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authorGustavo A. R. Silva <garsilva@embeddedor.com>2017-07-11 16:29:29 -0500
committerLinus Walleij <linus.walleij@linaro.org>2017-08-14 15:00:59 +0200
commitd3761023e7a45977491f99658e767afbfff4dac3 (patch)
tree0d31e1340190bd32275a2542310f67b18695ffaf /drivers/pinctrl/nomadik
parent3d9c25634a24926bd5551881fa4485c1c1dcf86e (diff)
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pinctrl: nomadik: abx500: 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 17545 5376 0 22921 5989 drivers/pinctrl/nomadik/pinctrl-abx500.o after: bss dec hex filename 17273 5320 0 22593 5841 drivers/pinctrl/nomadik/pinctrl-abx500.o Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/nomadik')
-rw-r--r--drivers/pinctrl/nomadik/pinctrl-abx500.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pinctrl/nomadik/pinctrl-abx500.c b/drivers/pinctrl/nomadik/pinctrl-abx500.c
index f95001bc1d58..b32c0d602024 100644
--- a/drivers/pinctrl/nomadik/pinctrl-abx500.c
+++ b/drivers/pinctrl/nomadik/pinctrl-abx500.c
@@ -647,7 +647,7 @@ static inline void abx500_gpio_dbg_show_one(struct seq_file *s,
#define abx500_gpio_dbg_show NULL
#endif
-static struct gpio_chip abx500gpio_chip = {
+static const struct gpio_chip abx500gpio_chip = {
.label = "abx500-gpio",
.owner = THIS_MODULE,
.request = gpiochip_generic_request,