device_register is marked __must_check, so we better propagate the error
value by returning it from ecard_probe.
Without this patch, building rpc_defconfig results in:
arch/arm/mach-rpc/ecard.c: In function 'ecard_probe':
arch/arm/mach-rpc/ecard.c:963:17: warning: ignoring return value of
'device_register', declared with attribute warn_unused_result [-Wunused-result]
Signed-off-by: Arnd Bergmann <a...@arndb.de>
Cc: Russell King <rmk+ker...@arm.linux.org.uk>
---
arch/arm/mach-rpc/ecard.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-rpc/ecard.c b/arch/arm/mach-rpc/ecard.c
index b91bc87..fcb1d59 100644
--- a/arch/arm/mach-rpc/ecard.c
+++ b/arch/arm/mach-rpc/ecard.c
@@ -960,7 +960,9 @@ static int __init ecard_probe(int slot, unsigned irq,
card_type_t type)
*ecp = ec;
slot_to_expcard[slot] = ec;
- device_register(&ec->dev);
+ rc = device_register(&ec->dev);
+ if (rc)
+ goto nodev;
return 0;
--
1.7.10
--
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