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Subject[PATCH 4.9 055/104] MIPS: Lantiq: Fix another request_mem_region() return code check
4.9-stable review patch.  If anyone has any objections, please let me know.


From: Arnd Bergmann <>

[ Upstream commit 98ea51cb0c8ce009d9da1fd7b48f0ff1d7a9bbb0 ]

Hauke already fixed a couple of them, but one instance remains
that checks for a negative integer when it should check
for a NULL pointer:

arch/mips/lantiq/xway/sysctrl.c: In function 'ltq_soc_init':
arch/mips/lantiq/xway/sysctrl.c:473:19: error: ordered comparison of pointer with integer zero [-Werror=extra]

Fixes: 6e807852676a ("MIPS: Lantiq: Fix check for return value of request_mem_region()")
Signed-off-by: Arnd Bergmann <>
Cc: John Crispin <>
Signed-off-by: Ralf Baechle <>
Signed-off-by: Sasha Levin <>
Signed-off-by: Greg Kroah-Hartman <>
arch/mips/lantiq/xway/sysctrl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/mips/lantiq/xway/sysctrl.c
+++ b/arch/mips/lantiq/xway/sysctrl.c
@@ -469,8 +469,8 @@ void __init ltq_soc_init(void)
panic("Failed to load xbar nodes from devicetree");
if (of_address_to_resource(np_xbar, 0, &res_xbar))
panic("Failed to get xbar resources");
- if (request_mem_region(res_xbar.start, resource_size(&res_xbar),
- < 0)
+ if (!request_mem_region(res_xbar.start, resource_size(&res_xbar),
panic("Failed to get xbar resources");

ltq_xbar_membase = ioremap_nocache(res_xbar.start,

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