EDAC/xgene: Fix deferred probing

commit dfd0dfb9a7cc04acf93435b440dd34c2ca7b4424 upstream.

The driver overrides error codes returned by platform_get_irq_optional()
to -EINVAL 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: 0d4429301c4a ("EDAC: Add APM X-Gene SoC EDAC driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220124185503.6720-3-s.shtylyov@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/edac/xgene_edac.c b/drivers/edac/xgene_edac.c
index 2ccd1db..7197f9f 100644 (file)
--- a/drivers/edac/xgene_edac.c
+++ b/drivers/edac/xgene_edac.c
@@ -1919,7 +1919,7 @@ static int xgene_edac_probe(struct platform_device *pdev)
                        irq = platform_get_irq_optional(pdev, i);
                        if (irq < 0) {
                                dev_err(&pdev->dev, "No IRQ resource\n");
-                               rc = -EINVAL;
+                               rc = irq;
                                goto out_err;
                        }
                        rc = devm_request_irq(&pdev->dev, irq,