linux-kernel - [PATCH 3.16 081/305] spi: sh-msiof: fix deferred probing

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Message-ID: <lsq.1549201508.442638535@decadent.org.uk>
Date:   Sun, 03 Feb 2019 14:45:08 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Sergei Shtylyov" <sergei.shtylyov@...entembedded.com>,
        "Mark Brown" <broonie@...nel.org>
Subject: [PATCH 3.16 081/305] spi: sh-msiof: fix deferred probing

3.16.63-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>

commit f34c6e6257aa477cdfe7e9bbbecd3c5648ecda69 upstream.

Since commit 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq")
platform_get_irq() can return -EPROBE_DEFER. However, the driver overrides
an error returned by that function with -ENOENT which breaks the deferred
probing. Propagate upstream an error code returned by platform_get_irq()
and remove the bogus "platform" from the error message, while at it...

Fixes: 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/spi/spi-sh-msiof.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -766,8 +766,8 @@ static int sh_msiof_spi_probe(struct pla
 
 	i = platform_get_irq(pdev, 0);
 	if (i < 0) {
-		dev_err(&pdev->dev, "cannot get platform IRQ\n");
-		ret = -ENOENT;
+		dev_err(&pdev->dev, "cannot get IRQ\n");
+		ret = i;
 		goto err1;
 	}