At Tue, 28 Oct 2014 13:29:56 +0200, Aya Mahfouz wrote:
This patch is concerned with migrating the time variables in the pcxhr module found in the sound driver. The changes are concerend with the y2038 problem where timeval will overflow in the year 2038. ktime_t was used instead of timeval to get the wall time. The difference is displayed now in nanoseconds instead of microseconds.
Signed-off-by: Aya Mahfouz mahfouz.saif.elyazal@gmail.com Reviewed-by: Arnd Bergmann arnd@arndb.de
It gets compile errors like below. Please submit a patch at least after build testing.
thanks,
Takashi
===
sound/pci/pcxhr/pcxhr_core.c: In function ‘pcxhr_set_pipe_state’: sound/pci/pcxhr/pcxhr_core.c:913:10: error: ‘start’ redeclared as different kind of symbol ktime_t start, stop, diff; ^ sound/pci/pcxhr/pcxhr_core.c:907:27: note: previous definition of ‘start’ was here int capture_mask, int start) ^ In file included from include/linux/printk.h:260:0, from include/linux/kernel.h:13, from include/linux/delay.h:10, from sound/pci/pcxhr/pcxhr_core.c:23: sound/pci/pcxhr/pcxhr_core.c:923:13: error: used union type value where scalar is required start ? "START" : "STOP", audio_mask, state); ^ include/linux/dynamic_debug.h:87:9: note: in definition of macro ‘dynamic_dev_dbg’ ##__VA_ARGS__); \ ^ sound/pci/pcxhr/pcxhr_core.c:921:2: note: in expansion of macro ‘dev_dbg’ dev_dbg(&mgr->pci->dev, ^ sound/pci/pcxhr/pcxhr_core.c:924:6: error: used union type value where scalar is required if (start) { ^ sound/pci/pcxhr/pcxhr_core.c:950:38: error: used union type value where scalar is required if ((state & audio_mask) == (start ? audio_mask : 0)) ^ sound/pci/pcxhr/pcxhr_core.c:958:6: error: wrong type argument to unary exclamation mark if (!start) { ^ scripts/Makefile.build:257: recipe for target 'sound/pci/pcxhr/pcxhr_core.o' failed
sound/pci/pcxhr/pcxhr.c | 10 ++++++---- sound/pci/pcxhr/pcxhr_core.c | 10 ++++++---- 2 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/sound/pci/pcxhr/pcxhr.c b/sound/pci/pcxhr/pcxhr.c index b854fc5..3f4607c 100644 --- a/sound/pci/pcxhr/pcxhr.c +++ b/sound/pci/pcxhr/pcxhr.c @@ -711,8 +711,9 @@ static void pcxhr_start_linked_stream(struct pcxhr_mgr *mgr) int playback_mask = 0;
#ifdef CONFIG_SND_DEBUG_VERBOSE
- struct timeval my_tv1, my_tv2;
- do_gettimeofday(&my_tv1);
- ktime_t start, stop, diff;
- start = ktime_get();
#endif mutex_lock(&mgr->setup_mutex);
@@ -823,9 +824,10 @@ static void pcxhr_start_linked_stream(struct pcxhr_mgr *mgr) mutex_unlock(&mgr->setup_mutex);
#ifdef CONFIG_SND_DEBUG_VERBOSE
- do_gettimeofday(&my_tv2);
- stop = ktime_get();
- diff = ktime_sub(stop, start); dev_dbg(&mgr->pci->dev, "***TRIGGER START*** TIME = %ld (err = %x)\n",
(long)(my_tv2.tv_usec - my_tv1.tv_usec), err);
(long)(ktime_to_ns(diff)), err);#endif }
diff --git a/sound/pci/pcxhr/pcxhr_core.c b/sound/pci/pcxhr/pcxhr_core.c index a584acb..be3c003 100644 --- a/sound/pci/pcxhr/pcxhr_core.c +++ b/sound/pci/pcxhr/pcxhr_core.c @@ -910,8 +910,9 @@ int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask, int audio_mask;
#ifdef CONFIG_SND_DEBUG_VERBOSE
- struct timeval my_tv1, my_tv2;
- do_gettimeofday(&my_tv1);
- ktime_t start, stop, diff;
- start = ktime_get();
#endif audio_mask = (playback_mask | (capture_mask << PCXHR_PIPE_STATE_CAPTURE_OFFSET)); @@ -960,9 +961,10 @@ int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask, return err; } #ifdef CONFIG_SND_DEBUG_VERBOSE
- do_gettimeofday(&my_tv2);
- stop = ktime_get();
- diff = ktime_sub(stop, start); dev_dbg(&mgr->pci->dev, "***SET PIPE STATE*** TIME = %ld (err = %x)\n",
(long)(my_tv2.tv_usec - my_tv1.tv_usec), err);
(long)(ktime_to_ns(diff)), err);#endif return 0; } -- 1.9.3