fbdev: pxa3xx: use ktime_get_ts64 for time stamps

Web:        https://git.kernel.org/torvalds/c/f7a753547474eb6bcc1fe8dd46d14eaea93bfe2e
Commit:     f7a753547474eb6bcc1fe8dd46d14eaea93bfe2e
Parent:     63a4be93937c1a6459f9d67b7afeb4e81fa64d2b
Refname:    refs/heads/master
Author:     Arnd Bergmann <[email protected]>
AuthorDate: Thu Jan 4 16:53:49 2018 +0100
Committer:  Bartlomiej Zolnierkiewicz <[email protected]>
CommitDate: Thu Jan 4 16:53:49 2018 +0100

    fbdev: pxa3xx: use ktime_get_ts64 for time stamps
    
    do_gettimeofday() is deprecated because it is not y2038 safe, so I'm
    changing the calculation for the diagnostic output over to using
    'timespec64'.
    
    We really only print time deltas here, so changing it to monotonic
    time makes this more robust, the correct accessor for this is
    ktime_get_ts64().
    
    Signed-off-by: Arnd Bergmann <[email protected]>
    Cc: "Gustavo A. R. Silva" <[email protected]>
    Cc: Himanshu Jha <[email protected]>
    Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
---
 drivers/video/fbdev/pxa3xx-gcu.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/video/fbdev/pxa3xx-gcu.c b/drivers/video/fbdev/pxa3xx-gcu.c
index 55fbb432c053..0955622a1227 100644
--- a/drivers/video/fbdev/pxa3xx-gcu.c
+++ b/drivers/video/fbdev/pxa3xx-gcu.c
@@ -104,7 +104,7 @@ struct pxa3xx_gcu_priv {
 	wait_queue_head_t	  wait_idle;
 	wait_queue_head_t	  wait_free;
 	spinlock_t		  spinlock;
-	struct timeval 		  base_time;
+	struct timespec64	  base_time;
 
 	struct pxa3xx_gcu_batch *free;
 	struct pxa3xx_gcu_batch *ready;
@@ -126,18 +126,20 @@ gc_writel(struct pxa3xx_gcu_priv *priv, unsigned int off, unsigned long val)
 
 #define QPRINT(priv, level, msg)					\
 	do {								\
-		struct timeval tv;					\
+		struct timespec64 ts;					\
 		struct pxa3xx_gcu_shared *shared = priv->shared;	\
 		u32 base = gc_readl(priv, REG_GCRBBR);			\
 									\
-		do_gettimeofday(&tv);					\
+		ktime_get_ts64(&ts);					\
+		ts = timespec64_sub(ts, priv->base_time);		\
 									\
-		printk(level "%ld.%03ld.%03ld - %-17s: %-21s (%s, "	\
+		printk(level "%lld.%03ld.%03ld - %-17s: %-21s (%s, "	\
 			"STATUS "					\
 			"0x%02lx, B 0x%08lx [%ld], E %5ld, H %5ld, "	\
 			"T %5ld)\n",					\
-			tv.tv_sec - priv->base_time.tv_sec,		\
-			tv.tv_usec / 1000, tv.tv_usec % 1000,		\
+			(s64)(ts.tv_sec),				\
+			ts.tv_nsec / NSEC_PER_MSEC,			\
+			(ts.tv_nsec % NSEC_PER_MSEC) / USEC_PER_MSEC,	\
 			__func__, msg,					\
 			shared->hw_running ? "running" : "   idle",	\
 			gc_readl(priv, REG_GCISCR),			\
@@ -164,7 +166,7 @@ pxa3xx_gcu_reset(struct pxa3xx_gcu_priv *priv)
 	priv->shared->buffer_phys = priv->shared_phys;
 	priv->shared->magic = PXA3XX_GCU_SHARED_MAGIC;
 
-	do_gettimeofday(&priv->base_time);
+	ktime_get_ts64(&priv->base_time);
 
 	/* set up the ring buffer pointers */
 	gc_writel(priv, REG_GCRBLR, 0);
--
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