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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
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/comedi/comedi_8254.h
+8 -8
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@@ -136,13 +136,13 @@ void comedi_8254_set_busy(struct comedi_8254 *i8254,
void comedi_8254_subdevice_init(struct comedi_subdevice *s,
struct comedi_8254 *i8254);
struct comedi_8254 *comedi_8254_init(unsigned long iobase,
unsigned int osc_base,
unsigned int iosize,
unsigned int regshift);
struct comedi_8254 *comedi_8254_mm_init(void __iomem *mmio,
unsigned int osc_base,
unsigned int iosize,
unsigned int regshift);
struct comedi_8254 *comedi_8254_io_alloc(unsigned long iobase,
unsigned int osc_base,
unsigned int iosize,
unsigned int regshift);
struct comedi_8254 *comedi_8254_mm_alloc(void __iomem *mmio,
unsigned int osc_base,
unsigned int iosize,
unsigned int regshift);
#endif /* _COMEDI_8254_H */