diff options
Diffstat (limited to 'config/grub/xhci/patches/0016-usbtrans-Set-default-maximum-packet-size.patch')
| -rw-r--r-- | config/grub/xhci/patches/0016-usbtrans-Set-default-maximum-packet-size.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/config/grub/xhci/patches/0016-usbtrans-Set-default-maximum-packet-size.patch b/config/grub/xhci/patches/0016-usbtrans-Set-default-maximum-packet-size.patch new file mode 100644 index 00000000..8f6bb001 --- /dev/null +++ b/config/grub/xhci/patches/0016-usbtrans-Set-default-maximum-packet-size.patch @@ -0,0 +1,33 @@ +From ba7ce6daec155bc3deac4e0c48d470afa024ab94 Mon Sep 17 00:00:00 2001 +From: Patrick Rudolph <patrick.rudolph@9elements.com> +Date: Sun, 15 Nov 2020 19:48:03 +0100 +Subject: [PATCH 16/22] usbtrans: Set default maximum packet size + +Set the maximum packet size to 512 for SuperSpeed devices. + +Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> +--- + grub-core/bus/usb/usbtrans.c | 6 +++++- + 1 file changed, 5 insertions(+), 1 deletion(-) + +diff --git a/grub-core/bus/usb/usbtrans.c b/grub-core/bus/usb/usbtrans.c +index c5680b33a..c1080bb33 100644 +--- a/grub-core/bus/usb/usbtrans.c ++++ b/grub-core/bus/usb/usbtrans.c +@@ -128,8 +128,12 @@ grub_usb_control_msg (grub_usb_device_t dev, + setupdata_addr = grub_dma_get_phys (setupdata_chunk); + + /* Determine the maximum packet size. */ +- if (dev->descdev.maxsize0) ++ if (dev->descdev.maxsize0 && dev->speed != GRUB_USB_SPEED_SUPER) + max = dev->descdev.maxsize0; ++ else if (dev->descdev.maxsize0 && dev->speed == GRUB_USB_SPEED_SUPER) ++ max = 1UL << dev->descdev.maxsize0; ++ else if (dev->speed == GRUB_USB_SPEED_SUPER) ++ max = 512; + else + max = 64; + +-- +2.39.2 + |