2016-12-26 17:06:19

by Bhumika Goyal

[permalink] [raw]
Subject: [PATCH v2] watchdog: constify watchdog_info structures

Declare watchdog_info structures as const as they are only stored in the
info field of watchdog_device structures. This field is of type const
struct watchdog_info *, so watchdog_info structures having this property
can be declared const too.
Done using Coccinelle:

@r1 disable optional_qualifier@
identifier i;
position p;
@@
static struct watchdog_info i@p={...};

@ok@
identifier r1.i;
position p;
struct watchdog_device obj;
@@
obj.info=&i@p;

@bad@
position p!={r1.p,ok.p};
identifier r1.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct watchdog_info i;

Signed-off-by: Bhumika Goyal <[email protected]>
---
Changes in v2:
* Drop "drivers:" from the subject line.
* Remove the file size details.

drivers/watchdog/bcm7038_wdt.c | 2 +-
drivers/watchdog/bcm_kona_wdt.c | 2 +-
drivers/watchdog/cadence_wdt.c | 2 +-
drivers/watchdog/da9052_wdt.c | 2 +-
drivers/watchdog/da9055_wdt.c | 2 +-
drivers/watchdog/digicolor_wdt.c | 2 +-
drivers/watchdog/imgpdc_wdt.c | 2 +-
drivers/watchdog/kempld_wdt.c | 2 +-
drivers/watchdog/lpc18xx_wdt.c | 2 +-
drivers/watchdog/rn5t618_wdt.c | 2 +-
drivers/watchdog/sbsa_gwdt.c | 2 +-
drivers/watchdog/w83627hf_wdt.c | 2 +-
12 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c
index e238df4..37c6a49 100644
--- a/drivers/watchdog/bcm7038_wdt.c
+++ b/drivers/watchdog/bcm7038_wdt.c
@@ -101,7 +101,7 @@ static unsigned int bcm7038_wdt_get_timeleft(struct watchdog_device *wdog)
return time_left / wdt->rate;
}

-static struct watchdog_info bcm7038_wdt_info = {
+static const struct watchdog_info bcm7038_wdt_info = {
.identity = "Broadcom BCM7038 Watchdog Timer",
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE
diff --git a/drivers/watchdog/bcm_kona_wdt.c b/drivers/watchdog/bcm_kona_wdt.c
index e0c9842..76b0080 100644
--- a/drivers/watchdog/bcm_kona_wdt.c
+++ b/drivers/watchdog/bcm_kona_wdt.c
@@ -274,7 +274,7 @@ static int bcm_kona_wdt_stop(struct watchdog_device *wdog)
.get_timeleft = bcm_kona_wdt_get_timeleft,
};

-static struct watchdog_info bcm_kona_wdt_info = {
+static const struct watchdog_info bcm_kona_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE |
WDIOF_KEEPALIVEPING,
.identity = "Broadcom Kona Watchdog Timer",
diff --git a/drivers/watchdog/cadence_wdt.c b/drivers/watchdog/cadence_wdt.c
index 98acef7..8d61e8b 100644
--- a/drivers/watchdog/cadence_wdt.c
+++ b/drivers/watchdog/cadence_wdt.c
@@ -262,7 +262,7 @@ static irqreturn_t cdns_wdt_irq_handler(int irq, void *dev_id)
* Info structure used to indicate the features supported by the device
* to the upper layers. This is defined in watchdog.h header file.
*/
-static struct watchdog_info cdns_wdt_info = {
+static const struct watchdog_info cdns_wdt_info = {
.identity = "cdns_wdt watchdog",
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
diff --git a/drivers/watchdog/da9052_wdt.c b/drivers/watchdog/da9052_wdt.c
index 2fc19a3..d86a57e 100644
--- a/drivers/watchdog/da9052_wdt.c
+++ b/drivers/watchdog/da9052_wdt.c
@@ -140,7 +140,7 @@ static int da9052_wdt_ping(struct watchdog_device *wdt_dev)
return ret;
}

-static struct watchdog_info da9052_wdt_info = {
+static const struct watchdog_info da9052_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
.identity = "DA9052 Watchdog",
};
diff --git a/drivers/watchdog/da9055_wdt.c b/drivers/watchdog/da9055_wdt.c
index 8377c43..4f30818 100644
--- a/drivers/watchdog/da9055_wdt.c
+++ b/drivers/watchdog/da9055_wdt.c
@@ -108,7 +108,7 @@ static int da9055_wdt_stop(struct watchdog_device *wdt_dev)
return da9055_wdt_set_timeout(wdt_dev, 0);
}

-static struct watchdog_info da9055_wdt_info = {
+static const struct watchdog_info da9055_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
.identity = "DA9055 Watchdog",
};
diff --git a/drivers/watchdog/digicolor_wdt.c b/drivers/watchdog/digicolor_wdt.c
index 77df772..dfe7294 100644
--- a/drivers/watchdog/digicolor_wdt.c
+++ b/drivers/watchdog/digicolor_wdt.c
@@ -105,7 +105,7 @@ static unsigned int dc_wdt_get_timeleft(struct watchdog_device *wdog)
.restart = dc_wdt_restart,
};

-static struct watchdog_info dc_wdt_info = {
+static const struct watchdog_info dc_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE
| WDIOF_KEEPALIVEPING,
.identity = "Conexant Digicolor Watchdog",
diff --git a/drivers/watchdog/imgpdc_wdt.c b/drivers/watchdog/imgpdc_wdt.c
index 516fbef..6ed39de 100644
--- a/drivers/watchdog/imgpdc_wdt.c
+++ b/drivers/watchdog/imgpdc_wdt.c
@@ -161,7 +161,7 @@ static int pdc_wdt_restart(struct watchdog_device *wdt_dev,
return 0;
}

-static struct watchdog_info pdc_wdt_info = {
+static const struct watchdog_info pdc_wdt_info = {
.identity = "IMG PDC Watchdog",
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/kempld_wdt.c b/drivers/watchdog/kempld_wdt.c
index 8e302d0..73c46b3 100644
--- a/drivers/watchdog/kempld_wdt.c
+++ b/drivers/watchdog/kempld_wdt.c
@@ -422,7 +422,7 @@ static int kempld_wdt_probe_stages(struct watchdog_device *wdd)
return 0;
}

-static struct watchdog_info kempld_wdt_info = {
+static const struct watchdog_info kempld_wdt_info = {
.identity = "KEMPLD Watchdog",
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/lpc18xx_wdt.c b/drivers/watchdog/lpc18xx_wdt.c
index fd171e6..3b8bb59 100644
--- a/drivers/watchdog/lpc18xx_wdt.c
+++ b/drivers/watchdog/lpc18xx_wdt.c
@@ -181,7 +181,7 @@ static int lpc18xx_wdt_restart(struct watchdog_device *wdt_dev,
return 0;
}

-static struct watchdog_info lpc18xx_wdt_info = {
+static const struct watchdog_info lpc18xx_wdt_info = {
.identity = "NXP LPC18xx Watchdog",
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/rn5t618_wdt.c b/drivers/watchdog/rn5t618_wdt.c
index 0805ee2..e60f557 100644
--- a/drivers/watchdog/rn5t618_wdt.c
+++ b/drivers/watchdog/rn5t618_wdt.c
@@ -130,7 +130,7 @@ static int rn5t618_wdt_ping(struct watchdog_device *wdt_dev)
RN5T618_PWRIRQ_IR_WDOG, 0);
}

-static struct watchdog_info rn5t618_wdt_info = {
+static const struct watchdog_info rn5t618_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE |
WDIOF_KEEPALIVEPING,
.identity = DRIVER_NAME,
diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c
index ce0c38b..e9966bc 100644
--- a/drivers/watchdog/sbsa_gwdt.c
+++ b/drivers/watchdog/sbsa_gwdt.c
@@ -207,7 +207,7 @@ static irqreturn_t sbsa_gwdt_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}

-static struct watchdog_info sbsa_gwdt_info = {
+static const struct watchdog_info sbsa_gwdt_info = {
.identity = WATCHDOG_NAME,
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
index ef2ecaf..98fd186 100644
--- a/drivers/watchdog/w83627hf_wdt.c
+++ b/drivers/watchdog/w83627hf_wdt.c
@@ -297,7 +297,7 @@ static unsigned int wdt_get_time(struct watchdog_device *wdog)
* Kernel Interfaces
*/

-static struct watchdog_info wdt_info = {
+static const struct watchdog_info wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
.identity = "W83627HF Watchdog",
};
--
1.9.1


2016-12-26 20:12:40

by Florian Fainelli

[permalink] [raw]
Subject: Re: [PATCH v2] watchdog: constify watchdog_info structures

Le 12/26/16 à 09:05, Bhumika Goyal a écrit :
> Signed-off-by: Bhumika Goyal <[email protected]>
> ---
> Changes in v2:
> * Drop "drivers:" from the subject line.
> * Remove the file size details.
>
> drivers/watchdog/bcm7038_wdt.c | 2 +-

> diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c
> index e238df4..37c6a49 100644
> --- a/drivers/watchdog/bcm7038_wdt.c
> +++ b/drivers/watchdog/bcm7038_wdt.c
> @@ -101,7 +101,7 @@ static unsigned int bcm7038_wdt_get_timeleft(struct watchdog_device *wdog)
> return time_left / wdt->rate;
> }

For BCM7038 WDT:

Acked-by: Florian Fainelli <[email protected]>
--
Florian

2016-12-27 05:08:21

by Baruch Siach

[permalink] [raw]
Subject: Re: [PATCH v2] watchdog: constify watchdog_info structures

Hi Bhumika Goyal,

On Mon, Dec 26, 2016 at 10:35:11PM +0530, Bhumika Goyal wrote:
> Declare watchdog_info structures as const as they are only stored in the
> info field of watchdog_device structures. This field is of type const
> struct watchdog_info *, so watchdog_info structures having this property
> can be declared const too.
> Done using Coccinelle:
>
> @r1 disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct watchdog_info i@p={...};
>
> @ok@
> identifier r1.i;
> position p;
> struct watchdog_device obj;
> @@
> obj.info=&i@p;
>
> @bad@
> position p!={r1.p,ok.p};
> identifier r1.i;
> @@
> i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r1.i;
> @@
> +const
> struct watchdog_info i;
>
> Signed-off-by: Bhumika Goyal <[email protected]>

For digicolor_wdt.c:

Acked-by: Baruch Siach <[email protected]>

Thanks,
baruch

--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- [email protected] - tel: +972.52.368.4656, http://www.tkos.co.il -

2016-12-28 15:26:54

by Guenter Roeck

[permalink] [raw]
Subject: Re: [PATCH v2] watchdog: constify watchdog_info structures

On 12/26/2016 09:05 AM, Bhumika Goyal wrote:
> Declare watchdog_info structures as const as they are only stored in the
> info field of watchdog_device structures. This field is of type const
> struct watchdog_info *, so watchdog_info structures having this property
> can be declared const too.
> Done using Coccinelle:
>
> @r1 disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct watchdog_info i@p={...};
>
> @ok@
> identifier r1.i;
> position p;
> struct watchdog_device obj;
> @@
> obj.info=&i@p;
>
> @bad@
> position p!={r1.p,ok.p};
> identifier r1.i;
> @@
> i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r1.i;
> @@
> +const
> struct watchdog_info i;
>
> Signed-off-by: Bhumika Goyal <[email protected]>

Reviewed-by: Guenter Roeck <[email protected]>

> ---
> Changes in v2:
> * Drop "drivers:" from the subject line.
> * Remove the file size details.
>
> drivers/watchdog/bcm7038_wdt.c | 2 +-
> drivers/watchdog/bcm_kona_wdt.c | 2 +-
> drivers/watchdog/cadence_wdt.c | 2 +-
> drivers/watchdog/da9052_wdt.c | 2 +-
> drivers/watchdog/da9055_wdt.c | 2 +-
> drivers/watchdog/digicolor_wdt.c | 2 +-
> drivers/watchdog/imgpdc_wdt.c | 2 +-
> drivers/watchdog/kempld_wdt.c | 2 +-
> drivers/watchdog/lpc18xx_wdt.c | 2 +-
> drivers/watchdog/rn5t618_wdt.c | 2 +-
> drivers/watchdog/sbsa_gwdt.c | 2 +-
> drivers/watchdog/w83627hf_wdt.c | 2 +-
> 12 files changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c
> index e238df4..37c6a49 100644
> --- a/drivers/watchdog/bcm7038_wdt.c
> +++ b/drivers/watchdog/bcm7038_wdt.c
> @@ -101,7 +101,7 @@ static unsigned int bcm7038_wdt_get_timeleft(struct watchdog_device *wdog)
> return time_left / wdt->rate;
> }
>
> -static struct watchdog_info bcm7038_wdt_info = {
> +static const struct watchdog_info bcm7038_wdt_info = {
> .identity = "Broadcom BCM7038 Watchdog Timer",
> .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
> WDIOF_MAGICCLOSE
> diff --git a/drivers/watchdog/bcm_kona_wdt.c b/drivers/watchdog/bcm_kona_wdt.c
> index e0c9842..76b0080 100644
> --- a/drivers/watchdog/bcm_kona_wdt.c
> +++ b/drivers/watchdog/bcm_kona_wdt.c
> @@ -274,7 +274,7 @@ static int bcm_kona_wdt_stop(struct watchdog_device *wdog)
> .get_timeleft = bcm_kona_wdt_get_timeleft,
> };
>
> -static struct watchdog_info bcm_kona_wdt_info = {
> +static const struct watchdog_info bcm_kona_wdt_info = {
> .options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE |
> WDIOF_KEEPALIVEPING,
> .identity = "Broadcom Kona Watchdog Timer",
> diff --git a/drivers/watchdog/cadence_wdt.c b/drivers/watchdog/cadence_wdt.c
> index 98acef7..8d61e8b 100644
> --- a/drivers/watchdog/cadence_wdt.c
> +++ b/drivers/watchdog/cadence_wdt.c
> @@ -262,7 +262,7 @@ static irqreturn_t cdns_wdt_irq_handler(int irq, void *dev_id)
> * Info structure used to indicate the features supported by the device
> * to the upper layers. This is defined in watchdog.h header file.
> */
> -static struct watchdog_info cdns_wdt_info = {
> +static const struct watchdog_info cdns_wdt_info = {
> .identity = "cdns_wdt watchdog",
> .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
> WDIOF_MAGICCLOSE,
> diff --git a/drivers/watchdog/da9052_wdt.c b/drivers/watchdog/da9052_wdt.c
> index 2fc19a3..d86a57e 100644
> --- a/drivers/watchdog/da9052_wdt.c
> +++ b/drivers/watchdog/da9052_wdt.c
> @@ -140,7 +140,7 @@ static int da9052_wdt_ping(struct watchdog_device *wdt_dev)
> return ret;
> }
>
> -static struct watchdog_info da9052_wdt_info = {
> +static const struct watchdog_info da9052_wdt_info = {
> .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
> .identity = "DA9052 Watchdog",
> };
> diff --git a/drivers/watchdog/da9055_wdt.c b/drivers/watchdog/da9055_wdt.c
> index 8377c43..4f30818 100644
> --- a/drivers/watchdog/da9055_wdt.c
> +++ b/drivers/watchdog/da9055_wdt.c
> @@ -108,7 +108,7 @@ static int da9055_wdt_stop(struct watchdog_device *wdt_dev)
> return da9055_wdt_set_timeout(wdt_dev, 0);
> }
>
> -static struct watchdog_info da9055_wdt_info = {
> +static const struct watchdog_info da9055_wdt_info = {
> .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
> .identity = "DA9055 Watchdog",
> };
> diff --git a/drivers/watchdog/digicolor_wdt.c b/drivers/watchdog/digicolor_wdt.c
> index 77df772..dfe7294 100644
> --- a/drivers/watchdog/digicolor_wdt.c
> +++ b/drivers/watchdog/digicolor_wdt.c
> @@ -105,7 +105,7 @@ static unsigned int dc_wdt_get_timeleft(struct watchdog_device *wdog)
> .restart = dc_wdt_restart,
> };
>
> -static struct watchdog_info dc_wdt_info = {
> +static const struct watchdog_info dc_wdt_info = {
> .options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE
> | WDIOF_KEEPALIVEPING,
> .identity = "Conexant Digicolor Watchdog",
> diff --git a/drivers/watchdog/imgpdc_wdt.c b/drivers/watchdog/imgpdc_wdt.c
> index 516fbef..6ed39de 100644
> --- a/drivers/watchdog/imgpdc_wdt.c
> +++ b/drivers/watchdog/imgpdc_wdt.c
> @@ -161,7 +161,7 @@ static int pdc_wdt_restart(struct watchdog_device *wdt_dev,
> return 0;
> }
>
> -static struct watchdog_info pdc_wdt_info = {
> +static const struct watchdog_info pdc_wdt_info = {
> .identity = "IMG PDC Watchdog",
> .options = WDIOF_SETTIMEOUT |
> WDIOF_KEEPALIVEPING |
> diff --git a/drivers/watchdog/kempld_wdt.c b/drivers/watchdog/kempld_wdt.c
> index 8e302d0..73c46b3 100644
> --- a/drivers/watchdog/kempld_wdt.c
> +++ b/drivers/watchdog/kempld_wdt.c
> @@ -422,7 +422,7 @@ static int kempld_wdt_probe_stages(struct watchdog_device *wdd)
> return 0;
> }
>
> -static struct watchdog_info kempld_wdt_info = {
> +static const struct watchdog_info kempld_wdt_info = {
> .identity = "KEMPLD Watchdog",
> .options = WDIOF_SETTIMEOUT |
> WDIOF_KEEPALIVEPING |
> diff --git a/drivers/watchdog/lpc18xx_wdt.c b/drivers/watchdog/lpc18xx_wdt.c
> index fd171e6..3b8bb59 100644
> --- a/drivers/watchdog/lpc18xx_wdt.c
> +++ b/drivers/watchdog/lpc18xx_wdt.c
> @@ -181,7 +181,7 @@ static int lpc18xx_wdt_restart(struct watchdog_device *wdt_dev,
> return 0;
> }
>
> -static struct watchdog_info lpc18xx_wdt_info = {
> +static const struct watchdog_info lpc18xx_wdt_info = {
> .identity = "NXP LPC18xx Watchdog",
> .options = WDIOF_SETTIMEOUT |
> WDIOF_KEEPALIVEPING |
> diff --git a/drivers/watchdog/rn5t618_wdt.c b/drivers/watchdog/rn5t618_wdt.c
> index 0805ee2..e60f557 100644
> --- a/drivers/watchdog/rn5t618_wdt.c
> +++ b/drivers/watchdog/rn5t618_wdt.c
> @@ -130,7 +130,7 @@ static int rn5t618_wdt_ping(struct watchdog_device *wdt_dev)
> RN5T618_PWRIRQ_IR_WDOG, 0);
> }
>
> -static struct watchdog_info rn5t618_wdt_info = {
> +static const struct watchdog_info rn5t618_wdt_info = {
> .options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE |
> WDIOF_KEEPALIVEPING,
> .identity = DRIVER_NAME,
> diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c
> index ce0c38b..e9966bc 100644
> --- a/drivers/watchdog/sbsa_gwdt.c
> +++ b/drivers/watchdog/sbsa_gwdt.c
> @@ -207,7 +207,7 @@ static irqreturn_t sbsa_gwdt_interrupt(int irq, void *dev_id)
> return IRQ_HANDLED;
> }
>
> -static struct watchdog_info sbsa_gwdt_info = {
> +static const struct watchdog_info sbsa_gwdt_info = {
> .identity = WATCHDOG_NAME,
> .options = WDIOF_SETTIMEOUT |
> WDIOF_KEEPALIVEPING |
> diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
> index ef2ecaf..98fd186 100644
> --- a/drivers/watchdog/w83627hf_wdt.c
> +++ b/drivers/watchdog/w83627hf_wdt.c
> @@ -297,7 +297,7 @@ static unsigned int wdt_get_time(struct watchdog_device *wdog)
> * Kernel Interfaces
> */
>
> -static struct watchdog_info wdt_info = {
> +static const struct watchdog_info wdt_info = {
> .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
> .identity = "W83627HF Watchdog",
> };
>