diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/misc/mei/interrupt.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/misc/mei/interrupt.c')
-rw-r--r-- | kernel/drivers/misc/mei/interrupt.c | 126 |
1 files changed, 35 insertions, 91 deletions
diff --git a/kernel/drivers/misc/mei/interrupt.c b/kernel/drivers/misc/mei/interrupt.c index 3f84d2edc..64b568a02 100644 --- a/kernel/drivers/misc/mei/interrupt.c +++ b/kernel/drivers/misc/mei/interrupt.c @@ -21,6 +21,7 @@ #include <linux/fs.h> #include <linux/jiffies.h> #include <linux/slab.h> +#include <linux/pm_runtime.h> #include <linux/mei.h> @@ -65,8 +66,8 @@ EXPORT_SYMBOL_GPL(mei_irq_compl_handler); static inline int mei_cl_hbm_equal(struct mei_cl *cl, struct mei_msg_hdr *mei_hdr) { - return cl->host_client_id == mei_hdr->host_addr && - cl->me_client_id == mei_hdr->me_addr; + return mei_cl_host_addr(cl) == mei_hdr->host_addr && + mei_cl_me_id(cl) == mei_hdr->me_addr; } /** @@ -147,6 +148,9 @@ int mei_cl_irq_read_msg(struct mei_cl *cl, cb->read_time = jiffies; cl_dbg(dev, cl, "completed read length = %lu\n", cb->buf_idx); list_move_tail(&cb->list, &complete_list->list); + } else { + pm_runtime_mark_last_busy(dev->dev); + pm_request_autosuspend(dev->dev); } out: @@ -180,56 +184,14 @@ static int mei_cl_irq_disconnect_rsp(struct mei_cl *cl, struct mei_cl_cb *cb, return -EMSGSIZE; ret = mei_hbm_cl_disconnect_rsp(dev, cl); - - cl->state = MEI_FILE_DISCONNECTED; - cl->status = 0; + mei_cl_set_disconnected(cl); mei_io_cb_free(cb); + mei_me_cl_put(cl->me_cl); + cl->me_cl = NULL; return ret; } - - -/** - * mei_cl_irq_disconnect - processes close related operation from - * interrupt thread context - send disconnect request - * - * @cl: client - * @cb: callback block. - * @cmpl_list: complete list. - * - * Return: 0, OK; otherwise, error. - */ -static int mei_cl_irq_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb, - struct mei_cl_cb *cmpl_list) -{ - struct mei_device *dev = cl->dev; - u32 msg_slots; - int slots; - - msg_slots = mei_data2slots(sizeof(struct hbm_client_connect_request)); - slots = mei_hbuf_empty_slots(dev); - - if (slots < msg_slots) - return -EMSGSIZE; - - if (mei_hbm_cl_disconnect_req(dev, cl)) { - cl->status = 0; - cb->buf_idx = 0; - list_move_tail(&cb->list, &cmpl_list->list); - return -EIO; - } - - cl->state = MEI_FILE_DISCONNECTING; - cl->status = 0; - cb->buf_idx = 0; - list_move_tail(&cb->list, &dev->ctrl_rd_list.list); - cl->timer_count = MEI_CONNECT_TIMEOUT; - - return 0; -} - - /** * mei_cl_irq_read - processes client read related operation from the * interrupt thread context - request for flow control credits @@ -267,49 +229,6 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb, return 0; } - -/** - * mei_cl_irq_connect - send connect request in irq_thread context - * - * @cl: client - * @cb: callback block. - * @cmpl_list: complete list. - * - * Return: 0, OK; otherwise, error. - */ -static int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb, - struct mei_cl_cb *cmpl_list) -{ - struct mei_device *dev = cl->dev; - u32 msg_slots; - int slots; - int ret; - - msg_slots = mei_data2slots(sizeof(struct hbm_client_connect_request)); - slots = mei_hbuf_empty_slots(dev); - - if (mei_cl_is_other_connecting(cl)) - return 0; - - if (slots < msg_slots) - return -EMSGSIZE; - - cl->state = MEI_FILE_CONNECTING; - - ret = mei_hbm_cl_connect_req(dev, cl); - if (ret) { - cl->status = ret; - cb->buf_idx = 0; - list_del_init(&cb->list); - return ret; - } - - list_move_tail(&cb->list, &dev->ctrl_rd_list.list); - cl->timer_count = MEI_CONNECT_TIMEOUT; - return 0; -} - - /** * mei_irq_read_handler - bottom half read routine after ISR to * handle the read processing. @@ -488,6 +407,13 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list) if (ret) return ret; break; + + case MEI_FOP_NOTIFY_START: + case MEI_FOP_NOTIFY_STOP: + ret = mei_cl_irq_notify(cl, cb, cmpl_list); + if (ret) + return ret; + break; default: BUG(); } @@ -509,6 +435,24 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list) EXPORT_SYMBOL_GPL(mei_irq_write_handler); +/** + * mei_connect_timeout - connect/disconnect timeouts + * + * @cl: host client + */ +static void mei_connect_timeout(struct mei_cl *cl) +{ + struct mei_device *dev = cl->dev; + + if (cl->state == MEI_FILE_CONNECTING) { + if (dev->hbm_f_dot_supported) { + cl->state = MEI_FILE_DISCONNECT_REQUIRED; + wake_up(&cl->wait); + return; + } + } + mei_reset(dev); +} /** * mei_timer - timer function. @@ -549,7 +493,7 @@ void mei_timer(struct work_struct *work) if (cl->timer_count) { if (--cl->timer_count == 0) { dev_err(dev->dev, "timer: connect/disconnect timeout.\n"); - mei_reset(dev); + mei_connect_timeout(cl); goto out; } } |