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mei: use structured buffer for the write buffer

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We can drop useless castings and use proper types.
We remove the casting in mei_hbm_hdr function
and add new function mei_hbm_stop_request_prepare that
utilize the new structure

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler
2012-12-25 19:06:10 +02:00
committed by Greg Kroah-Hartman
parent cd51ed649f
commit e46f187487
5 changed files with 109 additions and 106 deletions
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25
drivers/misc/mei/interrupt.c
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@@ -469,25 +469,24 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list)
{
struct mei_msg_hdr *mei_hdr;
struct mei_msg_hdr mei_hdr;
struct mei_cl *cl = cb->cl;
size_t len = cb->request_buffer.size - cb->buf_idx;
size_t msg_slots = mei_data2slots(len);
mei_hdr = (struct mei_msg_hdr *)&dev->wr_msg_buf[0];
mei_hdr->host_addr = cl->host_client_id;
mei_hdr->me_addr = cl->me_client_id;
mei_hdr->reserved = 0;
mei_hdr.host_addr = cl->host_client_id;
mei_hdr.me_addr = cl->me_client_id;
mei_hdr.reserved = 0;
if (*slots >= msg_slots) {
mei_hdr->length = len;
mei_hdr->msg_complete = 1;
mei_hdr.length = len;
mei_hdr.msg_complete = 1;
/* Split the message only if we can write the whole host buffer */
} else if (*slots == dev->hbuf_depth) {
msg_slots = *slots;
len = (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
mei_hdr->length = len;
mei_hdr->msg_complete = 0;
mei_hdr.length = len;
mei_hdr.msg_complete = 0;
} else {
/* wait for next time the host buffer is empty */
return 0;
@@ -495,10 +494,10 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
dev_dbg(&dev->pdev->dev, "buf: size = %d idx = %lu\n",
cb->request_buffer.size, cb->buf_idx);
dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(&mei_hdr));
*slots -= msg_slots;
if (mei_write_message(dev, mei_hdr,
if (mei_write_message(dev, &mei_hdr,
cb->request_buffer.data + cb->buf_idx)) {
cl->status = -ENODEV;
list_move_tail(&cb->list, &cmpl_list->list);
@@ -509,8 +508,8 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
return -ENODEV;
cl->status = 0;
cb->buf_idx += mei_hdr->length;
if (mei_hdr->msg_complete)
cb->buf_idx += mei_hdr.length;
if (mei_hdr.msg_complete)
list_move_tail(&cb->list, &dev->write_waiting_list.list);
return 0;