Instead of requiring per-driver support to handle the message queue with
realtime priority, add handling for a linux,use-rt-queue DT flag to the
generic SPI controller initialization.
Signed-off-by: Matthias Schiffer <[email protected]>
---
drivers/spi/spi.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 9291b2a0e8871..f069f1aef5378 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3185,6 +3185,11 @@ int spi_register_controller(struct spi_controller *ctlr)
ctlr->mode_bits |= SPI_CS_HIGH;
}
+ /* Run message pump with realtime priority */
+ if (ctlr->dev.of_node &&
+ of_property_read_bool(ctlr->dev.of_node, "linux,use-rt-queue"))
+ ctlr->rt = true;
+
/*
* Even if it's just one always-selected device, there must
* be at least one chipselect.
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