3.2.93-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Peter Chen <[email protected]> commit 7480d912d549f414e0ce39331870899e89a5598c upstream. According to xHCI ch4.20 Scratchpad Buffers, the Scratchpad Buffer needs to be zeroed. ... The following operations take place to allocate Scratchpad Buffers to the xHC: ... b. Software clears the Scratchpad Buffer to '0' Signed-off-by: Peter Chen <[email protected]> Signed-off-by: Mathias Nyman <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> [bwh: Backported to 3.2: we only do one allocation for scratchpad buffers] Signed-off-by: Ben Hutchings <[email protected]> --- drivers/usb/host/xhci-mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1591,7 +1591,7 @@ static int scratchpad_alloc(struct xhci_ if (!xhci->scratchpad) goto fail_sp; - xhci->scratchpad->sp_array = dma_alloc_coherent(dev, + xhci->scratchpad->sp_array = dma_zalloc_coherent(dev, num_sp * sizeof(u64), &xhci->scratchpad->sp_dma, flags); if (!xhci->scratchpad->sp_array)
