spi: imx: do not access registers while clocks disabled

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commit d593574aff upstream.

Since clocks are disabled except during message transfer clocks
are also disabled when spi_imx_remove gets called. Accessing
registers leads to a freeeze at least on a i.MX 6ULL. Enable
clocks before disabling accessing the MXC_CSPICTRL register.

Fixes: 9e556dcc55 ("spi: spi-imx: only enable the clocks when we start to transfer a message")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Stefan Agner 2018-01-07 15:05:49 +01:00 • committed by Greg Kroah-Hartman

parent 68c610bf1e

commit bac4bf53ca

1 changed files with 13 additions and 2 deletions

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drivers/spi/spi-imx.c

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