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

From: Marc Zyngier
Date: Fri Sep 04 2015 - 13:07:54 EST


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@xxxxxxx>
---
drivers/clocksource/clksrc-of.c | 4 ++++
1 file changed, 4 insertions(+)

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__);
}
--
2.1.4

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