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usb: xhci: Abort transfers with unallocated rings

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Discovered while trying to use the second interface in the USB keyboard
driver necessary on Apple USB keyboards.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>
This commit is contained in:
Janne Grunau 2024-04-04 08:25:51 +02:00 committed by Marek Vasut
parent 086e461d9e
commit 0b6775c402
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/host/xhci-ring.c
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@ -685,6 +685,9 @@ int xhci_bulk_tx(struct usb_device *udev, unsigned long pipe,
reset_ep(udev, ep_index);
ring = virt_dev->eps[ep_index].ring;
if (!ring)
return -EINVAL;
/*
* How much data is (potentially) left before the 64KB boundary?
* XHCI Spec puts restriction( TABLE 49 and 6.4.1 section of XHCI Spec)
@ -871,6 +874,8 @@ int xhci_ctrl_tx(struct usb_device *udev, unsigned long pipe,
ep_index = usb_pipe_ep_index(pipe);
ep_ring = virt_dev->eps[ep_index].ring;
if (!ep_ring)
return -EINVAL;
/*
* Check to see if the max packet size for the default control