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powerpc/fsl: fix compiler warning in fsl_wakeup_sys_init()

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Commit c93bd17541 ("powerpc/fsl: move to use bus_get_dev_root()")
changed to use bus_get_dev_root() but didn't consider that the function
can fail and return an uninitialized value of ret (hint, the function
can never fail, but the compiler doesn't know that.)

Fix this up by setting ret to -EINVAL just in case something really goes
wrong with the call to bus_get_dev_root().

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: linuxppc-dev@lists.ozlabs.org
Fixes: c93bd17541 ("powerpc/fsl: move to use bus_get_dev_root()")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202303280045.4oaaezcn-lkp@intel.com/
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230327181606.1424846-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-03-27 20:16:06 +02:00
parent 5c9a27df4e
commit cf34b880a6
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c
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@ -117,7 +117,7 @@ static struct device_attribute mpic_attributes = __ATTR(timer_wakeup, 0644,
static int __init fsl_wakeup_sys_init(void)
{
struct device *dev_root;
int ret;
int ret = -EINVAL;
fsl_wakeup = kzalloc(sizeof(struct fsl_mpic_timer_wakeup), GFP_KERNEL);
if (!fsl_wakeup)