[PATCH RFCv2 5/5] ARM: mvebu: add debugging message indicating the status of I/O coherency
From: Thomas Petazzoni <hidden>
Date: 2014-05-20 15:35:05
Subsystem:
arm port, arm/marvell kirkwood and armada 370, 375, 38x, 39x, xp, 3700, 7k/8k, cn9130 soc support, the rest · Maintainers:
Russell King, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Linus Torvalds
Since the requirements for I/O coherency to work may not be trivial, it's useful to have a debugging message that indicates whether the hardware I/O coherency is enabled or not. Signed-off-by: Thomas Petazzoni <redacted> --- arch/arm/mach-mvebu/coherency.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c
index 2a204d0..6fad623 100644
--- a/arch/arm/mach-mvebu/coherency.c
+++ b/arch/arm/mach-mvebu/coherency.c@@ -363,6 +363,11 @@ int __init coherency_init(void) type == COHERENCY_FABRIC_TYPE_ARMADA_380) armada_375_380_coherency_init(np); + if (type != COHERENCY_FABRIC_TYPE_NONE) + pr_info("hardware I/O coherency enabled\n"); + else + pr_info("hardware I/O coherency disabled\n"); + return 0; }
--
1.9.3