diff options
| -rw-r--r-- | drivers/misc/mei/client.c | 4 | ||||
| -rw-r--r-- | drivers/misc/mei/hw.h | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 1e3edbbacb1e..204d807e755b 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -1585,7 +1585,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, goto err; } - hbuf_len = mei_slots2data(hbuf_slots); + hbuf_len = mei_slots2data(hbuf_slots) & MEI_MSG_MAX_LEN_MASK; dr_slots = mei_dma_ring_empty_slots(dev); dr_len = mei_slots2data(dr_slots); @@ -1718,7 +1718,7 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) goto out; } - hbuf_len = mei_slots2data(hbuf_slots); + hbuf_len = mei_slots2data(hbuf_slots) & MEI_MSG_MAX_LEN_MASK; dr_slots = mei_dma_ring_empty_slots(dev); dr_len = mei_slots2data(dr_slots); diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index d025a5f8317e..8231b6941adf 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -209,6 +209,9 @@ struct mei_msg_hdr { u32 extension[0]; } __packed; +/* The length is up to 9 bits */ +#define MEI_MSG_MAX_LEN_MASK GENMASK(9, 0) + #define MEI_MSG_HDR_MAX 2 struct mei_bus_message { |