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| author |   Jonas Aaberg <jonas.aberg@stericsson.com> | 2012-04-17 16:10:46 +0200 |
|---|---|---|
| committer |   Lee Jones <lee.jones@linaro.org> | 2013-03-07 12:27:10 +0800 |
| commit | d89cc5aad109d20d10d228ba52d86e0adca62461 (patch) | |
| tree | abcd430bbf213c291184d405d6bcfc86a80d07e0 /drivers/mfd/ab8500-gpadc.c | |
| parent | mfd: ab8500-gpadc: Implemented suspend/resume (diff) | |
| download | linux-dev-d89cc5aad109d20d10d228ba52d86e0adca62461.tar.xz linux-dev-d89cc5aad109d20d10d228ba52d86e0adca62461.zip | |
mfd: ab8500-gpadc: Reread on failure
Reread the gpadc once upon failure.
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Mattias WALLIN <mattias.wallin@stericsson.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/ab8500-gpadc.c')
| -rw-r--r-- | drivers/mfd/ab8500-gpadc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c index 9ed3afc31d11..7f39479c1afc 100644 --- a/drivers/mfd/ab8500-gpadc.c +++ b/drivers/mfd/ab8500-gpadc.c @@ -256,6 +256,11 @@ int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel) int voltage; ad_value = ab8500_gpadc_read_raw(gpadc, channel); + + /* On failure retry a second time */ + if (ad_value < 0) + ad_value = ab8500_gpadc_read_raw(gpadc, channel); + if (ad_value < 0) { dev_err(gpadc->dev, "GPADC raw value failed ch: %d\n", channel); return ad_value; |