diff options
Diffstat (limited to 'recipes-bsp/u-boot-mainline/files/0003-usb-limit-USB_MAX_XFER_BLK-to-256.patch')
| -rw-r--r-- | recipes-bsp/u-boot-mainline/files/0003-usb-limit-USB_MAX_XFER_BLK-to-256.patch | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/recipes-bsp/u-boot-mainline/files/0003-usb-limit-USB_MAX_XFER_BLK-to-256.patch b/recipes-bsp/u-boot-mainline/files/0003-usb-limit-USB_MAX_XFER_BLK-to-256.patch new file mode 100644 index 0000000..58526af --- /dev/null +++ b/recipes-bsp/u-boot-mainline/files/0003-usb-limit-USB_MAX_XFER_BLK-to-256.patch @@ -0,0 +1,67 @@ +From 70e00d1f20c331a1da991abc7b36f0f6a20751dc Mon Sep 17 00:00:00 2001 +From: Peng Fan <peng.fan@nxp.com> +Date: Mon, 6 Jun 2016 13:53:43 +0800 +Subject: [PATCH 03/19] usb: limit USB_MAX_XFER_BLK to 256 + +For Some USB mass storage devices, such as: +" + - Kingston DataTraveler 2.0 001D7D06CF09B04199C7B3EA + - Class: (from Interface) Mass Storage + - PacketSize: 64 Configurations: 1 + - Vendor: 0x0930 Product 0x6545 Version 1.16 +" +When `usb read 0x80000000 0 0x2000`, we met +"EHCI timed out on TD - token=0x80008d80". + +The devices does not support scsi VPD page, we are not able +to get the maximum transfer length for READ(10)/WRITE(10). + +So we limit this to 256 blocks as READ(6). + +Signed-off-by: Peng Fan <peng.fan@nxp.com> +Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> +(cherry picked from commit df0052575b2bc9d66ae73584768e1a457ed5d914) + +Series-to: u-boot@lists.denx.de + +Series-prefix: RFC + +Series-version: 3 + +Series-changes: 2 +- Fixed spelling in comment as suggested by Igor. + +Series-changes: 3 +- Drop the reference to the NXP internal MLK-xxx tracking number as + suggested by Peng. + +Commit-notes: +This comes from NXP's downstream and has proven to tremendously improve +the situation with those odd USB mass storage aka memory sticks. This is +why I post it here asking whether or not this may be something +benefiting more people. Any feedback and suggestions are welcome. +END +--- + common/usb_storage.c | 6 +++++- + 1 file changed, 5 insertions(+), 1 deletion(-) + +diff --git a/common/usb_storage.c b/common/usb_storage.c +index 8c889bb1a6..4e284645f5 100644 +--- a/common/usb_storage.c ++++ b/common/usb_storage.c +@@ -949,7 +949,11 @@ static void usb_stor_set_max_xfer_blk(struct usb_device *udev, + * there is enough free heap space left, but the SCSI READ(10) and + * WRITE(10) commands are limited to 65535 blocks. + */ +- blk = USHRT_MAX; ++ /* ++ * Some USB mass storage devices have issues, limiting this to 256 ++ * fixes this. ++ */ ++ blk = 256; + #else + blk = 20; + #endif +-- +2.14.5 + |