diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0590-dwc_otg-fix-summarize-urb-actual_length-for-isochron.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0590-dwc_otg-fix-summarize-urb-actual_length-for-isochron.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0590-dwc_otg-fix-summarize-urb-actual_length-for-isochron.patch b/target/linux/brcm2708/patches-4.4/0590-dwc_otg-fix-summarize-urb-actual_length-for-isochron.patch new file mode 100644 index 0000000000..e799081662 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0590-dwc_otg-fix-summarize-urb-actual_length-for-isochron.patch @@ -0,0 +1,33 @@ +From 83672d68ed0199fbe119510626116a32622e4003 Mon Sep 17 00:00:00 2001 +From: Martin Cerveny <M.Cerveny@computer.org> +Date: Mon, 13 Feb 2017 17:23:47 +0100 +Subject: [PATCH] dwc_otg: fix summarize urb->actual_length for isochronous + transfers + +Kernel does not copy input data of ISO transfers to userspace +if actual_length is set only in ISO transfers and not summarized +in urb->actual_length. Fixes raspberrypi/linux#903 +--- + drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c +index 2ceed42..5011750 100644 +--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c ++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c +@@ -325,10 +325,12 @@ static int _complete(dwc_otg_hcd_t * hcd, void *urb_handle, + int i; + + urb->error_count = dwc_otg_hcd_urb_get_error_count(dwc_otg_urb); ++ urb->actual_length = 0; + for (i = 0; i < urb->number_of_packets; ++i) { + urb->iso_frame_desc[i].actual_length = + dwc_otg_hcd_urb_get_iso_desc_actual_length + (dwc_otg_urb, i); ++ urb->actual_length += urb->iso_frame_desc[i].actual_length; + urb->iso_frame_desc[i].status = + dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_urb, i); + } +-- +2.1.4 + |