spi: Remove check for controller idling in spi sync path

Now that the idling flag is wholly behind the io_mutex, this broken piece
of code can be safely removed.

Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-6-david@protonic.nl
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index fa2d091..d8d2b7a 100644 (file)
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3964,10 +3964,6 @@ static void __spi_transfer_message_noqueue(struct spi_controller *ctlr, struct s
 
        mutex_lock(&ctlr->io_mutex);
 
-       /* If another context is idling the device then wait */
-       while (ctlr->idling)
-               usleep_range(10000, 11000);
-
        was_busy = READ_ONCE(ctlr->busy);
 
        ret = __spi_pump_transfer_message(ctlr, msg, was_busy);