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author | Gustavo A. R. Silva <garsilva@embeddedor.com> | 2017-07-11 17:15:38 -0500 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2017-08-14 15:01:12 +0200 |
commit | 1a20c3f8e8c28357b63829ae4b16a212a4a7ef31 (patch) | |
tree | cfcadb589a96c32b2c7c4582c02951faa0c84afb /drivers/gpio/gpio-davinci.c | |
parent | 8340e915ea27b886f1ad52d1d68aad7cf20f802a (diff) | |
download | linux-1a20c3f8e8c28357b63829ae4b16a212a4a7ef31.tar.gz |
gpio: altera-a10sr: constify gpio_chip structure
This structure is only used to copy into another structure, so declare it as const. This issue was detected using Coccinelle and the following semantic patch: @r disable optional_qualifier@ identifier i; position p; @@ static struct gpio_chip i@p = { ... }; @ok@ identifier r.i; expression e; position p; @@ e = i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; struct gpio_chip e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct gpio_chip i = { ... }; In the following log you can see a significant difference in the code size and data segment, hence in the dec segment. This log is the output of the size command, before and after the code change: before: text data bss dec hex filename 1954 600 0 2554 9fa drivers/gpio/gpio-altera-a10sr.o after: text data bss dec hex filename 1655 512 0 2167 877 drivers/gpio/gpio-altera-a10sr.o Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Reviewed-by: Thor Thayer <thor.thayer@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-davinci.c')
0 files changed, 0 insertions, 0 deletions