spi: imx: add timeout to xchg_single
If there is a problem STAT_RR might never be set which results in an endless loop.
Break out after 10 µs with -ETIMEOUT instead.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
1 parent 17dbda0 commit 1439cdf7c6fcee23b5734da8eb2b14d89309d00a
@Uwe Kleine-König Uwe Kleine-König authored on 2 Aug 2017
Lucas Stach committed on 15 Aug 2017
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drivers/spi/imx_spi.c