linux-kernel - [PATCH 2/2] ALSA: line6: stop using get

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Message-Id: <20180618154108.2227779-2-arnd@arndb.de>
Date:   Mon, 18 Jun 2018 17:41:01 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Arnd Bergmann <arnd@...db.de>
Cc:     y2038@...ts.linaro.org, Kees Cook <keescook@...omium.org>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] ALSA: line6: stop using get_seconds()

The get_seconds() function is deprecated because it truncates the
timestamp to 32 bits, so all users should change to ktime_get_seconds()
or ktime_get_real_seconds().

The firmware interface for passing the timestamp is also limited to
32 bits, so this patch only has the cosmetic effect of avoiding the
old interface.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 sound/usb/line6/toneport.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/usb/line6/toneport.c b/sound/usb/line6/toneport.c
index 750467fb95db..f47ba94e6f4a 100644
--- a/sound/usb/line6/toneport.c
+++ b/sound/usb/line6/toneport.c
@@ -367,12 +367,13 @@ static bool toneport_has_source_select(struct usb_line6_toneport *toneport)
 */
 static void toneport_setup(struct usb_line6_toneport *toneport)
 {
-	int ticks;
+	u32 ticks;
 	struct usb_line6 *line6 = &toneport->line6;
 	struct usb_device *usbdev = line6->usbdev;
 
 	/* sync time on device with host: */
-	ticks = (int)get_seconds();
+	/* note: 32-bit timestamps overflow in year 2106 */
+	ticks = (u32)ktime_get_real_seconds();
 	line6_write_data(line6, 0x80c6, &ticks, 4);
 
 	/* enable device: */
-- 
2.9.0