1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0206-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch b/target/linux/brcm2708/patches-4.4/0206-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch
new file mode 100644
index 0000000..1ce9bdd
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0206-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch
@@ -0,0 +1,44 @@
+From d23d96422dd69238fa10d24ecb0323427359ef30 Mon Sep 17 00:00:00 2001
+From: P33M <P33M@github.com>
+Date: Fri, 18 Mar 2016 17:38:37 +0000
+Subject: [PATCH 206/304] dwc_otg: Don't free qh align buffers in atomic
+ context
+
+---
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
+@@ -56,6 +56,9 @@ void dwc_otg_hcd_qh_free(dwc_otg_hcd_t *
+ {
+ 	dwc_otg_qtd_t *qtd, *qtd_tmp;
+ 	dwc_irqflags_t flags;
++	uint32_t buf_size = 0;
++	uint8_t *align_buf_virt = NULL;
++	dwc_dma_t align_buf_dma;
+ 
+ 	/* Free each QTD in the QTD list */
+ 	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
+@@ -67,17 +70,19 @@ void dwc_otg_hcd_qh_free(dwc_otg_hcd_t *
+ 	if (hcd->core_if->dma_desc_enable) {
+ 		dwc_otg_hcd_qh_free_ddma(hcd, qh);
+ 	} else if (qh->dw_align_buf) {
+-		uint32_t buf_size;
+ 		if (qh->ep_type == UE_ISOCHRONOUS) {
+ 			buf_size = 4096;
+ 		} else {
+ 			buf_size = hcd->core_if->core_params->max_transfer_size;
+ 		}
+-		DWC_DMA_FREE(buf_size, qh->dw_align_buf, qh->dw_align_buf_dma);
++		align_buf_virt = qh->dw_align_buf;
++		align_buf_dma = qh->dw_align_buf_dma;
+ 	}
+ 
+ 	DWC_FREE(qh);
+ 	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++	if (align_buf_virt)
++		DWC_DMA_FREE(buf_size, align_buf_virt, align_buf_dma);
+ 	return;
+ }
+