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HSM-267-2: mailbox: imx: Send failure to read to client 

In case the reception of the message fails, the client is not
informed.

This patch sends the error to client using mbox_chan_received_data
with error code encoded in the address of the message.

Signed-off-by: Franck LENORMAND <franck.lenormand@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Franck LENORMAND 2020-03-25 16:47:18 +01:00
parent 5258913894
commit 1edd6bc2e9
1 changed files with 11 additions and 4 deletions
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15
drivers/mailbox/imx-mailbox.c
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@ -279,7 +279,7 @@ static int imx_mu_seco_rxdb(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp
struct imx_sc_rpc_msg_max msg;
u32 *data = (u32 *)&msg;
u32 byte_size;
int err;
int err = 0;
int i;
dev_dbg(priv->dev, "Receiving message\n");
@ -291,7 +291,8 @@ static int imx_mu_seco_rxdb(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp
if (byte_size > sizeof(msg)) {
dev_err(priv->dev, "Exceed max msg size (%li) on RX, got: %i\n",
sizeof(msg), byte_size);
return -EINVAL;
err = -EINVAL;
goto error;
}
/* Read message waiting they are written */
@ -300,7 +301,7 @@ static int imx_mu_seco_rxdb(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp
err = imx_mu_rx_waiting_read(priv, i, data++);
if (err) {
dev_err(priv->dev, "Timeout rx %d\n", i);
return err;
goto error;
}
}
@ -314,7 +315,13 @@ static int imx_mu_seco_rxdb(struct imx_mu_priv *priv, struct imx_mu_con_priv *cp
dev_dbg(priv->dev, "Sending message to client\n");
mbox_chan_received_data(cp->chan, (void *)&msg);
return 0;
goto exit;
error:
mbox_chan_received_data(cp->chan, ERR_PTR(err));
exit:
return err;
}
static void imx_mu_txdb_tasklet(unsigned long data)