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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-10-25 15:43:44 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2019-01-03 08:32:42 +0000 |
| commit | 10628e3ecf544fa2e4e24f8e112d95c37884dc98 (patch) | |
| tree | 55aae35440f8a50427a4c42433e2f7ab2493d86a /drivers/mfd/ab8500-core.c | |
| parent | a54e950fdec3cde98caa04bc601cbdc95d0d319c (diff) | |
| download | lwn-10628e3ecf544fa2e4e24f8e112d95c37884dc98.tar.gz lwn-10628e3ecf544fa2e4e24f8e112d95c37884dc98.zip | |
mfd: ab8500-core: Return zero in get_register_interruptible()
This function is supposed to return zero on success or negative error
codes on error. Unfortunately, there is a bug so it sometimes returns
non-zero, positive numbers on success.
I noticed this bug during review and I can't test it. It does appear
that the return is sometimes propogated back to _regmap_read() where all
non-zero returns are treated as failure so this may affect run time.
Fixes: 47c1697508f2 ("mfd: Align ab8500 with the abx500 interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/ab8500-core.c')
| -rw-r--r-- | drivers/mfd/ab8500-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index 30d09d177171..11ab17f64c64 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -261,7 +261,7 @@ static int get_register_interruptible(struct ab8500 *ab8500, u8 bank, mutex_unlock(&ab8500->lock); dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret); - return ret; + return (ret < 0) ? ret : 0; } static int ab8500_get_register(struct device *dev, u8 bank, |