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[4/5] clocksource/acpi: Add probing infrastructure for ACPI-based clocksources

Message ID 1441386412-8139-5-git-send-email-marc.zyngier@arm.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Marc Zyngier Sept. 4, 2015, 5:06 p.m. UTC
DT enjoys a rather nice probing infrastructure for clocksources,
while ACPI is so far stuck into a very distant past.

This patch introduces a declarative API, allowing clocksources
to be self-contained and be called when parsing the GTDT table.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
 drivers/clocksource/clksrc-of.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c
index 0093a8e..b351b1e 100644
--- a/drivers/clocksource/clksrc-of.c
+++ b/drivers/clocksource/clksrc-of.c
@@ -14,6 +14,7 @@ 
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/of.h>
 #include <linux/clocksource.h>
@@ -38,6 +39,9 @@  void __init clocksource_of_init(void)
 		init_func(np);
 		clocksources++;
 	}
+
+	clocksources += acpi_probe_device_table(ACPI_SIG_GTDT);
+
 	if (!clocksources)
 		pr_crit("%s: no matching clocksources found\n", __func__);
 }