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| author | Himanshu Jha <himanshujha199640@gmail.com> | 2017-12-31 01:33:52 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-04 17:03:15 +0100 |
| commit | 2b80a29bf83d2baed1a22193647bafcc6a0426af (patch) | |
| tree | 7081bb3902ffa221224dad0f160af26690b15cf3 | |
| parent | d19000b885beea01947b8ed94506afe7dc4ab91b (diff) | |
| download | op-kernel-dev-2b80a29bf83d2baed1a22193647bafcc6a0426af.zip op-kernel-dev-2b80a29bf83d2baed1a22193647bafcc6a0426af.tar.gz | |
USB: host: Use zeroing memory allocator rather than allocator/memset
Use dma_zalloc_coherent for allocating zeroed
memory and remove unnecessary memset function.
Done using Coccinelle.
Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
0-day tested with no failures.
Suggested-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/uhci-hcd.c | 3 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 7 |
2 files changed, 3 insertions, 7 deletions
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index f5c9021..f9c3947 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -600,7 +600,7 @@ static int uhci_start(struct usb_hcd *hcd) uhci->dentry = dentry; #endif - uhci->frame = dma_alloc_coherent(uhci_dev(uhci), + uhci->frame = dma_zalloc_coherent(uhci_dev(uhci), UHCI_NUMFRAMES * sizeof(*uhci->frame), &uhci->frame_dma_handle, GFP_KERNEL); if (!uhci->frame) { @@ -608,7 +608,6 @@ static int uhci_start(struct usb_hcd *hcd) "unable to allocate consistent memory for frame list\n"); goto err_alloc_frame; } - memset(uhci->frame, 0, UHCI_NUMFRAMES * sizeof(*uhci->frame)); uhci->frame_cpu = kcalloc(UHCI_NUMFRAMES, sizeof(*uhci->frame_cpu), GFP_KERNEL); diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 554a8a5..332420d 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1782,14 +1782,11 @@ int xhci_alloc_erst(struct xhci_hcd *xhci, struct xhci_erst_entry *entry; size = sizeof(struct xhci_erst_entry) * evt_ring->num_segs; - erst->entries = dma_alloc_coherent(xhci_to_hcd(xhci)->self.sysdev, - size, - &erst->erst_dma_addr, - flags); + erst->entries = dma_zalloc_coherent(xhci_to_hcd(xhci)->self.sysdev, + size, &erst->erst_dma_addr, flags); if (!erst->entries) return -ENOMEM; - memset(erst->entries, 0, size); erst->num_entries = evt_ring->num_segs; seg = evt_ring->first_seg; |
