Bochs x86 PC emulator / Bugs / #1409 usb_msd failing to read/write requests larger than 131kb, patch supplied

usb_msd failing to read/write requests larger than 131kb, patch supplied

#1409 usb_msd failing to read/write requests larger than 131kb, patch supplied

Milestone: fixed_in_SVN

Status: closed

Owner: Stanislav Shwartsman

Labels: usb (1) msd (1) fix (1)

Priority: 1

Updated: 2019-12-12

Created: 2019-12-12

Creator: Philip Meulengracht

Private: No

When reading or writing larger chunks with the usb_msd driver, it seems there is a case where the usb_msd driver stops working when reading or writing data that is larger than the DMA buffer size of 131kb. When performing copy_data, it tries to refresh the DMA buffer when running out of data - but it still defers the packet even tho the data is available. I've fixed this by making sure that it only stops copying data and defers the packet if there is no data available anymore.

I've attached a single line of code change that fixes this case.

1 Attachments

usb_msd_large_rw_fix.patch

Discussion

Philip Meulengracht - 2019-12-12

This happens with bochs 2.6.10, latest svn

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Stanislav Shwartsman - 2019-12-12

Applied to SVN. Thanks

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Stanislav Shwartsman - 2019-12-12

status: open --> closed

assigned_to: Stanislav Shwartsman

Group: pending --> fixed_in_SVN
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usb_msd failing to read/write requests larger than 131kb, patch supplied

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#1409 usb_msd failing to read/write requests larger than 131kb, patch supplied

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