Upgrade to 4.4.50-rt62

The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it
to 4.4.50-rt62.
The command to achieve it is:
a) Clone a git repo from
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

b) Get the diff between this two changesets:
git diff 640eca2901f3435e616157b11379d3223a44b391
705619beeea1b0b48219a683fd1a901a86fdaf5e

where the two commits are:
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
640eca2901f3435e616157b11379d3223a44b391
640eca2901f3 v4.4.6-rt14
localversion-rt
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
705619beeea1b0b48219a683fd1a901a86fdaf5e
705619beeea1 Linux 4.4.50-rt62
localversion-rt

c) One patch has been backported thus revert the patch before applying.

 filterdiff -p1 -x scripts/package/Makefile
~/tmp/v4.4.6-rt14-4.4.50-rt62.diff  |patch -p1 --dry-run

Upstream status: backport

Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/kernel/drivers/usb/gadget/function/f_uac2.c b/kernel/drivers/usb/gadget/function/f_uac2.c
index 044ca79d3..12064d3bd 100644
--- a/kernel/drivers/usb/gadget/function/f_uac2.c
+++ b/kernel/drivers/usb/gadget/function/f_uac2.c
@@ -1079,13 +1079,13 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
 	agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc);
 	if (!agdev->out_ep) {
 		dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
-		goto err;
+		return ret;
 	}
 
 	agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc);
 	if (!agdev->in_ep) {
 		dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
-		goto err;
+		return ret;
 	}
 
 	uac2->p_prm.uac2 = uac2;
@@ -1102,7 +1102,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
 
 	ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, NULL);
 	if (ret)
-		goto err;
+		return ret;
 
 	prm = &agdev->uac2.c_prm;
 	prm->max_psize = hs_epout_desc.wMaxPacketSize;
@@ -1117,19 +1117,19 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
 	prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL);
 	if (!prm->rbuf) {
 		prm->max_psize = 0;
-		goto err_free_descs;
+		goto err;
 	}
 
 	ret = alsa_uac2_init(agdev);
 	if (ret)
-		goto err_free_descs;
+		goto err;
 	return 0;
 
-err_free_descs:
-	usb_free_all_descriptors(fn);
 err:
 	kfree(agdev->uac2.p_prm.rbuf);
 	kfree(agdev->uac2.c_prm.rbuf);
+err_free_descs:
+	usb_free_all_descriptors(fn);
 	return -EINVAL;
 }
 
@@ -1291,6 +1291,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
 
 	if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
 		struct cntrl_cur_lay3 c;
+		memset(&c, 0, sizeof(struct cntrl_cur_lay3));
 
 		if (entity_id == USB_IN_CLK_ID)
 			c.dCUR = p_srate;