2011-04-27 18:15:05

by James Nuss

Subject: [PATCH 1/2] pps: default echo function

A default echo function has been provided so it is no longer an
error when you specify PPS_ECHOASSERT or PPS_ECHOCLEAR without an explicit
echo function. This allows some code re-use and also makes it easier
to write client drivers since the default echo function does not
normally need to change.

Signed-off-by: James Nuss <[email protected]>
Reviewed-by: Ben Gardiner <[email protected]>
---
drivers/pps/clients/pps-ktimer.c | 12 ------------
drivers/pps/clients/pps_parport.c | 9 ---------
drivers/pps/kapi.c | 20 +++++++++++++-------
3 files changed, 13 insertions(+), 28 deletions(-)

diff --git a/drivers/pps/clients/pps-ktimer.c b/drivers/pps/clients/pps-ktimer.c
index 82583b0..436b4e4 100644
--- a/drivers/pps/clients/pps-ktimer.c
+++ b/drivers/pps/clients/pps-ktimer.c
@@ -52,17 +52,6 @@ static void pps_ktimer_event(unsigned long ptr)
}

/*
- * The echo function
- */
-
-static void pps_ktimer_echo(struct pps_device *pps, int event, void *data)
-{
- dev_info(pps->dev, "echo %s %s\n",
- event & PPS_CAPTUREASSERT ? "assert" : "",
- event & PPS_CAPTURECLEAR ? "clear" : "");
-}
-
-/*
* The PPS info struct
*/

@@ -72,7 +61,6 @@ static struct pps_source_info pps_ktimer_info = {
.mode = PPS_CAPTUREASSERT | PPS_OFFSETASSERT |
PPS_ECHOASSERT |
PPS_CANWAIT | PPS_TSFMT_TSPEC,
- .echo = pps_ktimer_echo,
.owner = THIS_MODULE,
};

diff --git a/drivers/pps/clients/pps_parport.c b/drivers/pps/clients/pps_parport.c
index c571d6d..e1b4705 100644
--- a/drivers/pps/clients/pps_parport.c
+++ b/drivers/pps/clients/pps_parport.c
@@ -133,14 +133,6 @@ out_both:
return;
}

-/* the PPS echo function */
-static void pps_echo(struct pps_device *pps, int event, void *data)
-{
- dev_info(pps->dev, "echo %s %s\n",
- event & PPS_CAPTUREASSERT ? "assert" : "",
- event & PPS_CAPTURECLEAR ? "clear" : "");
-}
-
static void parport_attach(struct parport *port)
{
struct pps_client_pp *device;
@@ -151,7 +143,6 @@ static void parport_attach(struct parport *port)
PPS_OFFSETASSERT | PPS_OFFSETCLEAR | \
PPS_ECHOASSERT | PPS_ECHOCLEAR | \
PPS_CANWAIT | PPS_TSFMT_TSPEC,
- .echo = pps_echo,
.owner = THIS_MODULE,
.dev = NULL
};
diff --git a/drivers/pps/kapi.c b/drivers/pps/kapi.c
index a4e8eb9..f197e8e 100644
--- a/drivers/pps/kapi.c
+++ b/drivers/pps/kapi.c
@@ -52,6 +52,14 @@ static void pps_add_offset(struct pps_ktime *ts, struct pps_ktime *offset)
ts->sec += offset->sec;
}

+static void pps_echo_client_default(struct pps_device *pps, int event,
+ void *data)
+{
+ dev_info(pps->dev, "echo %s %s\n",
+ event & PPS_CAPTUREASSERT ? "assert" : "",
+ event & PPS_CAPTURECLEAR ? "clear" : "");
+}
+
/*
* Exported functions
*/
@@ -80,13 +88,6 @@ struct pps_device *pps_register_source(struct pps_source_info *info,
err = -EINVAL;
goto pps_register_source_exit;
}
- if ((info->mode & (PPS_ECHOASSERT | PPS_ECHOCLEAR)) != 0 &&
- info->echo == NULL) {
- pr_err("%s: echo function is not defined\n",
- info->name);
- err = -EINVAL;
- goto pps_register_source_exit;
- }
if ((info->mode & (PPS_TSFMT_TSPEC | PPS_TSFMT_NTPFP)) == 0) {
pr_err("%s: unspecified time format\n",
info->name);
@@ -108,6 +109,11 @@ struct pps_device *pps_register_source(struct pps_source_info *info,
pps->params.mode = default_params;
pps->info = *info;

+ /* check for default echo function */
+ if ((pps->info.mode & (PPS_ECHOASSERT | PPS_ECHOCLEAR)) &&
+ pps->info.echo == NULL)
+ pps->info.echo = pps_echo_client_default;
+
init_waitqueue_head(&pps->queue);
spin_lock_init(&pps->lock);

--
1.7.1

2011-04-27 19:21:05

by Rodolfo Giometti

Subject: Re: [PATCH 1/2] pps: default echo function

On Wed, Apr 27, 2011 at 02:14:13PM -0400, James Nuss wrote:
> A default echo function has been provided so it is no longer an
> error when you specify PPS_ECHOASSERT or PPS_ECHOCLEAR without an explicit
> echo function. This allows some code re-use and also makes it easier
> to write client drivers since the default echo function does not
> normally need to change.
>
> Signed-off-by: James Nuss <[email protected]>
> Reviewed-by: Ben Gardiner <[email protected]>

Acked-by: Rodolfo Giometti <[email protected]>

--

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