[PATCH v2 2/7] xhci: mem: Use dma_poll_zalloc() instead of explicit memset()

Andy Shevchenko
2023-02-08T15:15:02Z

Use dma_poll_zalloc() instead of explicit memset() call in
xhci_alloc_stream_ctx(). Note, that dma_alloc_coherent() is
always issues zeroed memory chunk.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/usb/host/xhci-mem.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index c385513ad00b..4ffa6495878d 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -575,10 +575,10 @@ static struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci,
return dma_alloc_coherent(dev, size,
dma, mem_flags);
else if (size <= SMALL_STREAM_ARRAY_SIZE)
- return dma_pool_alloc(xhci->small_streams_pool,
+ return dma_pool_zalloc(xhci->small_streams_pool,
mem_flags, dma);
else
- return dma_pool_alloc(xhci->medium_streams_pool,
+ return dma_pool_zalloc(xhci->medium_streams_pool,
mem_flags, dma);
}

@@ -643,8 +643,6 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
mem_flags);
if (!stream_info->stream_ctx_array)
goto cleanup_ring_array;
- memset(stream_info->stream_ctx_array, 0,
- sizeof(struct xhci_stream_ctx)*num_stream_ctxs);

/* Allocate everything needed to free the stream rings later */
stream_info->free_streams_command =
--
2.39.1