[PATCH 4/4] spi: s3c64xx: Fix large transfers with DMA

[Mark Brown]

On Fri, Sep 16, 2022 at 01:39:51PM +0200, Vincent Whitchurch wrote:
> The COUNT_VALUE in the PACKET_CNT register is 16-bit so the maximum
> value is 65535.  Asking the driver to transfer a larger size currently
> leads to the DMA transfer timing out.  Fix this by splitting the
> transfer as needed.

The driver should just set max_transfer_size and let the core
handle this.
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