From 4df864c1d9afb46e2461a9f808d9f11a42d31bad Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Jun 2017 14:29:21 +0200 Subject: networking: make skb_put & friends return void pointers It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- drivers/nfc/pn533/pn533.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) (limited to 'drivers/nfc/pn533') diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c index 9200bb308e42..68a3cd0287f6 100644 --- a/drivers/nfc/pn533/pn533.c +++ b/drivers/nfc/pn533/pn533.c @@ -1032,7 +1032,7 @@ static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev) return NULL; /* DEP support only */ - *skb_put(skb, 1) = PN533_INIT_TARGET_DEP; + *(u8 *)skb_put(skb, 1) = PN533_INIT_TARGET_DEP; /* MIFARE params */ skb_put_data(skb, mifare_params, 6); @@ -1046,12 +1046,12 @@ static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev) memcpy(nfcid3, felica, 8); /* General bytes */ - *skb_put(skb, 1) = gbytes_len; + *(u8 *)skb_put(skb, 1) = gbytes_len; gb = skb_put_data(skb, gbytes, gbytes_len); /* Len Tk */ - *skb_put(skb, 1) = 0; + *(u8 *)skb_put(skb, 1) = 0; return skb; } @@ -1280,8 +1280,8 @@ static void pn533_wq_rf(struct work_struct *work) if (!skb) return; - *skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD; - *skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD_AUTO_RFCA; + *(u8 *)skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD; + *(u8 *)skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD_AUTO_RFCA; rc = pn533_send_cmd_async(dev, PN533_CMD_RF_CONFIGURATION, skb, pn533_rf_complete, NULL); @@ -1375,8 +1375,8 @@ static int pn533_poll_dep(struct nfc_dev *nfc_dev) if (!skb) return -ENOMEM; - *skb_put(skb, 1) = 0x01; /* Active */ - *skb_put(skb, 1) = 0x02; /* 424 kbps */ + *(u8 *)skb_put(skb, 1) = 0x01; /* Active */ + *(u8 *)skb_put(skb, 1) = 0x02; /* 424 kbps */ next = skb_put(skb, 1); /* Next */ *next = 0; @@ -1620,8 +1620,8 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev) if (!skb) return -ENOMEM; - *skb_put(skb, sizeof(u8)) = 1; /* TG */ - *skb_put(skb, sizeof(u8)) = 0; /* Next */ + *(u8 *)skb_put(skb, sizeof(u8)) = 1; /* TG */ + *(u8 *)skb_put(skb, sizeof(u8)) = 0; /* Next */ resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb); if (IS_ERR(resp)) @@ -1737,7 +1737,7 @@ static void pn533_deactivate_target(struct nfc_dev *nfc_dev, if (!skb) return; - *skb_put(skb, 1) = 1; /* TG*/ + *(u8 *)skb_put(skb, 1) = 1; /* TG*/ rc = pn533_send_cmd_async(dev, PN533_CMD_IN_RELEASE, skb, pn533_deactivate_target_complete, NULL); @@ -1848,8 +1848,8 @@ static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, if (!skb) return -ENOMEM; - *skb_put(skb, 1) = !comm_mode; /* ActPass */ - *skb_put(skb, 1) = 0x02; /* 424 kbps */ + *(u8 *)skb_put(skb, 1) = !comm_mode; /* ActPass */ + *(u8 *)skb_put(skb, 1) = 0x02; /* 424 kbps */ next = skb_put(skb, 1); /* Next */ *next = 0; @@ -2274,7 +2274,7 @@ static void pn533_wq_mi_recv(struct work_struct *work) break; } default: - *skb_put(skb, sizeof(u8)) = 1; /*TG*/ + *(u8 *)skb_put(skb, sizeof(u8)) = 1; /*TG*/ rc = pn533_send_cmd_direct_async(dev, PN533_CMD_IN_DATA_EXCHANGE, @@ -2370,7 +2370,7 @@ static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, if (!skb) return -ENOMEM; - *skb_put(skb, sizeof(cfgitem)) = cfgitem; + *(u8 *)skb_put(skb, sizeof(cfgitem)) = cfgitem; skb_put_data(skb, cfgdata, cfgdata_len); resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb); @@ -2415,7 +2415,7 @@ static int pn533_pasori_fw_reset(struct pn533 *dev) if (!skb) return -ENOMEM; - *skb_put(skb, sizeof(u8)) = 0x1; + *(u8 *)skb_put(skb, sizeof(u8)) = 0x1; resp = pn533_send_cmd_sync(dev, 0x18, skb); if (IS_ERR(resp)) @@ -2454,7 +2454,7 @@ static int pn532_sam_configuration(struct nfc_dev *nfc_dev) if (!skb) return -ENOMEM; - *skb_put(skb, 1) = 0x01; + *(u8 *)skb_put(skb, 1) = 0x01; resp = pn533_send_cmd_sync(dev, PN533_CMD_SAM_CONFIGURATION, skb); if (IS_ERR(resp)) -- cgit v1.2.3-70-g09d2