[PATCH][next] drm/i2c: tda9950: fix timeout counter check

Colin King colin.king at canonical.com
Sun May 27 21:42:55 UTC 2018

From: Colin Ian King <colin.king at canonical.com>

Currently the check to see if the timeout has reached zero is incorrect
and the check is instead checking if the timeout is non-zero and not
zero, hence it will break out of the loop on the first iteration and
the msleep is never executed.  Fix this by breaking from the loop when
timeout is zero.

Detected by CoverityScan, CID#1469404 ("Logically Dead Code")

Fixes: f0316f93897c ("drm/i2c: tda9950: add CEC driver")
Signed-off-by: Colin Ian King <colin.king at canonical.com>
 drivers/gpu/drm/i2c/tda9950.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i2c/tda9950.c b/drivers/gpu/drm/i2c/tda9950.c
index 3f7396caad48..f2186409f0cf 100644
--- a/drivers/gpu/drm/i2c/tda9950.c
+++ b/drivers/gpu/drm/i2c/tda9950.c
@@ -307,7 +307,7 @@ static void tda9950_release(struct tda9950_priv *priv)
 	/* Wait up to .5s for it to signal non-busy */
 	do {
 		csr = tda9950_read(client, REG_CSR);
-		if (!(csr & CSR_BUSY) || --timeout)
+		if (!(csr & CSR_BUSY) || !--timeout)
 	} while (1);

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