Ensure that the following values are little-endian:
- header->pad (which is used for cport_id)
- header->size
Fixes: ec558bbfea67 ("greybus: Add BeaglePlay Linux Driver")
Reported-by: kernel test robot <yujie.liu@xxxxxxxxx>
Closes: https://lore.kernel.org/r/202311072329.Xogj7hGW-lkp@xxxxxxxxx/
Signed-off-by: Ayush Singh <ayushdevel1325@xxxxxxxxx>
---
V3:
- Fix endiness while sending.
V2: https://lists.linaro.org/archives/list/greybus-dev@xxxxxxxxxxxxxxxx/thread/L53UN5ROSG4M6OE7CU5Y3L5F44T6ZPCC/
- Ensure endianess for header->pad
V1: https://lists.linaro.org/archives/list/greybus-dev@xxxxxxxxxxxxxxxx/message/K7UJ6PEAWBLNDMHLT2IO6OP5LQISHRUO/
drivers/greybus/gb-beagleplay.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/greybus/gb-beagleplay.c b/drivers/greybus/gb-beagleplay.c
index 43318c1993ba..8b21c3e1e612 100644
--- a/drivers/greybus/gb-beagleplay.c
+++ b/drivers/greybus/gb-beagleplay.c
@@ -93,9 +93,9 @@ static void hdlc_rx_greybus_frame(struct gb_beagleplay *bg, u8 *buf, u16 len)
memcpy(&cport_id, hdr->pad, sizeof(cport_id));
dev_dbg(&bg->sd->dev, "Greybus Operation %u type %X cport %u status %u received",
- hdr->operation_id, hdr->type, cport_id, hdr->result);
+ hdr->operation_id, hdr->type, le16_to_cpu(cport_id), hdr->result);
- greybus_data_rcvd(bg->gb_hd, cport_id, buf, len);
+ greybus_data_rcvd(bg->gb_hd, le16_to_cpu(cport_id), buf, len);
}
static void hdlc_rx_dbg_frame(const struct gb_beagleplay *bg, const char *buf, u16 len)
@@ -340,14 +340,15 @@ static int gb_message_send(struct gb_host_device *hd, u16 cport, struct gb_messa
{
struct gb_beagleplay *bg = dev_get_drvdata(&hd->dev);
struct hdlc_payload payloads[2];
+ __le16 cport_id = cpu_to_le16(cport);
dev_dbg(&hd->dev, "Sending greybus message with Operation %u, Type: %X on Cport %u",
msg->header->operation_id, msg->header->type, cport);
- if (msg->header->size > RX_HDLC_PAYLOAD)
+ if (le16_to_cpu(msg->header->size) > RX_HDLC_PAYLOAD)
return dev_err_probe(&hd->dev, -E2BIG, "Greybus message too big");
- memcpy(msg->header->pad, &cport, sizeof(cport));
+ memcpy(msg->header->pad, &cport_id, sizeof(cport_id));
payloads[0].buf = msg->header;
payloads[0].len = sizeof(*msg->header);
--
2.43.0
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