Messages in this thread Patch in this message | | | From | Nicholas Mc Guire <> | Subject | [PATCH] ARM: imx: flag failure of of_iomap | Date | Sun, 8 Jul 2018 10:32:54 +0200 |
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imx_set_aips is assuming that the address returned from of_iomap is valid which it probably is in the normal case - as the call site is void error propagation is not possible but never the less at least a WARN_ON() seems warranted here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Fixes: commit e57e4ab5fc2e ("ARM: i.MX: allow disabling supervisor protect via DT") ---
Problem found by experimental coccinelle script
Patch was compiletested with: multi_v7_defconfig
Patch is against 4.18-rc3 (localversion-next is next-20180706)
arch/arm/mach-imx/cpu.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c index 32969f3..c6b1bf9 100644 --- a/arch/arm/mach-imx/cpu.c +++ b/arch/arm/mach-imx/cpu.c @@ -68,6 +68,7 @@ void __init imx_aips_allow_unprivileged_access( for_each_compatible_node(np, NULL, compat) { aips_base_addr = of_iomap(np, 0); + WARN_ON(!aips_base_addr); imx_set_aips(aips_base_addr); } } -- 2.1.4
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