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comedi: comedi_8254: Replace comedi_8254_init() and comedi_8254_mm_init()

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`comedi_8254_init()` and `comedi_8254_mm_init()` return `NULL` on
failure, but the failure is not necessarily due to lack of memory.
Change them to return an `ERR_PTR` value on failure and rename the
functions to make it obvious the API has changed.  `comedi_8254_init()`
has been replaced with `comedi_8254_io_alloc()`, and
`comedi_8254_mm_init()` has been replaced with `comedi_8254_mm_alloc()`.

Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20230913170712.111719-4-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott
2023-09-13 18:07:02 +01:00
committed by Greg Kroah-Hartman
parent c62f5032f7
commit fade5e5b0b
29 changed files with 179 additions and 165 deletions
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3
drivers/comedi/drivers.c
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@@ -177,7 +177,8 @@ static void comedi_device_detach_cleanup(struct comedi_device *dev)
dev->n_subdevices = 0;
}
kfree(dev->private);
kfree(dev->pacer);
if (!IS_ERR(dev->pacer))
kfree(dev->pacer);
dev->private = NULL;
dev->pacer = NULL;
dev->driver = NULL;