linux-kernel - [PATCH AUTOSEL 5.19 27/33] fbdev: omapfb: Fix tests for platform_get

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Date:   Tue, 30 Aug 2022 13:18:18 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Yu Zhe <yuzhe@...china.com>, Helge Deller <deller@....de>,
        Sasha Levin <sashal@...nel.org>, arnd@...db.de,
        tony@...mide.com, b.zolnierkie@...sung.com,
        jiapeng.chong@...ux.alibaba.com, guozhengkui@...o.com,
        gustavoars@...nel.org, linux-fbdev@...r.kernel.org,
        linux-omap@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.19 27/33] fbdev: omapfb: Fix tests for platform_get_irq() failure

From: Yu Zhe <yuzhe@...china.com>

[ Upstream commit acf4c6205e862304681234a6a4375b478af12552 ]

The platform_get_irq() returns negative error codes.  It can't actually
return zero.

Signed-off-by: Yu Zhe <yuzhe@...china.com>
Signed-off-by: Helge Deller <deller@....de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/video/fbdev/omap/omapfb_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c
index 292fcb0a24fc9..6ff237cee7f87 100644
--- a/drivers/video/fbdev/omap/omapfb_main.c
+++ b/drivers/video/fbdev/omap/omapfb_main.c
@@ -1643,14 +1643,14 @@ static int omapfb_do_probe(struct platform_device *pdev,
 		goto cleanup;
 	}
 	fbdev->int_irq = platform_get_irq(pdev, 0);
-	if (!fbdev->int_irq) {
+	if (fbdev->int_irq < 0) {
 		dev_err(&pdev->dev, "unable to get irq\n");
 		r = ENXIO;
 		goto cleanup;
 	}
 
 	fbdev->ext_irq = platform_get_irq(pdev, 1);
-	if (!fbdev->ext_irq) {
+	if (fbdev->ext_irq < 0) {
 		dev_err(&pdev->dev, "unable to get irq\n");
 		r = ENXIO;
 		goto cleanup;
-- 
2.35.1