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net: emaclite: add barriers to support Xilinx Zynq platform
This patch adds barriers at appropriate places to ensure the driver works on Xilinx Zynq ARM-based SoC platform. Signed-off-by: Srikanth Thokala <sthokal@xilinx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -220,6 +220,13 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr,
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*to_u16_ptr++ = *from_u16_ptr++;
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*to_u16_ptr++ = *from_u16_ptr++;
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/* This barrier resolves occasional issues seen around
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* cases where the data is not properly flushed out
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* from the processor store buffers to the destination
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* memory locations.
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*/
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wmb();
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/* Output a word */
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*to_u32_ptr++ = align_buffer;
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}
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@ -235,6 +242,12 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr,
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for (; length > 0; length--)
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*to_u8_ptr++ = *from_u8_ptr++;
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/* This barrier resolves occasional issues seen around
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* cases where the data is not properly flushed out
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* from the processor store buffers to the destination
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* memory locations.
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*/
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wmb();
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*to_u32_ptr = align_buffer;
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}
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}
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