[PATCH v3 11/12] mmc: sunxi: fix deferred probing

[Sergey Shtylyov]

The driver overrides the error codes and IRQ0 returned by platform_get_irq()
to -EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the error
codes upstream.  Since commit ce753ad1549c ("platform: finally disallow IRQ0
in platform_get_irq() and its ilk") IRQ0 is no longer returned by those APIs,
so we now can safely ignore it...

Fixes: 2408a08583d ("mmc: sunxi-mmc: Handle return value of platform_get_irq")
Cc: stable at vger.kernel.org # v5.19+
Signed-off-by: Sergey Shtylyov <s.shtylyov at omp.ru>
Reviewed-by: Jernej Skrabec <jernej.skrabec at gmail.com>
---
Changes in version 3:
- added the platform_get_irq() commit reference to the  patch description and
  the Cc: tag marking the 1st kernel version containing it;
- added Jernej's tag.

Changes in version 2:
- slightly reformatted the patch description.

 drivers/mmc/host/sunxi-mmc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 3db9f32d6a7b..69dcb8805e05 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -1350,8 +1350,8 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
 		return ret;
 
 	host->irq = platform_get_irq(pdev, 0);
-	if (host->irq <= 0) {
-		ret = -EINVAL;
+	if (host->irq < 0) {
+		ret = host->irq;
 		goto error_disable_mmc;
 	}
 
-- 
2.26.3