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authorVincent Palatin <vpalatin@chromium.org>2012-07-24 07:12:02 +0000
committerMarek Vasut <marex@denx.de>2012-10-22 08:25:07 +0200
commit8b8d779dacc149be0607dfc1b399bbdb62e57108 (patch)
tree7198df8ddee428b5cf7094fb401db53958f3b65f /drivers/usb
parente81e79ede1aa1052735b9ee9a364f99b93605a08 (diff)
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usb: fallback safely when a configuration descriptor is too large
When a USB configuration descriptor was larger than our USB buffer (512 bytes), we were skipping the full descriptor reading but then we were still parsing and using it, triggering memory corruptions. Now in that case, it just skips this device enumeration and displays the appropriate message to the user, so he can fix the buffer if he wants. This bug was triggered by some UVC webcams which have very large configuration descriptors (e.g. a couple of kB) describing all their supported video encodings. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/usb')
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