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| author | Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> | 2016-11-12 17:04:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-19 20:17:23 +0100 |
| commit | 45611fb9e0afe4d9ee1236ab68d3f51c7edc55f9 (patch) | |
| tree | 95688a14d4ffedd8deca6f9f3f5464c56071be19 /drivers | |
| parent | ef6eadbf7b169d0eb1ee7c82431443802f97d189 (diff) | |
| download | linux-stable-45611fb9e0afe4d9ee1236ab68d3f51c7edc55f9.tar.gz linux-stable-45611fb9e0afe4d9ee1236ab68d3f51c7edc55f9.tar.bz2 linux-stable-45611fb9e0afe4d9ee1236ab68d3f51c7edc55f9.zip | |
pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE
commit 5d7400c4acbf7fe633a976a89ee845f7333de3e4 upstream.
Always stating PIN_CONFIG_BIAS_DISABLE is supported gives untrue output
when examining /sys/kernel/debug/pinctrl/e6060000.pfc/pinconf-pins if
the operation get_bias() is implemented but the pin is not handled by
the get_bias() implementation. In that case the output will state that
"input bias disabled" indicating that this pin has bias control
support.
Make support for PIN_CONFIG_BIAS_DISABLE depend on that the pin either
supports SH_PFC_PIN_CFG_PULL_UP or SH_PFC_PIN_CFG_PULL_DOWN. This also
solves the issue where SoC specific implementations print error messages
if their particular implementation of {set,get}_bias() is called with a
pin it does not know about.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/sh-pfc/pinctrl.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pinctrl/sh-pfc/pinctrl.c b/drivers/pinctrl/sh-pfc/pinctrl.c index 863c3e30ce05..50f2014fed55 100644 --- a/drivers/pinctrl/sh-pfc/pinctrl.c +++ b/drivers/pinctrl/sh-pfc/pinctrl.c @@ -483,7 +483,8 @@ static bool sh_pfc_pinconf_validate(struct sh_pfc *pfc, unsigned int _pin, switch (param) { case PIN_CONFIG_BIAS_DISABLE: - return true; + return pin->configs & + (SH_PFC_PIN_CFG_PULL_UP | SH_PFC_PIN_CFG_PULL_DOWN); case PIN_CONFIG_BIAS_PULL_UP: return pin->configs & SH_PFC_PIN_CFG_PULL_UP; |