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libusbhost: Fix issue of multiple inotify event at same time.

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libusbhost can handle multiple inotify events at same time on Kit kat.
In original implementation, the function-level ret is assigned with
length of read and used for while loop.
if want to add a new watch for subdirectory,inotify_add_watch will
update the function-level ret with watch descriptor.
It impact on while loop to do exit.

Add local result to avoid it.

Change-Id: I101041ccfd54eaac14969a45e90ab2e49bdff578
Signed-off-by: Bo Huang <bo.b.huang@intel.com>
This commit is contained in:
Bo Huang 2014-01-21 14:25:22 +08:00
parent 0607e104c2
commit 3c1d7b34c1
1 changed files with 4 additions and 3 deletions
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7
libusbhost/usbhost.c
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@ -263,11 +263,12 @@ int usb_host_read_event(struct usb_host_context *context)
D("%s subdirectory %s: index: %d\n", (event->mask & IN_CREATE) ?
"new" : "gone", path, i);
if (i > 0 && i < MAX_USBFS_WD_COUNT) {
int local_ret = 0;
if (event->mask & IN_CREATE) {
ret = inotify_add_watch(context->fd, path,
local_ret = inotify_add_watch(context->fd, path,
IN_CREATE | IN_DELETE);
if (ret >= 0)
context->wds[i] = ret;
if (local_ret >= 0)
context->wds[i] = local_ret;
done = find_existing_devices_bus(path, context->cb_added,
context->data);
} else if (event->mask & IN_DELETE) {