ARM: PL08x: allow dma_set_runtime_config() to return errors

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There are cases in dma_set_runtime_config() where we fail to perform
the requested action - and we just issue a KERN_ERR message in that
case.  We have the facility to return an error to the caller, so that
is what we should do.

When we encounter an error due to invalid parameters, we should not
modify driver state.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Russell King - ARM Linux 2011-01-03 22:45:57 +00:00 • committed by Dan Williams

parent c370e594ef

commit f0fd944625

1 changed files with 13 additions and 10 deletions

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drivers/dma/amba-pl08x.c

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