From 0f269d99fd170929f613b9fa9edcc9af1a5b7c2b Mon Sep 17 00:00:00 2001
From: Diego Ismirlian <dismirlian (at) google's mail.com>
Date: Fri, 14 Jul 2017 11:01:44 -0300
Subject: [PATCH] USBH: HID: corrected interrupt IN request length

---
 os/hal/src/usbh/hal_usbh_hid.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/os/hal/src/usbh/hal_usbh_hid.c b/os/hal/src/usbh/hal_usbh_hid.c
index 269b1b29..6d0e116f 100644
--- a/os/hal/src/usbh/hal_usbh_hid.c
+++ b/os/hal/src/usbh/hal_usbh_hid.c
@@ -222,8 +222,11 @@ void usbhhidStart(USBHHIDDriver *hidp, const USBHHIDConfig *cfg) {
 	hidp->config = cfg;
 
 	/* init the URBs */
+	uint32_t report_len = hidp->epin.wMaxPacketSize;
+	if (report_len > cfg->report_len)
+		report_len = cfg->report_len;
 	usbhURBObjectInit(&hidp->in_urb, &hidp->epin, _in_cb, hidp,
-			cfg->report_buffer, cfg->report_len);
+			cfg->report_buffer, report_len);
 
 	/* open the int IN/OUT endpoints */
 	usbhEPOpen(&hidp->epin);