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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0146-dcw_otg-trim-xfer-length-when-buffer-larger-than-all.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0146-dcw_otg-trim-xfer-length-when-buffer-larger-than-all.patch37
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0146-dcw_otg-trim-xfer-length-when-buffer-larger-than-all.patch b/target/linux/brcm2708/patches-4.4/0146-dcw_otg-trim-xfer-length-when-buffer-larger-than-all.patch
new file mode 100644
index 0000000000..519264bb0f
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0146-dcw_otg-trim-xfer-length-when-buffer-larger-than-all.patch
@@ -0,0 +1,37 @@
+From 63ff907f6e6ab3b93535dc2b5251b7b41eaf7ec2 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Fri, 12 Feb 2016 14:50:25 +0000
+Subject: [PATCH 146/232] dcw_otg: trim xfer length when buffer larger than
+ allocated size is received
+
+---
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
+@@ -737,6 +737,11 @@ static int update_urb_state_xfer_comp(dw
+ DWC_OTG_HC_XFER_COMPLETE,
+ &short_read);
+
++ if (urb->actual_length + xfer_length > urb->length) {
++ DWC_WARN("%s(): trimming xfer length\n", __func__);
++ xfer_length = urb->length - urb->actual_length;
++ }
++
+ /* non DWORD-aligned buffer case handling. */
+ if (hc->align_buff && xfer_length && hc->ep_is_in) {
+ dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,
+@@ -1423,6 +1428,12 @@ static void update_urb_state_xfer_intr(d
+ {
+ uint32_t bytes_transferred = get_actual_xfer_length(hc, hc_regs, qtd,
+ halt_status, NULL);
++
++ if (urb->actual_length + bytes_transferred > urb->length) {
++ DWC_WARN("%s(): trimming xfer length\n", __func__);
++ bytes_transferred = urb->length - urb->actual_length;
++ }
++
+ /* non DWORD-aligned buffer case handling. */
+ if (hc->align_buff && bytes_transferred && hc->ep_is_in) {
+ dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,