| Message ID | 20240707082848.5424-3-wsa+renesas@sang-engineering.com |
|---|---|
| State | New |
| Headers | show |
| Series | i2c: rcar: avoid spurious irqs | expand |
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index ec73463ea9b5..d7688d702b65 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -553,7 +553,7 @@ static void rcar_i2c_irq_send(struct rcar_i2c_priv *priv, u32 msr) u32 irqs_to_clear = MDE; /* FIXME: sometimes, unknown interrupt happened. Do nothing */ - if (!(msr & MDE)) + if (WARN(!(msr & MDE), "spurious irq")) return; if (msr & MAT)
The FIXME is very old and probably needed because of some driver bug like insufficient initialization. It may well be that it was fixed meanwhile but we never know because the spurious irq is silently ignored. Add now a call trace when this happens so we have more information in case the issue still exists. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- Should go to for-next. Changes since v1: * new patch drivers/i2c/busses/i2c-rcar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)