[PATCH v1 1/1] spi: Return deferred probe error when controller isn't yet available

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mark Brown <broonie@kernel.org>,
	linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 1/1] spi: Return deferred probe error when controller isn't yet available
Date: Sun, 10 Jul 2022 00:29:56 +0300	[thread overview]
Message-ID: <20220709212956.25530-1-andriy.shevchenko@linux.intel.com> (raw)

If the controller is not available, it might be in the future and
we would like to re-probe the peripheral again. For that purpose
return deferred probe.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215993
Fixes: 87e59b36e5e2 ("spi: Support selection of the index of the ACPI Spi Resource before alloc")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/spi/spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 9b080dafa52c..119a2de8a8cb 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2478,7 +2478,7 @@ static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)
 
 				ctlr = acpi_spi_find_controller_by_adev(adev);
 				if (!ctlr)
-					return -ENODEV;
+					return -EPROBE_DEFER;
 
 				lookup->ctlr = ctlr;
 			}
-- 
2.35.1

