diff options
author | Alexander Usyskin <alexander.usyskin@intel.com> | 2014-10-02 13:39:31 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-03 15:52:48 -0800 |
commit | 140c7553231dcd119ebda8c27dec7f06aef7e323 (patch) | |
tree | deebf68909102b7a828ca8b92cb354383c72004a /drivers/misc | |
parent | 0df1f2487d2f0d04703f142813d53615d62a1da4 (diff) | |
download | linux-stable-140c7553231dcd119ebda8c27dec7f06aef7e323.tar.gz linux-stable-140c7553231dcd119ebda8c27dec7f06aef7e323.tar.bz2 linux-stable-140c7553231dcd119ebda8c27dec7f06aef7e323.zip |
mei: drop unneeded client NULL check in cb structure
The pointer to client in the callback structure (cb->cl)
can't be NULL with current locking.
We can drop check and warnings as in some cases this just
uselessly complicates the code flow.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r-- | drivers/misc/mei/amthif.c | 24 | ||||
-rw-r--r-- | drivers/misc/mei/client.c | 2 | ||||
-rw-r--r-- | drivers/misc/mei/hbm.c | 5 | ||||
-rw-r--r-- | drivers/misc/mei/interrupt.c | 12 |
4 files changed, 11 insertions, 32 deletions
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c index 6cdce8477f57..0b5a3156917c 100644 --- a/drivers/misc/mei/amthif.c +++ b/drivers/misc/mei/amthif.c @@ -360,8 +360,7 @@ int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *cb) void mei_amthif_run_next_cmd(struct mei_device *dev) { struct mei_cl_cb *cb; - struct mei_cl_cb *next; - int status; + int ret; if (!dev) return; @@ -376,16 +375,14 @@ void mei_amthif_run_next_cmd(struct mei_device *dev) dev_dbg(dev->dev, "complete amthif cmd_list cb.\n"); - list_for_each_entry_safe(cb, next, &dev->amthif_cmd_list.list, list) { - list_del(&cb->list); - if (!cb->cl) - continue; - status = mei_amthif_send_cmd(dev, cb); - if (status) - dev_warn(dev->dev, "amthif write failed status = %d\n", - status); - break; - } + cb = list_first_entry_or_null(&dev->amthif_cmd_list.list, + typeof(*cb), list); + if (!cb) + return; + list_del(&cb->list); + ret = mei_amthif_send_cmd(dev, cb); + if (ret) + dev_warn(dev->dev, "amthif write failed status = %d\n", ret); } @@ -536,9 +533,6 @@ int mei_amthif_irq_read_msg(struct mei_device *dev, cb = dev->iamthif_current_cb; dev->iamthif_current_cb = NULL; - if (!cb->cl) - return -ENODEV; - dev->iamthif_stall_timer = 0; cb->buf_idx = dev->iamthif_msg_buf_index; cb->read_time = jiffies; diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index bc9ba5359bc6..1382d551d7ed 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -146,7 +146,7 @@ static void __mei_io_list_flush(struct mei_cl_cb *list, /* enable removing everything if no cl is specified */ list_for_each_entry_safe(cb, next, &list->list, list) { - if (!cl || (cb->cl && mei_cl_cmp_id(cl, cb->cl))) { + if (!cl || mei_cl_cmp_id(cl, cb->cl)) { list_del(&cb->list); if (free) mei_io_cb_free(cb); diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 49a2653d91a5..57c1bde9b2b8 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -637,11 +637,6 @@ static void mei_hbm_cl_res(struct mei_device *dev, list_for_each_entry_safe(cb, next, &dev->ctrl_rd_list.list, list) { cl = cb->cl; - /* this should not happen */ - if (WARN_ON(!cl)) { - list_del_init(&cb->list); - continue; - } if (cb->fop_type != fop_type) continue; diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 20c6c511f438..711cddfa9c99 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -44,8 +44,6 @@ void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *compl_list) list_for_each_entry_safe(cb, next, &compl_list->list, list) { cl = cb->cl; list_del(&cb->list); - if (!cl) - continue; dev_dbg(dev->dev, "completing call back.\n"); if (cl == &dev->iamthif_cl) @@ -105,7 +103,7 @@ static int mei_cl_irq_read_msg(struct mei_device *dev, list_for_each_entry_safe(cb, next, &dev->read_list.list, list) { cl = cb->cl; - if (!cl || !mei_cl_is_reading(cl, mei_hdr)) + if (!mei_cl_is_reading(cl, mei_hdr)) continue; cl->reading_state = MEI_READING; @@ -449,8 +447,6 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list) list = &dev->write_waiting_list; list_for_each_entry_safe(cb, next, &list->list, list) { cl = cb->cl; - if (cl == NULL) - continue; cl->status = 0; list_del(&cb->list); @@ -489,10 +485,6 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list) dev_dbg(dev->dev, "complete control write list cb.\n"); list_for_each_entry_safe(cb, next, &dev->ctrl_wr_list.list, list) { cl = cb->cl; - if (!cl) { - list_del(&cb->list); - return -ENODEV; - } switch (cb->fop_type) { case MEI_FOP_DISCONNECT: /* send disconnect message */ @@ -530,8 +522,6 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list) dev_dbg(dev->dev, "complete write list cb.\n"); list_for_each_entry_safe(cb, next, &dev->write_list.list, list) { cl = cb->cl; - if (cl == NULL) - continue; if (cl == &dev->iamthif_cl) ret = mei_amthif_irq_write(cl, cb, cmpl_list); else |