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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:21 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 17:48:39 +0200
commit4df864c1d9afb46e2461a9f808d9f11a42d31bad (patch)
tree07e7b3d16b161e0d199c5b8116df277798566e4f /drivers/nfc/pn533
parentnetworking: introduce and use skb_put_data() (diff)
downloadlinux-4df864c1d9afb46e2461a9f808d9f11a42d31bad.tar.xz
linux-4df864c1d9afb46e2461a9f808d9f11a42d31bad.zip
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 <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/nfc/pn533')
-rw-r--r--drivers/nfc/pn533/pn533.c32
1 files changed, 16 insertions, 16 deletions
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))