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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH] include: linux/iopoll.h: silence warning when timeout_us contains *
Date: Mon,  9 Jan 2023 17:00:57 +0100	[thread overview]
Message-ID: <20230109160057.2223325-1-a.fatoum@pengutronix.de> (raw)

We evaluate timeout_us for truthiness to determine whether we are
entering an infinite poll loop. When timeout_us contains a
multiplication, GCC will warn about it and suggest replacing the *
with &&. Silence this warning by comparing directly against 0.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 include/linux/iopoll.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/iopoll.h b/include/linux/iopoll.h
index 8bf912e173b3..b8c55583f97f 100644
--- a/include/linux/iopoll.h
+++ b/include/linux/iopoll.h
@@ -32,13 +32,13 @@
 #define read_poll_timeout(op, val, cond, timeout_us, args...)	\
 ({ \
 	uint64_t start; \
-	if (!IN_PBL && timeout_us) \
+	if (!IN_PBL && timeout_us != 0) \
 		start = get_time_ns(); \
 	for (;;) { \
 		(val) = op(args); \
 		if (cond) \
 			break; \
-		if (!IN_PBL && timeout_us && \
+		if (!IN_PBL && timeout_us != 0 && \
 		    is_timeout(start, ((timeout_us) * USECOND))) { \
 			(val) = op(args); \
 			break; \
-- 
2.30.2




             reply	other threads:[~2023-01-09 16:02 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-09 16:00 Ahmad Fatoum [this message]
2023-01-09 18:02 ` [PATCH] fixup! " Ahmad Fatoum
2023-01-10 14:42   ` Sascha Hauer
2023-01-10 14:41 ` [PATCH] " Sascha Hauer
2023-01-10 16:40   ` Ahmad Fatoum
2023-01-11  7:39     ` Sascha Hauer

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