On 01/12/16 13:50, William Breathitt Gray wrote: > On Thu, Dec 01, 2016 at 12:30:55PM +0000, David Howells wrote: >> When the kernel is running in secure boot mode, we lock down the kernel to >> prevent userspace from modifying the running kernel image. Whilst this >> includes prohibiting access to things like /dev/mem, it must also prevent >> access by means of configuring driver modules in such a way as to cause a >> device to access or modify the kernel image. >> >> To this end, annotate module_param* statements that refer to hardware >> configuration and indicate for future reference what type of parameter they >> specify. The parameter parser in the core sees this information and can >> skip such parameters with an error message if the kernel is locked down. >> The module initialisation then runs as normal, but just sees whatever the >> default values for those parameters is. >> >> Note that we do still need to do the module initialisation because some >> drivers have viable defaults set in case parameters aren't specified and >> some drivers support automatic configuration (e.g. PNP or PCI) in addition >> to manually coded parameters. >> >> This patch annotates drivers in drivers/iio/. >> >> Suggested-by: One Thousand Gnomes <gnomes@xxxxxxxxxxxxxxxxxxx> >> Signed-off-by: David Howells <dhowells@xxxxxxxxxx> >> cc: William Breathitt Gray <vilhelm.gray@xxxxxxxxx> >> cc: Jonathan Cameron <jic23@xxxxxxxxxx> >> cc: linux-iio@xxxxxxxxxxxxxxx > > Acked-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx> Hi David, I'm on a train so can't check the original thread right now (and will probably forget to do so later!). I am guessing the new functions are introduced earlier in the series? Hence for now I'll assume you want to merge this lot in one go. Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx> Shout if you want me to take this via the IIO tree after the merge window closes. Thanks, Jonathan > >> --- >> >> drivers/iio/adc/stx104.c | 2 +- >> drivers/iio/dac/cio-dac.c | 2 +- >> 2 files changed, 2 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/iio/adc/stx104.c b/drivers/iio/adc/stx104.c >> index 7e3645749eaf..a805bd543acb 100644 >> --- a/drivers/iio/adc/stx104.c >> +++ b/drivers/iio/adc/stx104.c >> @@ -49,7 +49,7 @@ >> >> static unsigned int base[max_num_isa_dev(STX104_EXTENT)]; >> static unsigned int num_stx104; >> -module_param_array(base, uint, &num_stx104, 0); >> +module_param_hw_array(base, uint, ioport, &num_stx104, 0); >> MODULE_PARM_DESC(base, "Apex Embedded Systems STX104 base addresses"); >> >> /** >> diff --git a/drivers/iio/dac/cio-dac.c b/drivers/iio/dac/cio-dac.c >> index 5a743e2a779d..dac086129edf 100644 >> --- a/drivers/iio/dac/cio-dac.c >> +++ b/drivers/iio/dac/cio-dac.c >> @@ -39,7 +39,7 @@ >> >> static unsigned int base[max_num_isa_dev(CIO_DAC_EXTENT)]; >> static unsigned int num_cio_dac; >> -module_param_array(base, uint, &num_cio_dac, 0); >> +module_param_hw_array(base, uint, ioport, &num_cio_dac, 0); >> MODULE_PARM_DESC(base, "Measurement Computing CIO-DAC base addresses"); >> >> /** >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
