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authorGregory Herrero <gregory.herrero@intel.com>2015-11-05 09:41:38 +0100
committerFelipe Balbi <balbi@ti.com>2015-12-15 09:12:41 -0600
commitdde4c1bf5df0f852e497e5644d3578885b969fdb (patch)
treeaa1363839ab715ee09987de69f918fa56b78beae /drivers/usb/dwc2/hcd_ddma.c
parent3ac38d260fa5dc8ec26ee5b6f5330d726ec00065 (diff)
usb: dwc2: host: set active bit in isochronous descriptors
Active bit must be enabled in all scheduled descriptors. Else transfer never start. Remove previous code which was not correctly configuring descriptors. Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which is erasing dma_desc->status. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2/hcd_ddma.c')
-rw-r--r--drivers/usb/dwc2/hcd_ddma.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/usb/dwc2/hcd_ddma.c b/drivers/usb/dwc2/hcd_ddma.c
index 4b0be93dac6f..98d862726b5a 100644
--- a/drivers/usb/dwc2/hcd_ddma.c
+++ b/drivers/usb/dwc2/hcd_ddma.c
@@ -524,6 +524,9 @@ static void dwc2_fill_host_isoc_dma_desc(struct dwc2_hsotg *hsotg,
dma_desc->status = qh->n_bytes[idx] << HOST_DMA_ISOC_NBYTES_SHIFT &
HOST_DMA_ISOC_NBYTES_MASK;
+ /* Set active bit */
+ dma_desc->status |= HOST_DMA_A;
+
qh->ntd++;
qtd->isoc_frame_index_last++;
@@ -559,8 +562,6 @@ static void dwc2_init_isoc_dma_desc(struct dwc2_hsotg *hsotg,
list_for_each_entry(qtd, &qh->qtd_list, qtd_list_entry) {
while (qh->ntd < ntd_max && qtd->isoc_frame_index_last <
qtd->urb->packet_count) {
- if (n_desc > 1)
- qh->desc_list[n_desc - 1].status |= HOST_DMA_A;
dwc2_fill_host_isoc_dma_desc(hsotg, qtd, qh,
max_xfer_size, idx);
idx = dwc2_desclist_idx_inc(idx, inc, qh->dev_speed);
@@ -606,12 +607,6 @@ static void dwc2_init_isoc_dma_desc(struct dwc2_hsotg *hsotg,
qh->desc_list[idx].status |= HOST_DMA_IOC;
#endif
-
- if (n_desc) {
- qh->desc_list[n_desc - 1].status |= HOST_DMA_A;
- if (n_desc > 1)
- qh->desc_list[0].status |= HOST_DMA_A;
- }
}
static void dwc2_fill_host_dma_desc(struct dwc2_hsotg *hsotg,