 +86,15 @@ static int st_nci_prop_rsp_packet(struct nci_dev *ndev,
 	return 0;
 }
 
-static struct nci_driver_ops st_nci_prop_ops[] = {
+static const struct nci_driver_ops st_nci_prop_ops[] = {
 	{
 		.opcode = nci_opcode_pack(NCI_GID_PROPRIETARY,
 					  ST_NCI_CORE_PROP),
 		.rsp = st_nci_prop_rsp_packet,
 	},
 };
 
-static struct nci_ops st_nci_ops = {
+static const struct nci_ops st_nci_ops = {
 	.init = st_nci_init,
 	.open = st_nci_open,
 	.close = st_nci_close,
@@ -131,6 +131,7 @@ int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
 		| NFC_PROTO_ISO15693_MASK
 		| NFC_PROTO_NFC_DEP_MASK;
 
+	BUILD_BUG_ON(ARRAY_SIZE(st_nci_prop_ops) > NCI_MAX_PROPRIETARY_CMD);
 	ndlc->ndev = nci_allocate_device(&st_nci_ops, protocols,
 					phy_headroom, phy_tailroom);
 	if (!ndlc->ndev) {

diff --git a/drivers/nfc/st-nci/i2c.c b/drivers/nfc/st-nci/i2c.c
@@ -186,7 +186,7 @@ static irqreturn_t st_nci_irq_thread_fn(int irq, void *phy_id)
 	return IRQ_HANDLED;
 }
 
-static struct nfc_phy_ops i2c_phy_ops = {
+static const struct nfc_phy_ops i2c_phy_ops = {
 	.write = st_nci_i2c_write,
 	.enable = st_nci_i2c_enable,
 	.disable = st_nci_i2c_disable,

diff --git a/drivers/nfc/st-nci/ndlc.c b/drivers/nfc/st-nci/ndlc.c
@@ -253,9 +253,9 @@ static void ndlc_t2_timeout(struct timer_list *t)
 	schedule_work(&ndlc->sm_work);
 }
 
-int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
-	       int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id,
-	       struct st_nci_se_status *se_status)
+int ndlc_probe(void *phy_id, const struct nfc_phy_ops *phy_ops,
+	       struct device *dev, int phy_headroom, int phy_tailroom,
+	       struct llt_ndlc **ndlc_id, struct st_nci_se_status *se_status)
 {
 	struct llt_ndlc *ndlc;
 

diff --git a/drivers/nfc/st-nci/ndlc.h b/drivers/nfc/st-nci/ndlc.h
@@ -16,7 +16,7 @@ struct st_nci_se_status;
 /* Low Level Transport description */
 struct llt_ndlc {
 	struct nci_dev *ndev;
-	struct nfc_phy_ops *ops;
+	const struct nfc_phy_ops *ops;
 	void *phy_id;
 
 	struct timer_list t1_timer;
@@ -45,8 +45,8 @@ int ndlc_open(struct llt_ndlc *ndlc);
 void ndlc_close(struct llt_ndlc *ndlc);
 int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb);
 void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb);
-int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
-	       int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id,
-	       struct st_nci_se_status *se_status);
+int ndlc_probe(void *phy_id, const struct nfc_phy_ops *phy_ops,
+	       struct device *dev, int phy_headroom, int phy_tailroom,
+	       struct llt_ndlc **ndlc_id, struct st_nci_se_status *se_status);
 void ndlc_remove(struct llt_ndlc *ndlc);
 #endif /* __LOCAL_NDLC_H__ */