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authorGustavo A. R. Silva <garsilva@embeddedor.com>2017-07-11 16:18:36 -0500
committerLinus Walleij <linus.walleij@linaro.org>2017-08-14 15:01:01 +0200
commit8939aa5f5164b51b7ebd269a0443c8cd222214c4 (patch)
tree1bf0bcaa93426a8d8297f6ab8c09c57f057e3a66 /drivers/pinctrl
parent531bcf73083ac9ba01b2c2443429de6cd7e0ed69 (diff)
pinctrl: qcom: ssbi: mpp: 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 15136 5112 0 20248 4f18 drivers/pinctrl/qcom/pinctrl-ssbi-mpp.o after: bss dec hex filename 14849 5024 0 19873 4da1 drivers/pinctrl/qcom/pinctrl-ssbi-mpp.o Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
index 0d1392fc32dd..1e513bd6d0a9 100644
--- a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
@@ -643,7 +643,7 @@ static void pm8xxx_mpp_dbg_show(struct seq_file *s, struct gpio_chip *chip)
#define pm8xxx_mpp_dbg_show NULL
#endif
-static struct gpio_chip pm8xxx_mpp_template = {
+static const struct gpio_chip pm8xxx_mpp_template = {
.direction_input = pm8xxx_mpp_direction_input,
.direction_output = pm8xxx_mpp_direction_output,
.get = pm8xxx_mpp_get,