This relaxes the cpu in the polling busy-wait loop.
Reported-by: Vitaly Wool <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
---
drivers/spi/amba-pl022.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/spi/amba-pl022.c b/drivers/spi/amba-pl022.c
index 18667de..8a2b88a 100644
--- a/drivers/spi/amba-pl022.c
+++ b/drivers/spi/amba-pl022.c
@@ -1424,6 +1424,7 @@ static void do_polling_transfer(struct pl022 *pl022)
message->state = STATE_ERROR;
goto out;
}
+ cpu_relax();
}
/* Update total byte transferred */
--
1.7.3.2
------------------------------------------------------------------------------
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