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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>
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@ -103,7 +103,7 @@ static void bfin_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
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disable_gptimer(priv->pin);
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}
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static struct pwm_ops bfin_pwm_ops = {
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static const struct pwm_ops bfin_pwm_ops = {
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.request = bfin_pwm_request,
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.free = bfin_pwm_free,
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.config = bfin_pwm_config,
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@ -240,7 +240,7 @@ static void imx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
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clk_disable_unprepare(imx->clk_per);
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}
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static struct pwm_ops imx_pwm_ops = {
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static const struct pwm_ops imx_pwm_ops = {
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.enable = imx_pwm_enable,
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.disable = imx_pwm_disable,
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.config = imx_pwm_config,
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@ -118,7 +118,7 @@ static void pxa_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
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clk_disable_unprepare(pc->clk);
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}
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static struct pwm_ops pxa_pwm_ops = {
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static const struct pwm_ops pxa_pwm_ops = {
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.config = pxa_pwm_config,
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.enable = pxa_pwm_enable,
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.disable = pxa_pwm_disable,
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@ -184,7 +184,7 @@ static int vt8500_pwm_set_polarity(struct pwm_chip *chip,
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return 0;
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}
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static struct pwm_ops vt8500_pwm_ops = {
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static const struct pwm_ops vt8500_pwm_ops = {
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.enable = vt8500_pwm_enable,
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.disable = vt8500_pwm_disable,
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.config = vt8500_pwm_config,
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