linux-kernel - [PATCH 4.19 104/421] pata_ep93xx: fix deferred probing

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Message-Id: <20210719144950.200600455@linuxfoundation.org>
Date:   Mon, 19 Jul 2021 16:48:35 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sergey Shtylyov <s.shtylyov@...russia.ru>,
        Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 104/421] pata_ep93xx: fix deferred probing

From: Sergey Shtylyov <s.shtylyov@...russia.ru>

[ Upstream commit 5c8121262484d99bffb598f39a0df445cecd8efb ]

The driver overrides the error codes returned by platform_get_irq() to
-ENXIO, so if it returns -EPROBE_DEFER, the driver would fail the probe
permanently instead of the deferred probing.  Propagate the error code
upstream, as it should have been done from the start...

Fixes: 2fff27512600 ("PATA host controller driver for ep93xx")
Signed-off-by: Sergey Shtylyov <s.shtylyov@...russia.ru>
Link: https://lore.kernel.org/r/509fda88-2e0d-2cc7-f411-695d7e94b136@omprussia.ru
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ata/pata_ep93xx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/pata_ep93xx.c b/drivers/ata/pata_ep93xx.c
index cc6d06c1b2c7..7ce62cdb63a5 100644
--- a/drivers/ata/pata_ep93xx.c
+++ b/drivers/ata/pata_ep93xx.c
@@ -927,7 +927,7 @@ static int ep93xx_pata_probe(struct platform_device *pdev)
 	/* INT[3] (IRQ_EP93XX_EXT3) line connected as pull down */
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		err = -ENXIO;
+		err = irq;
 		goto err_rel_gpio;
 	}
 
-- 
2.30.2