diff options
Diffstat (limited to 'drivers/misc/mei/interrupt.c')
| -rw-r--r-- | drivers/misc/mei/interrupt.c | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 89f2fbce160f..466c1d22fb16 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -82,6 +82,24 @@ static bool mei_cl_is_reading(struct mei_cl *cl) } /** + * mei_irq_discard_msg - discard received message + * + * @dev: mei device + * @hdr: message header + */ +static inline +void mei_irq_discard_msg(struct mei_device *dev, struct mei_msg_hdr *hdr) +{ + /* + * no need to check for size as it is guarantied + * that length fits into rd_msg_buf + */ + mei_read_slots(dev, dev->rd_msg_buf, hdr->length); + dev_dbg(dev->dev, "discarding message " MEI_HDR_FMT "\n", + MEI_HDR_PRM(hdr)); +} + +/** * mei_cl_irq_read_msg - process client message * * @cl: reading client @@ -90,9 +108,9 @@ static bool mei_cl_is_reading(struct mei_cl *cl) * * Return: always 0 */ -static int mei_cl_irq_read_msg(struct mei_cl *cl, - struct mei_msg_hdr *mei_hdr, - struct mei_cl_cb *complete_list) +int mei_cl_irq_read_msg(struct mei_cl *cl, + struct mei_msg_hdr *mei_hdr, + struct mei_cl_cb *complete_list) { struct mei_device *dev = cl->dev; struct mei_cl_cb *cb; @@ -144,20 +162,17 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, mei_read_slots(dev, buffer, mei_hdr->length); cb->buf_idx += mei_hdr->length; + if (mei_hdr->msg_complete) { + cb->read_time = jiffies; cl_dbg(dev, cl, "completed read length = %lu\n", cb->buf_idx); list_move_tail(&cb->list, &complete_list->list); } out: - if (!buffer) { - /* assume that mei_hdr->length <= MEI_RD_MSG_BUF_SIZE */ - BUG_ON(mei_hdr->length > MEI_RD_MSG_BUF_SIZE); - mei_read_slots(dev, dev->rd_msg_buf, mei_hdr->length); - dev_dbg(dev->dev, "discarding message " MEI_HDR_FMT "\n", - MEI_HDR_PRM(mei_hdr)); - } + if (!buffer) + mei_irq_discard_msg(dev, mei_hdr); return 0; } @@ -569,8 +584,6 @@ void mei_timer(struct work_struct *work) if (--dev->iamthif_stall_timer == 0) { dev_err(dev->dev, "timer: amthif hanged.\n"); mei_reset(dev); - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; dev->iamthif_canceled = false; dev->iamthif_state = MEI_IAMTHIF_IDLE; dev->iamthif_timer = 0; |