Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998

This brings LA.UM.8.4.r1-05400-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
96b09cba55905 UPSTREAM: net: socket: set sock->sk to NULL after calling proto_ops::release()

Conflicts:
	drivers/scsi/ufs/ufshcd.c
	drivers/usb/gadget/composite.c
	drivers/usb/gadget/function/f_fs.c

Change-Id: I3e79c0d20e3eb3246a50c9a1e815cdf030a4232e

1 files changed, 52 insertions, 0 deletions

diff --git a/sound/usb/format.c b/sound/usb/format.c
index cb23dd1670b3..daff52e78317 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -253,6 +253,52 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
 }
 
 /*
+ * Many Focusrite devices supports a limited set of sampling rates per
+ * altsetting. Maximum rate is exposed in the last 4 bytes of Format Type
+ * descriptor which has a non-standard bLength = 10.
+ */
+static bool focusrite_valid_sample_rate(struct snd_usb_audio *chip,
+					struct audioformat *fp,
+					unsigned int rate)
+{
+	struct usb_interface *iface;
+	struct usb_host_interface *alts;
+	unsigned char *fmt;
+	unsigned int max_rate;
+
+	iface = usb_ifnum_to_if(chip->dev, fp->iface);
+	if (!iface)
+		return true;
+
+	alts = &iface->altsetting[fp->altset_idx];
+	fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen,
+				      NULL, UAC_FORMAT_TYPE);
+	if (!fmt)
+		return true;
+
+	if (fmt[0] == 10) { /* bLength */
+		max_rate = combine_quad(&fmt[6]);
+
+		/* Validate max rate */
+		if (max_rate != 48000 &&
+		    max_rate != 96000 &&
+		    max_rate != 192000 &&
+		    max_rate != 384000) {
+
+			usb_audio_info(chip,
+				"%u:%d : unexpected max rate: %u\n",
+				fp->iface, fp->altsetting, max_rate);
+
+			return true;
+		}
+
+		return rate <= max_rate;
+	}
+
+	return true;
+}
+
+/*
  * Helper function to walk the array of sample rate triplets reported by
  * the device. The problem is that we need to parse whole array first to
  * get to know how many sample rates we have to expect.
@@ -288,6 +334,11 @@ static int parse_uac2_sample_rate_range(struct snd_usb_audio *chip,
 		}
 
 		for (rate = min; rate <= max; rate += res) {
+			/* Filter out invalid rates on Focusrite devices */
+			if (USB_ID_VENDOR(chip->usb_id) == 0x1235 &&
+			    !focusrite_valid_sample_rate(chip, fp, rate))
+				goto skip_rate;
+
 			if (fp->rate_table)
 				fp->rate_table[nr_rates] = rate;
 			if (!fp->rate_min || rate < fp->rate_min)
@@ -302,6 +353,7 @@ static int parse_uac2_sample_rate_range(struct snd_usb_audio *chip,
 				break;
 			}
 
+skip_rate:
 			/* avoid endless loop */
 			if (res == 0)
 				break;