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| author | Hui Wang <jason77.wang@gmail.com> | 2012-06-20 18:13:47 +0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-07-03 21:51:08 +0200 |
| commit | 18071610677fc491a226fa6d5471c89a26ce670d (patch) | |
| tree | f83b998237f11acec3bd5afb3efa6b7717037284 /drivers/pinctrl | |
| parent | 27e8461cd5906921f6faac5bcf7a6753600062d5 (diff) | |
| download | linux-18071610677fc491a226fa6d5471c89a26ce670d.tar.gz linux-18071610677fc491a226fa6d5471c89a26ce670d.tar.bz2 linux-18071610677fc491a226fa6d5471c89a26ce670d.zip | |
pinctrl: pinctrl-imx: fix map setting problem if NO_PAD_CTL is set
new_map is allocated according to map_num instead of grp->npins,
if a pin or some pins of a group has NO_PAD_CTL property, the map_num
and the grp->npin are different definitely.
When we set mapping information to the new_map[], we should skip those
pins with NO_PAD_CTL from index, otherwise it is possible the driver
will aceesss to a unallocated region.
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/pinctrl-imx.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/pinctrl/pinctrl-imx.c b/drivers/pinctrl/pinctrl-imx.c index dd6d93aa5334..2bafb5d9c712 100644 --- a/drivers/pinctrl/pinctrl-imx.c +++ b/drivers/pinctrl/pinctrl-imx.c @@ -146,7 +146,7 @@ static int imx_dt_node_to_map(struct pinctrl_dev *pctldev, struct pinctrl_map *new_map; struct device_node *parent; int map_num = 1; - int i; + int i, j; /* * first find the group of this node and check if we need create @@ -184,13 +184,14 @@ static int imx_dt_node_to_map(struct pinctrl_dev *pctldev, /* create config map */ new_map++; - for (i = 0; i < grp->npins; i++) { + for (i = j = 0; i < grp->npins; i++) { if (!(grp->configs[i] & IMX_NO_PAD_CTL)) { - new_map[i].type = PIN_MAP_TYPE_CONFIGS_PIN; - new_map[i].data.configs.group_or_pin = + new_map[j].type = PIN_MAP_TYPE_CONFIGS_PIN; + new_map[j].data.configs.group_or_pin = pin_get_name(pctldev, grp->pins[i]); - new_map[i].data.configs.configs = &grp->configs[i]; - new_map[i].data.configs.num_configs = 1; + new_map[j].data.configs.configs = &grp->configs[i]; + new_map[j].data.configs.num_configs = 1; + j++; } } |