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path: root/target/linux/brcm2708/patches-4.4/0207-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch
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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0207-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0207-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch44
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0207-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch b/target/linux/brcm2708/patches-4.4/0207-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch
new file mode 100644
index 0000000000..201cdc834a
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0207-dwc_otg-Don-t-free-qh-align-buffers-in-atomic-contex.patch
@@ -0,0 +1,44 @@
+From 4558f488edf41daddd4bceed975f3af8cee89033 Mon Sep 17 00:00:00 2001
+From: P33M <P33M@github.com>
+Date: Fri, 18 Mar 2016 17:38:37 +0000
+Subject: [PATCH 207/232] 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;
+ }
+