diff options
| author | Jean Delvare <khali@linux-fr.org> | 2010-11-05 18:51:34 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-11-09 23:04:52 +0000 |
| commit | 69669455b049c0f1f04bb306625c5d4db6838b11 (patch) | |
| tree | 736f897e4d390507cab67bda9337a42f58e5179e /drivers/gpu/drm/i915/intel_i2c.c | |
| parent | 3f8ff0e72d75fdbe7f2cba2c4015fd9fdd9e13fd (diff) | |
drm/i915: Fix I2C adapter registration
Fix many small bugs in I2C adapter registration:
* Properly reject unsupported GPIO pin.
* Fix improper use of I2C_NAME_SIZE (which is the size of
i2c_client.name, not i2c_adapter.name.)
* Prefix adapter names with "i915" so that the user knows what the
I2C channel is connected to.
* Fix swapped characters in the string used to name the GPIO-based
adapter.
* Add missing comma in gmbus name table.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_i2c.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index 2be4f728ed0..3dba086e7ee 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -160,7 +160,7 @@ intel_gpio_create(struct drm_i915_private *dev_priv, u32 pin) }; struct intel_gpio *gpio; - if (pin < 1 || pin > 7) + if (pin >= ARRAY_SIZE(map_pin_to_reg) || !map_pin_to_reg[pin]) return NULL; gpio = kzalloc(sizeof(struct intel_gpio), GFP_KERNEL); @@ -172,7 +172,8 @@ intel_gpio_create(struct drm_i915_private *dev_priv, u32 pin) gpio->reg += PCH_GPIOA - GPIOA; gpio->dev_priv = dev_priv; - snprintf(gpio->adapter.name, I2C_NAME_SIZE, "GPIO%c", "?BACDEF?"[pin]); + snprintf(gpio->adapter.name, sizeof(gpio->adapter.name), + "i915 GPIO%c", "?BACDE?F"[pin]); gpio->adapter.owner = THIS_MODULE; gpio->adapter.algo_data = &gpio->algo; gpio->adapter.dev.parent = &dev_priv->dev->pdev->dev; @@ -349,7 +350,7 @@ int intel_setup_gmbus(struct drm_device *dev) "panel", "dpc", "dpb", - "reserved" + "reserved", "dpd", }; struct drm_i915_private *dev_priv = dev->dev_private; @@ -366,8 +367,8 @@ int intel_setup_gmbus(struct drm_device *dev) bus->adapter.owner = THIS_MODULE; bus->adapter.class = I2C_CLASS_DDC; snprintf(bus->adapter.name, - I2C_NAME_SIZE, - "gmbus %s", + sizeof(bus->adapter.name), + "i915 gmbus %s", names[i]); bus->adapter.dev.parent = &dev->pdev->dev; |