iio: health: max30100: fixed parenthesis around FIFO count check

commit 828f84ee8f84710ea1818b3565add268bcb824c8 upstream.

FIFO was being read every sample after the "almost full" state was
reached. This was due to an incorrect placement of the parenthesis
in the while condition check.

Note - the fixes tag is not actually correct, but the fix in this patch
would also be needed for it to function correctly so we'll go with that
one.  Backports should pick up both.

Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Fixes: b74fccad7 ("iio: health: max30100: correct FIFO check condition")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/health/max30100.c b/drivers/iio/health/max30100.c
index 90ab8a2d2846f8a8591ee6b1615dce2c984020ef..183c14329d6e350f6325b0e77a95dcb56de892dd 100644 (file)
--- a/drivers/iio/health/max30100.c
+++ b/drivers/iio/health/max30100.c
@@ -238,7 +238,7 @@ static irqreturn_t max30100_interrupt_handler(int irq, void *private)
 
        mutex_lock(&data->lock);
 
-       while (cnt || (cnt = max30100_fifo_count(data) > 0)) {
+       while (cnt || (cnt = max30100_fifo_count(data)) > 0) {
                ret = max30100_read_measurement(data);
                if (ret)
                        break;