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| author | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2017-02-08 16:12:09 +0300 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2017-02-08 18:22:00 +0300 |
| commit | 3c779a49bd7ce6c9ecc35a679f28f94fe3cfaeab (patch) | |
| tree | a2db24065313d5907e5179baad66ab3ef5948d33 /drivers/gpu/drm | |
| parent | 038c95a313e4ca954ee5ab8a0c7559a646b0f462 (diff) | |
| download | linux-3c779a49bd7ce6c9ecc35a679f28f94fe3cfaeab.tar.xz | |
drm/i915: Avoid BIT(max) - 1 and use GENMASK(max - 1, 0)
"BIT(max) - 1" will overflow when max = 32, and GCC will complain.
We already have GENMASK for generating the mask, use it!
v2: Majestic off by one spotted (Chris)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_device_info.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fbdev.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_runtime_pm.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c index fcf81815daff..0891cc0e8626 100644 --- a/drivers/gpu/drm/i915/intel_device_info.c +++ b/drivers/gpu/drm/i915/intel_device_info.c @@ -234,7 +234,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv) * The subslice disable field is global, i.e. it applies * to each of the enabled slices. */ - sseu->subslice_mask = BIT(ss_max) - 1; + sseu->subslice_mask = GENMASK(ss_max - 1, 0); sseu->subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >> GEN8_F2_SS_DIS_SHIFT); diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index e0d9e72cf3d1..03b7391fb566 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -371,7 +371,7 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, return false; memcpy(save_enabled, enabled, count); - mask = BIT(count) - 1; + mask = GENMASK(count - 1, 0); conn_configured = 0; retry: for (i = 0; i < count; i++) { diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 66aa1bbb42f0..94df466a4801 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -1249,7 +1249,7 @@ static void vlv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv, vlv_set_power_well(dev_priv, power_well, false); } -#define POWER_DOMAIN_MASK (BIT(POWER_DOMAIN_NUM) - 1) +#define POWER_DOMAIN_MASK (GENMASK(POWER_DOMAIN_NUM - 1, 0)) static struct i915_power_well *lookup_power_well(struct drm_i915_private *dev_priv, int power_well_id) |