imx_mu_generic_tx() for the IMX_MU_TYPE_TXDB_V2 type polls on a register
which may timeout and is recognized as an error. This error is siltently
dropped and not dropped to the caller.
Forward the error to the caller.
Fixes: b5ef17917f3a7 ("mailbox: imx: fix TXDB_V2 channel race condition")
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
---
drivers/mailbox/imx-mailbox.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 246a9a9e39520..0028073be4a71 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -227,6 +227,7 @@ static int imx_mu_generic_tx(struct imx_mu_priv *priv,
u32 val;
int ret, count;
+ ret = 0;
switch (cp->type) {
case IMX_MU_TYPE_TX:
imx_mu_write(priv, *arg, priv->dcfg->xTR + cp->idx * 4);
@@ -259,7 +260,7 @@ static int imx_mu_generic_tx(struct imx_mu_priv *priv,
return -EINVAL;
}
- return 0;
+ return ret;
}
static int imx_mu_generic_rx(struct imx_mu_priv *priv,
--
2.53.0
