kernel_optimize_test/drivers/nfc
Johannes Berg 634fef6107 networking: add and use skb_put_u8()
Joe and Bjørn suggested that it'd be nicer to not have the
cast in the fairly common case of doing
	*(u8 *)skb_put(skb, 1) = c;

Add skb_put_u8() for this case, and use it across the code,
using the following spatch:

    @@
    expression SKB, C, S;
    typedef u8;
    identifier fn = {skb_put};
    fresh identifier fn2 = fn ## "_u8";
    @@
    - *(u8 *)fn(SKB, S) = C;
    + fn2(SKB, C);

Note that due to the "S", the spatch isn't perfect, it should
have checked that S is 1, but there's also places that use a
sizeof expression like sizeof(var) or sizeof(u8) etc. Turns
out that nobody ever did something like
	*(u8 *)skb_put(skb, 2) = c;

which would be wrong anyway since the second byte wouldn't be
initialized.

Suggested-by: Joe Perches <joe@perches.com>
Suggested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 11:48:40 -04:00
..
fdp networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
microread networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
nfcmrvl networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
nxp-nci networking: make skb_pull & friends return void pointers 2017-06-16 11:48:39 -04:00
pn533 networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
pn544 networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
s3fwrn5 networking: introduce and use skb_put_data() 2017-06-16 11:48:37 -04:00
st-nci networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
st21nfca networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
st95hf networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
Kconfig NFC: remove TI nfcwilink driver 2017-04-01 23:04:30 +02:00
Makefile NFC: remove TI nfcwilink driver 2017-04-01 23:04:30 +02:00
mei_phy.c mei: bus: split RX and async notification callbacks 2016-11-17 16:37:49 +01:00
mei_phy.h mei: bus: complete variable rename of type struct mei_cl_device 2015-09-20 19:31:09 -07:00
nfcsim.c NFC: nfcsim: Simulate lost frames through debugfs entry 2016-07-19 23:24:49 +02:00
port100.c networking: add and use skb_put_u8() 2017-06-16 11:48:40 -04:00
trf7970a.c NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage 2017-04-05 11:04:03 +02:00