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[5.16,0482/1039] powerpc/powermac: Add additional missing lockdep_register_key()

Message ID 20220124184141.475710269@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Jan. 24, 2022, 6:37 p.m. UTC 
From: Christophe Leroy <christophe.leroy@csgroup.eu>

[ Upstream commit b149d5d45ac9171ed699a256f026c8ebef901112 ]

Commit df1f679d19ed ("powerpc/powermac: Add missing
lockdep_register_key()") fixed a problem that was causing a WARNING.

There are two other places in the same file with the same problem
originating from commit 9e607f72748d ("i2c_powermac: shut up lockdep
warning").

Add missing lockdep_register_key()

Fixes: 9e607f72748d ("i2c_powermac: shut up lockdep warning")
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Depends-on: df1f679d19ed ("powerpc/powermac: Add missing lockdep_register_key()")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200055
Link: https://lore.kernel.org/r/2c7e421874e21b2fb87813d768cf662f630c2ad4.1638984999.git.christophe.leroy@csgroup.eu
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/powerpc/platforms/powermac/low_i2c.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c
index f77a59b5c2e1a..09bfe4b8f25aa 100644
--- a/arch/powerpc/platforms/powermac/low_i2c.c
+++ b/arch/powerpc/platforms/powermac/low_i2c.c
@@ -810,6 +810,7 @@  static void __init pmu_i2c_probe(void)
 		bus->hostdata = bus + 1;
 		bus->xfer = pmu_i2c_xfer;
 		mutex_init(&bus->mutex);
+		lockdep_register_key(&bus->lock_key);
 		lockdep_set_class(&bus->mutex, &bus->lock_key);
 		bus->flags = pmac_i2c_multibus;
 		list_add(&bus->link, &pmac_i2c_busses);
@@ -933,6 +934,7 @@  static void __init smu_i2c_probe(void)
 		bus->hostdata = bus + 1;
 		bus->xfer = smu_i2c_xfer;
 		mutex_init(&bus->mutex);
+		lockdep_register_key(&bus->lock_key);
 		lockdep_set_class(&bus->mutex, &bus->lock_key);
 		bus->flags = 0;
 		list_add(&bus->link, &pmac_i2c_busses);