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authorBhumika Goyal <bhumirks@gmail.com>2017-01-10 21:12:06 +0300
committerThierry Reding <thierry.reding@gmail.com>2017-01-19 02:38:17 +0300
commitb2ec9efc1f4fb1dc13a599db88019d5472deef9b (patch)
tree636448e483d5ff790b80de372d0bc5dc112c068d /drivers/pwm
parent5bf22ff32e736beb8ba91a99a3e116d12e7eabd0 (diff)
downloadlinux-b2ec9efc1f4fb1dc13a599db88019d5472deef9b.tar.xz
pwm: constify pwm_ops structures
Declare pwm_ops structures as const as they are only stored in the ops field of a pwm_chip structure. This field is of type const struct pwm_ops *, so pwm_ops structures having this property can be declared as const. Done using Coccinelle: @r1 disable optional_qualifier@ identifier i; position p; @@ static struct pwm_ops i@p={...}; @ok1@ identifier r1.i; position p; struct pxa_pwm_chip pwm; struct bfin_pwm_chip bwm; struct vt8500_chip vp; struct imx_chip icp; @@ ( pwm.chip.ops=&i@p | bwm.chip.ops=&i@p | vp.chip.ops=&i@p | icp.chip.ops=&i@p ) @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct pwm_ops i; File size details: text data bss dec hex filename 1646 328 0 1974 7b6 drivers/pwm/pwm-imx.o 1742 224 0 1966 7ae drivers/pwm/pwm-imx.o 1941 296 0 2237 8bd drivers/pwm/pwm-pxa.o 2037 192 0 2229 8b5 drivers/pwm/pwm-pxa.o 1946 296 0 2242 8c2 drivers/pwm/pwm-vt8500.o 2050 192 0 2242 8c2 drivers/pwm/pwm-vt8500.o The drivers/pwm/pwm-bfin.o file did not compile. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-bfin.c2
-rw-r--r--drivers/pwm/pwm-imx.c2
-rw-r--r--drivers/pwm/pwm-pxa.c2
-rw-r--r--drivers/pwm/pwm-vt8500.c2
4 files changed, 4 insertions, 4 deletions
diff --git a/drivers/pwm/pwm-bfin.c b/drivers/pwm/pwm-bfin.c
index 7631ef194de7..d2ed0a2a18e8 100644
--- a/drivers/pwm/pwm-bfin.c
+++ b/drivers/pwm/pwm-bfin.c
@@ -103,7 +103,7 @@ static void bfin_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
disable_gptimer(priv->pin);
}
-static struct pwm_ops bfin_pwm_ops = {
+static const struct pwm_ops bfin_pwm_ops = {
.request = bfin_pwm_request,
.free = bfin_pwm_free,
.config = bfin_pwm_config,
diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c
index d600fd5cd4ba..177fb81c916d 100644
--- a/drivers/pwm/pwm-imx.c
+++ b/drivers/pwm/pwm-imx.c
@@ -240,7 +240,7 @@ static void imx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
clk_disable_unprepare(imx->clk_per);
}
-static struct pwm_ops imx_pwm_ops = {
+static const struct pwm_ops imx_pwm_ops = {
.enable = imx_pwm_enable,
.disable = imx_pwm_disable,
.config = imx_pwm_config,
diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c
index 58b709f29130..4143a46684d2 100644
--- a/drivers/pwm/pwm-pxa.c
+++ b/drivers/pwm/pwm-pxa.c
@@ -118,7 +118,7 @@ static void pxa_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
clk_disable_unprepare(pc->clk);
}
-static struct pwm_ops pxa_pwm_ops = {
+static const struct pwm_ops pxa_pwm_ops = {
.config = pxa_pwm_config,
.enable = pxa_pwm_enable,
.disable = pxa_pwm_disable,
diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c
index cdb58fd4619d..8141a4984126 100644
--- a/drivers/pwm/pwm-vt8500.c
+++ b/drivers/pwm/pwm-vt8500.c
@@ -184,7 +184,7 @@ static int vt8500_pwm_set_polarity(struct pwm_chip *chip,
return 0;
}
-static struct pwm_ops vt8500_pwm_ops = {
+static const struct pwm_ops vt8500_pwm_ops = {
.enable = vt8500_pwm_enable,
.disable = vt8500_pwm_disable,
.config = vt8500_pwm_config,