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| author | William Wu <william.wu@rock-chips.com> | 2018-05-21 13:12:00 +0300 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-06-19 12:48:13 +0300 |
| commit | 8760675932ddb614e83702117d36ea644050c609 (patch) | |
| tree | 547103445403587d3235a8a8aa9ec307af54489f /drivers/net | |
| parent | 22bb5cfdf13ae70c6a34508a16cfeee48f162443 (diff) | |
| download | linux-8760675932ddb614e83702117d36ea644050c609.tar.xz | |
usb: dwc2: fix the incorrect bitmaps for the ports of multi_tt hub
The dwc2_get_ls_map() use ttport to reference into the
bitmap if we're on a multi_tt hub. But the bitmaps index
from 0 to (hub->maxchild - 1), while the ttport index from
1 to hub->maxchild. This will cause invalid memory access
when the number of ttport is hub->maxchild.
Without this patch, I can easily meet a Kernel panic issue
if connect a low-speed USB mouse with the max port of FE2.1
multi-tt hub (1a40:0201) on rk3288 platform.
Fixes: 9f9f09b048f5 ("usb: dwc2: host: Totally redo the microframe scheduler")
Cc: <stable@vger.kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Minas Harutyunyan hminas@synopsys.com>
Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/net')
0 files changed, 0 insertions, 0 deletions