From: Sergey Shtylyov <s.shtylyov@omp.ru>
Date: Mon, 24 Jan 2022 18:55:02 +0000 (+0300)
Subject: EDAC/altera: Fix deferred probing
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=2a12faf55baed67c343e8bc5f1e54d2a5b4336a4;p=linux-block.git

EDAC/altera: Fix deferred probing

commit 279eb8575fdaa92c314a54c0d583c65e26229107 upstream.

The driver overrides the error codes returned by platform_get_irq() to
-ENODEV for some strange reason, so if it returns -EPROBE_DEFER, the
driver will fail the probe permanently instead of the deferred probing.
Switch to propagating the proper error codes to platform driver code
upwards.

  [ bp: Massage commit message. ]

Fixes: 71bcada88b0f ("edac: altera: Add Altera SDRAM EDAC support")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220124185503.6720-2-s.shtylyov@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index e91cf1147a4e..be38fd71f731 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -349,7 +349,7 @@ static int altr_sdram_probe(struct platform_device *pdev)
 	if (irq < 0) {
 		edac_printk(KERN_ERR, EDAC_MC,
 			    "No irq %d in DT\n", irq);
-		return -ENODEV;
+		return irq;
 	}
 
 	/* Arria10 has a 2nd IRQ */