diff mbox series

[v1] pps: Increase PPS_MAX_SOURCES value.

Message ID 20230612190900.2334464-1-charlie.johnston@ni.com
State New
Headers
Series [v1] pps: Increase PPS_MAX_SOURCES value. |

Commit Message

Charlie Johnston June 12, 2023, 7:08 p.m. UTC 
  For consistency with what others use for minors, this
change sets PPS_MAX_SOURCES to MINORMASK.

The PPS_MAX_SOURCES value is currently set to 16. In
some cases this was not sufficient for a system. For
example, a system with multiple (4+) PCIe cards each
with 4 PTP-capable ethernet interfaces could run out
of the available PPS major:minors if each interface
registers a PPS source.

Signed-off-by: Charlie Johnston <charlie.johnston@ni.com>
---
 include/uapi/linux/pps.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/uapi/linux/pps.h b/include/uapi/linux/pps.h
index 009ebcd8ced5..0712c2e5a472 100644
--- a/include/uapi/linux/pps.h
+++ b/include/uapi/linux/pps.h
@@ -25,8 +25,8 @@ 
 
 #include <linux/types.h>
 
-#define PPS_VERSION		"5.3.6"
-#define PPS_MAX_SOURCES		16		/* should be enough... */
+#define PPS_VERSION			"5.3.6"
+#define PPS_MAX_SOURCES		MINORMASK
 
 /* Implementation note: the logical states ``assert'' and ``clear''
  * are implemented in terms of the chip register, i.e. ``assert''