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| author | Alexander Gordeev <lasaine@lvk.cs.msu.su> | 2011-01-13 01:00:51 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 16:03:19 (GMT) |
| commit | 5e196d34a776420278e4117b4742cd9d3f2350ed (patch) | |
| tree | 86187af6a600876506261758a00c7c42e6037283 /drivers/pps/clients/pps-ktimer.c | |
| parent | 6f4229b51106cbc859e9d8209b22c8a2ec749e64 (diff) | |
| download | linux-5e196d34a776420278e4117b4742cd9d3f2350ed.tar.xz | |
pps: access pps device by direct pointer
Using device index as a pointer needs some unnecessary work to be done
every time the pointer is needed (in irq handler for example). Using a
direct pointer is much more easy (and safe as well).
Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/pps/clients/pps-ktimer.c')
| -rw-r--r-- | drivers/pps/clients/pps-ktimer.c | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/drivers/pps/clients/pps-ktimer.c b/drivers/pps/clients/pps-ktimer.c index e1bdd8b..966ead1 100644 --- a/drivers/pps/clients/pps-ktimer.c +++ b/drivers/pps/clients/pps-ktimer.c @@ -31,7 +31,7 @@ * Global variables */ -static int source; +static struct pps_device *pps; static struct timer_list ktimer; /* @@ -47,7 +47,7 @@ static void pps_ktimer_event(unsigned long ptr) pr_info("PPS event at %lu\n", jiffies); - pps_event(source, &ts, PPS_CAPTUREASSERT, NULL); + pps_event(pps, &ts, PPS_CAPTUREASSERT, NULL); mod_timer(&ktimer, jiffies + HZ); } @@ -56,12 +56,11 @@ static void pps_ktimer_event(unsigned long ptr) * The echo function */ -static void pps_ktimer_echo(int source, int event, void *data) +static void pps_ktimer_echo(struct pps_device *pps, int event, void *data) { - pr_info("echo %s %s for source %d\n", + dev_info(pps->dev, "echo %s %s\n", event & PPS_CAPTUREASSERT ? "assert" : "", - event & PPS_CAPTURECLEAR ? "clear" : "", - source); + event & PPS_CAPTURECLEAR ? "clear" : ""); } /* @@ -84,30 +83,27 @@ static struct pps_source_info pps_ktimer_info = { static void __exit pps_ktimer_exit(void) { - del_timer_sync(&ktimer); - pps_unregister_source(source); + dev_info(pps->dev, "ktimer PPS source unregistered\n"); - pr_info("ktimer PPS source unregistered\n"); + del_timer_sync(&ktimer); + pps_unregister_source(pps); } static int __init pps_ktimer_init(void) { - int ret; - - ret = pps_register_source(&pps_ktimer_info, + pps = pps_register_source(&pps_ktimer_info, PPS_CAPTUREASSERT | PPS_OFFSETASSERT); - if (ret < 0) { + if (pps == NULL) { printk(KERN_ERR "cannot register ktimer source\n"); - return ret; + return -ENOMEM; } - source = ret; setup_timer(&ktimer, pps_ktimer_event, 0); mod_timer(&ktimer, jiffies + HZ); - pr_info("ktimer PPS source registered at %d\n", source); + dev_info(pps->dev, "ktimer PPS source registered\n"); - return 0; + return 0; } module_init(pps_ktimer_init); |