diff options
| author | Peter Chen <peter.chen@nxp.com> | 2017-05-17 17:32:01 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-18 15:19:41 +0200 |
| commit | 7480d912d549f414e0ce39331870899e89a5598c (patch) | |
| tree | 41525528c65e66d98d11ef3ebcd029e5c45382dc /drivers/usb/host/xhci-mem.c | |
| parent | xhci: apply PME_STUCK_QUIRK and MISSING_CAS quirk for Denverton (diff) | |
| download | linux-7480d912d549f414e0ce39331870899e89a5598c.tar.xz linux-7480d912d549f414e0ce39331870899e89a5598c.zip | |
usb: host: xhci-mem: allocate zeroed Scratchpad Buffer
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'
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 69428e970925..12b573cfb846 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1724,7 +1724,7 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) xhci->dcbaa->dev_context_ptrs[0] = cpu_to_le64(xhci->scratchpad->sp_dma); for (i = 0; i < num_sp; i++) { dma_addr_t dma; - void *buf = dma_alloc_coherent(dev, xhci->page_size, &dma, + void *buf = dma_zalloc_coherent(dev, xhci->page_size, &dma, flags); if (!buf) goto fail_sp4; |