The kernel command parameter 'hpet_mmap' never takes effect due to missing '=' character in the __setup() code of hpet_mmap_enable and the memory map of the HPET registers never get expose to userspace.
Signed-off-by: Buland Singh <[email protected]> --- drivers/char/hpet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index 4a22b4b41aef..9bffcd37cc7b 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -377,7 +377,7 @@ static __init int hpet_mmap_enable(char *str) pr_info("HPET mmap %s\n", hpet_mmap_enabled ? "enabled" : "disabled"); return 1; } -__setup("hpet_mmap", hpet_mmap_enable); +__setup("hpet_mmap=", hpet_mmap_enable); static int hpet_mmap(struct file *file, struct vm_area_struct *vma) { -- 2.19.1
