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List: haiku-bugs
Subject: [haiku-bugs] Re: [Haiku] #16794: XHCI: Divide error exception in SubmitNormalRequest
From: "Haiku" <trac () haiku-os ! org>
Date: 2021-04-19 5:54:08
Message-ID: 059.89c0f342f51fadbf22fa8494bdeb600a () haiku-os ! org
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#16794: XHCI: Divide error exception in SubmitNormalRequest
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Reporter: LSS37040 | Owner: waddlesplash
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: Drivers/USB/XHCI | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 16878
Platform: x86-64 |
-------------------------------+----------------------------
Comment (by LSS37040):
Replying to [comment:5 waddlesplash]:
> I wonder if the problem here is that the xhci_endpoint is actually not
initialized. Adding checks for that may solve this. However I am not sure
how we can wind up in a state where the endpoint is not initialized but a
Pipe exists...
I'm not an expert, but I do recall seeing some BIOSes/bootloaders don't
play well with empty card readers before (that I either need to insert a
card in it, or hide the reader somehow).
I think the BIOS could interpret empty card readers in all kinds of ways,
and in some cases would cause certain BIOS/system calls to return invalid
values which make the caller freaks out.
-- =
Ticket URL: <https://dev.haiku-os.org/ticket/16794#comment:7>
Haiku <https://dev.haiku-os.org>
The Haiku operating system.
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