From: Johan Hovold johan@kernel.org
[ Upstream commit 229e73d46994f15314f58b2d39bf952111d89193 ]
Make sure to free the platform device in the unlikely event that registration fails.
Fixes: 7a67832c7e44 ("libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option") Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Borislav Petkov bp@suse.de Link: https://lore.kernel.org/r/20220620140723.9810-1-johan@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kernel/pmem.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/pmem.c b/arch/x86/kernel/pmem.c index 3fe690067802..ada7c077ec2f 100644 --- a/arch/x86/kernel/pmem.c +++ b/arch/x86/kernel/pmem.c @@ -27,6 +27,11 @@ static __init int register_e820_pmem(void) * simply here to trigger the module to load on demand. */ pdev = platform_device_alloc("e820_pmem", -1); - return platform_device_add(pdev); + + rc = platform_device_add(pdev); + if (rc) + platform_device_put(pdev); + + return rc; } device_initcall(register_e820_pmem);