linux-kernel - spi-imx: wait_for_completion should timeout even in non-DMA transfer cases

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Date:	Fri, 18 Sep 2015 14:38:27 +0200
From:	Jean-Michel Hautbois <jean-michel.hautbois@...-labs.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	linux-spi@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: spi-imx: wait_for_completion should timeout even in non-DMA transfer cases

Hi,

I am wondering why in spi-imx the spi_imx_pio_transfer() function is
calling wait_for_completion() and not wait_for_completion_timeout() as
in the spi_imx_dma_transfer() one.
I can't see a good reason for this, maybe should it be calculated
based on the spi clock and transfer->len, or at least be the same as
IMX_DMA_TIMEOUT which is 3 seconds ?
If you want it, I have a patch, just tell me if you are interested and
if you prefer a calculated timeout or even something else ?

Thanks,
JM
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