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44 lines
1.3 KiB
Diff
44 lines
1.3 KiB
Diff
From 63c48596343f1431c898381a06629eef2719fbeb Mon Sep 17 00:00:00 2001
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From: P33M <P33M@github.com>
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Date: Fri, 18 Mar 2016 17:38:37 +0000
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Subject: [PATCH] dwc_otg: Don't free qh align buffers in atomic context
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---
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drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
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+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
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@@ -56,6 +56,9 @@ void dwc_otg_hcd_qh_free(dwc_otg_hcd_t *
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{
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dwc_otg_qtd_t *qtd, *qtd_tmp;
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dwc_irqflags_t flags;
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+ uint32_t buf_size = 0;
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+ uint8_t *align_buf_virt = NULL;
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+ dwc_dma_t align_buf_dma;
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/* Free each QTD in the QTD list */
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DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
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@@ -67,17 +70,19 @@ void dwc_otg_hcd_qh_free(dwc_otg_hcd_t *
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if (hcd->core_if->dma_desc_enable) {
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dwc_otg_hcd_qh_free_ddma(hcd, qh);
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} else if (qh->dw_align_buf) {
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- uint32_t buf_size;
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if (qh->ep_type == UE_ISOCHRONOUS) {
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buf_size = 4096;
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} else {
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buf_size = hcd->core_if->core_params->max_transfer_size;
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}
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- DWC_DMA_FREE(buf_size, qh->dw_align_buf, qh->dw_align_buf_dma);
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+ align_buf_virt = qh->dw_align_buf;
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+ align_buf_dma = qh->dw_align_buf_dma;
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}
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DWC_FREE(qh);
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DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
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+ if (align_buf_virt)
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+ DWC_DMA_FREE(buf_size, align_buf_virt, align_buf_dma);
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return;
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}
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