Messages in this thread | | | Date | Mon, 27 Mar 2017 13:41:05 +0100 | From | Lee Jones <> | Subject | Re: [PATCH v1] mfd: core: Preserve PLATFORM_DEVID_NONE |
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On Sun, 26 Mar 2017, Andy Shevchenko wrote:
> On Fri, 2017-03-24 at 11:35 +0000, Lee Jones wrote: > > On Thu, 23 Mar 2017, Andy Shevchenko wrote: > > > > > On Thu, 2017-03-23 at 11:21 +0000, Lee Jones wrote: > > > > On Thu, 16 Mar 2017, Andy Shevchenko wrote: > > > > > > > > > There is a potential flaw if cell has id > 0 and is going to be > > > > > registered with PLATFORM_DEVID_NONE. > > > > > > > > > > Ignore if PLATFORM_DEVID_NONE is supplied. > > > > > > > > This is a substantial change to a pretty tried and tested piece of > > > > sub-system code. Can you put some more meat on the bones in the > > > > commit log, and include examples. > > > > > > Example in pseudo code: > > > > > > cells = { > > > [0] = { .id = 0, .name = "moduleX", }, > > > [1] = { .id = 1, .name = "moduleY", }, > > > [2] = { .id = 2, .name = "moduleZ", }, > > > ... > > > }; > > > > > > mfd_add_devices(..., PLATFORM_DEVID_NONE, cells, ARRAY_SIZE(cells), > > > ...); > > > > > > Output (names of the devices in the drivers): > > > "moduleX" > > > "moduleY.0" > > > "moduleX.1" > > > > > > Desired output: > > > "moduleX" > > > "moduleY" > > > "moduleZ" > > > > Then what would be your reason for populating the 'id' attribute? > > That's a gray area. If I remember correctly I come to above patch > through looking some incremental change. > > I'm fine with no patch applied if this is documented somewhere, > otherwise we might update documentation to cover such cases explicitly.
I'd be happy to review any proposal you put forward. :)
> > > Is it by design? > > > > > > > > > > > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.co > > > > > m> > > > > > --- > > > > > drivers/mfd/mfd-core.c | 2 +- > > > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > > > > > diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c > > > > > index c57e407020f1..c9583f895058 100644 > > > > > --- a/drivers/mfd/mfd-core.c > > > > > +++ b/drivers/mfd/mfd-core.c > > > > > @@ -149,7 +149,7 @@ static int mfd_add_device(struct device > > > > > *parent, > > > > > int id, > > > > > int platform_id; > > > > > int r; > > > > > > > > > > - if (id == PLATFORM_DEVID_AUTO) > > > > > + if (id < 0) > > > > > platform_id = id; > > > > > else > > > > > platform_id = id + cell->id; > > > > > > > > > > > > >
-- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
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