[ Upstream commit 24d48a61f2666630da130cc2ec2e526eacf229e3 ]
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:
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||
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.. | ||
agp | ||
hw_random | ||
ipmi | ||
mwave | ||
pcmcia | ||
tpm | ||
xilinx_hwicap | ||
xillybus | ||
apm-emulation.c | ||
applicom.c | ||
applicom.h | ||
bfin-otp.c | ||
bsr.c | ||
ds1302.c | ||
ds1620.c | ||
dsp56k.c | ||
dtlk.c | ||
efirtc.c | ||
generic_nvram.c | ||
genrtc.c | ||
hangcheck-timer.c | ||
hpet.c | ||
Kconfig | ||
lp.c | ||
Makefile | ||
mbcs.c | ||
mbcs.h | ||
mem.c | ||
misc.c | ||
mmtimer.c | ||
mspec.c | ||
nsc_gpio.c | ||
nvram.c | ||
nwbutton.c | ||
nwbutton.h | ||
nwflash.c | ||
pc8736x_gpio.c | ||
ppdev.c | ||
ps3flash.c | ||
random.c | ||
raw.c | ||
rtc.c | ||
scx200_gpio.c | ||
snsc.c | ||
snsc.h | ||
snsc_event.c | ||
sonypi.c | ||
tb0219.c | ||
tile-srom.c | ||
tlclk.c | ||
toshiba.c | ||
ttyprintk.c | ||
uv_mmtimer.c | ||
virtio_console.c |