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Merge tag 'usb-for-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

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Felipe writes:

usb: changes for v4.7 merge window

Here's the big USB Gadget pull request. This time
not as large as usual with only 57 non-merge
commits.

The most important part here is, again, all the work
on dwc3. This time around we're treating all
endpoints (except for control endpoint) exactly the
same. They all have the same amount of TRBs on the
ring, they all treat the ring as an actual ring with
a link TRB pointing to the head, etc.

We're also helping the host side burst (on
SuperSpeed GEN1 or GEN2 at least) for as long as
possible until the endpoint returns NRDY.

Other than this big TRB ring rework on dwc3, we also
have a dwc3-omap DMA initialization fix, some extra
debugfs files to aid in some odd debug sessions and
a complete removal of our FIFO resizing logic.

We have a new quirk for some dwc3 P3 quirk in some
implementations.

The rest is basically non-critical fixes and the
usual cleanups.
This commit is contained in:
Greg Kroah-Hartman
2016-04-28 09:32:39 -07:00
parent 328fafb94f 2a58f9c12b
commit ce15bda101
39 changed files with 828 additions and 617 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/usb/gadget/function/f_fs.c
View File

@@ -651,7 +651,7 @@ static void ffs_user_copy_worker(struct work_struct *work)
if (io_data->read && ret > 0) {
use_mm(io_data->mm);
ret = copy_to_iter(io_data->buf, ret, &io_data->data);
if (iov_iter_count(&io_data->data))
if (ret != io_data->req->actual && iov_iter_count(&io_data->data))
ret = -EFAULT;
unuse_mm(io_data->mm);
}

36
drivers/usb/gadget/function/f_mass_storage.c
View File

@@ -2977,25 +2977,6 @@ void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn,
}
EXPORT_SYMBOL_GPL(fsg_common_set_inquiry_string);
int fsg_common_run_thread(struct fsg_common *common)
{
common->state = FSG_STATE_IDLE;
/* Tell the thread to start working */
common->thread_task =
kthread_create(fsg_main_thread, common, "file-storage");
if (IS_ERR(common->thread_task)) {
common->state = FSG_STATE_TERMINATED;
return PTR_ERR(common->thread_task);
}
DBG(common, "I/O thread pid: %d\n", task_pid_nr(common->thread_task));
wake_up_process(common->thread_task);
return 0;
}
EXPORT_SYMBOL_GPL(fsg_common_run_thread);
static void fsg_common_release(struct kref *ref)
{
struct fsg_common *common = container_of(ref, struct fsg_common, ref);
@@ -3005,6 +2986,7 @@ static void fsg_common_release(struct kref *ref)
if (common->state != FSG_STATE_TERMINATED) {
raise_exception(common, FSG_STATE_EXIT);
wait_for_completion(&common->thread_notifier);
common->thread_task = NULL;
}
for (i = 0; i < ARRAY_SIZE(common->luns); ++i) {
@@ -3050,9 +3032,21 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
if (ret)
return ret;
fsg_common_set_inquiry_string(fsg->common, NULL, NULL);
ret = fsg_common_run_thread(fsg->common);
if (ret)
}
if (!common->thread_task) {
common->state = FSG_STATE_IDLE;
common->thread_task =
kthread_create(fsg_main_thread, common, "file-storage");
if (IS_ERR(common->thread_task)) {
int ret = PTR_ERR(common->thread_task);
common->thread_task = NULL;
common->state = FSG_STATE_TERMINATED;
return ret;
}
DBG(common, "I/O thread pid: %d\n",
task_pid_nr(common->thread_task));
wake_up_process(common->thread_task);
}
fsg->gadget = gadget;

2
drivers/usb/gadget/function/f_mass_storage.h
View File

@@ -153,8 +153,6 @@ int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg);
void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn,
const char *pn);
int fsg_common_run_thread(struct fsg_common *common);
void fsg_config_from_params(struct fsg_config *cfg,
const struct fsg_module_parameters *params,
unsigned int fsg_num_buffers);