On Fri, Jan 27, 2017 at 11:36:17PM +0530, Bhumika Goyal wrote:
> Declare i2c_algorithm structures as const as they are only stored in the
> algo field of an i2c_adapter structure. This field is of type const, so
> i2c_algorithm structures having this property can be made const too.
> Done using Coccinelle:
>
> @r disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct i2c_algorithm i@p={...};
>
> @ok@
> identifier r.i,x;
> position p;
> struct i2c_adapter adapter;
> struct xlr_i2c_private priv;
> @@
> (
> adapter.algo=&i@p;
> |
> priv.adap.algo=&i@p;
> )
>
> @bad@
> position p!={r.p,ok.p};
> identifier r.i;
> @@
> i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r.i;
> @@
> +const
> struct i2c_algorithm i;
>
> File size details before and after patching.
> First line of every .o file shows the file size before patching
> and second line shows the size after patching.
>
> text data bss dec hex filename
>
> 9138 1328 8 10474 28ea drivers/i2c/busses/i2c-at91.o
> 9178 1280 8 10466 28e2 drivers/i2c/busses/i2c-at91.o
>
> 7555 657 8 8220 201c i2c/busses/i2c-designware-core.o
> 7619 617 8 8244 2034 i2c/busses/i2c-designware-core.o
>
> 7240 2240 120 9600 2580 drivers/i2c/busses/i2c-eg20t.o
> 7304 2176 120 9600 2580 drivers/i2c/busses/i2c-eg20t.o
>
> 2399 248 8 2655 a5f drivers/i2c/busses/i2c-emev2.o
> 2455 192 8 2655 a5f drivers/i2c/busses/i2c-emev2.o
>
> 3766 688 8 4462 116e i2c/busses/i2c-imx-lpi2c.o
> 3814 632 8 4454 1166 i2c/busses/i2c-imx-lpi2c.o
>
> 11793 4280 16 16089 3ed9 drivers/i2c/busses/i2c-imx.o
> 11857 4216 16 16089 3ed9 drivers/i2c/busses/i2c-imx.o
>
> 4046 656 8 4710 1266 drivers/i2c/busses/i2c-nforce2.o
> 4110 592 8 4710 1266 drivers/i2c/busses/i2c-nforce2.o
>
> 1397 464 0 1861 745 i2c/busses/i2c-robotfuzz-osif.o
> 1437 408 0 1845 735 i2c/busses/i2c-robotfuzz-osif.o
>
> 9622 1216 16 10854 2a66 i2c/busses/i2c-sh_mobile.o
> 9662 1160 16 10838 2a56 i2c/busses/i2c-sh_mobile.o
>
> 4936 576 8 5520 1590 drivers/i2c/busses/i2c-st.o
> 5000 512 8 5520 1590 drivers/i2c/busses/i2c-st.o
>
> 3404 248 8 3660 e4c i2c/busses/i2c-xgene-slimpro.o
> 3460 192 8 3660 e4c i2c/busses/i2c-xgene-slimpro.o
>
> 2741 600 8 3349 d15 drivers/i2c/busses/i2c-xlp9xx.o
> 2797 544 8 3349 d15 drivers/i2c/busses/i2c-xlp9xx.o
>
> 2643 248 8 2899 b53 drivers/i2c/busses/i2c-xlr.o
> 2707 192 8 2907 b5b drivers/i2c/busses/i2c-xlr.o
>
> Signed-off-by: Bhumika Goyal <bhumirks@xxxxxxxxx>
> ---
> drivers/i2c/busses/i2c-at91.c | 2 +-
Acked-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxxxxxx>
Regards
Ludovic
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