[15/17] ARM: rpc: check device_register return code in ecard_probe

Message ID 1349195816-2225-16-git-send-email-arnd@arndb.de
State Accepted
Commit 5f07809e93b4c05516d85a3f2770b1a77115eb70
Headers show

Commit Message

Arnd Bergmann Oct. 2, 2012, 4:36 p.m.
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 <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-rpc/ecard.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Patch

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;