Re: [PATCH v10 2/2] tty/serial: Add Spreadtrum sc9836-uart driver support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




On Fri, Jan 30, 2015 at 10:32:54AM -0500, Peter Hurley wrote:
> Before you say consistency, I think you should look at the stats below.
> IOW, if you want to change the error code return from probe() for
> consistency's sake, a tree-wide patch would be the appropriate way.

Now look outside the serial driver sub-tree.

There are 1234 instances of platform_get_resource(, IORESOURCE_MEM, ) in
the drivers/ sub-tree, with 700 instances of devm_ioremap_resource()
being used there.  Of the devm_ioremap_resource() instances:

- 555 use platform_get_resource() in the preceding two lines - which is
  not enough to do anything but rely on the -EINVAL return value.
- 16 mention ENODEV in the preceding three lines.

There are 132 which use platform_get_resource() and return ENODEV within
the following three lines (which may intersect with the above 16 number)
and 88 which use EINVAL.

So, there are in total 643 instances where a missing resource returns
EINVAL, and between 132 and 148 instances which return ENODEV.

Yes, 643 + 148 isn't 1234, but I'm not going to read through all 1234
locations just for the sake of this thread.   What's clear though is that
more than 50% of sites using platform_get_resource(, IORESOURCE_MEM, )
return EINVAL for the lack of a resource.

-- 
FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]
  Powered by Linux