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hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable
[ Upstream commit24d48a61f2
] Commit '3d035f580699 ("drivers/char/hpet.c: allow user controlled mmap for user processes")' introduced a new kernel command line parameter hpet_mmap, that is required to expose the memory map of the HPET registers to user-space. Unfortunately the kernel command line parameter 'hpet_mmap' is broken and never takes effect due to missing '=' character in the __setup() code of hpet_mmap_enable. Before this patch: dmesg output with the kernel command line parameter hpet_mmap=1 [ 0.204152] HPET mmap disabled dmesg output with the kernel command line parameter hpet_mmap=0 [ 0.204192] HPET mmap disabled After this patch: dmesg output with the kernel command line parameter hpet_mmap=1 [ 0.203945] HPET mmap enabled dmesg output with the kernel command line parameter hpet_mmap=0 [ 0.204652] HPET mmap disabled Fixes:3d035f5806
("drivers/char/hpet.c: allow user controlled mmap for user processes") Signed-off-by: Buland Singh <bsingh@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -377,7 +377,7 @@ static __init int hpet_mmap_enable(char *str)
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pr_info("HPET mmap %s\n", hpet_mmap_enabled ? "enabled" : "disabled");
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return 1;
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}
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__setup("hpet_mmap", hpet_mmap_enable);
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__setup("hpet_mmap=", hpet_mmap_enable);
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static int hpet_mmap(struct file *file, struct vm_area_struct *vma)
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{
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