diff options
| -rw-r--r-- | drivers/platform/mellanox/mlxreg-hotplug.c | 14 | ||||
| -rw-r--r-- | include/linux/platform_data/mlxreg.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index 706207d192ae..77be37a1fbcf 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -504,6 +504,20 @@ static int mlxreg_hotplug_set_irq(struct mlxreg_hotplug_priv_data *priv) item = pdata->items; for (i = 0; i < pdata->counter; i++, item++) { + if (item->capability) { + /* + * Read group capability register to get actual number + * of interrupt capable components and set group mask + * accordingly. + */ + ret = regmap_read(priv->regmap, item->capability, + ®val); + if (ret) + goto out; + + item->mask = GENMASK((regval & item->mask) - 1, 0); + } + /* Clear group presense event. */ ret = regmap_write(priv->regmap, item->reg + MLXREG_HOTPLUG_EVENT_OFF, 0); diff --git a/include/linux/platform_data/mlxreg.h b/include/linux/platform_data/mlxreg.h index 6d54fe3bcac9..b8da8aef2446 100644 --- a/include/linux/platform_data/mlxreg.h +++ b/include/linux/platform_data/mlxreg.h @@ -101,6 +101,7 @@ struct mlxreg_core_data { * @aggr_mask: group aggregation mask; * @reg: group interrupt status register; * @mask: group interrupt mask; + * @capability: group capability register; * @cache: last status value for elements fro the same group; * @count: number of available elements in the group; * @ind: element's index inside the group; @@ -112,6 +113,7 @@ struct mlxreg_core_item { u32 aggr_mask; u32 reg; u32 mask; + u32 capability; u32 cache; u8 count; u8 ind; |