diff options
| author | Ben Widawsky <benjamin.widawsky@intel.com> | 2013-09-12 22:28:29 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-09-13 14:56:15 +0200 |
| commit | 33618ea5e0e2ccd00331fa169145894b9c5dcffe (patch) | |
| tree | 4d5f6d44bc4fd5b81b8e7a8fd75fbdaa29a16107 /drivers/gpu | |
| parent | 1c3dcd1cf66d078bc273275c754000ba0d397ac0 (diff) | |
drm/i915: Fix l3 parity user buffer offset
The buf pointer used during l3_write is just char *, therefore it does
not require the silly any addition of offset.
v2: Also fix i915_l3_read with a suggested logic from Ville
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_sysfs.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 9070f503d332..d572435cfbe7 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -127,6 +127,8 @@ i915_l3_read(struct file *filp, struct kobject *kobj, if (ret) return ret; + count = min_t(int, GEN7_L3LOG_SIZE-offset, count); + ret = i915_mutex_lock_interruptible(drm_dev); if (ret) return ret; @@ -134,14 +136,14 @@ i915_l3_read(struct file *filp, struct kobject *kobj, misccpctl = I915_READ(GEN7_MISCCPCTL); I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); - for (i = offset; count >= 4 && i < GEN7_L3LOG_SIZE; i += 4, count -= 4) - *((uint32_t *)(&buf[i])) = I915_READ(GEN7_L3LOG_BASE + i); + for (i = 0; i < count; i += 4) + *((uint32_t *)(&buf[i])) = I915_READ(GEN7_L3LOG_BASE + offset + i); I915_WRITE(GEN7_MISCCPCTL, misccpctl); mutex_unlock(&drm_dev->struct_mutex); - return i - offset; + return i; } static ssize_t @@ -186,9 +188,7 @@ i915_l3_write(struct file *filp, struct kobject *kobj, if (temp) dev_priv->l3_parity.remap_info = temp; - memcpy(dev_priv->l3_parity.remap_info + (offset/4), - buf + (offset/4), - count); + memcpy(dev_priv->l3_parity.remap_info + (offset/4), buf, count); i915_gem_l3_remap(drm_dev); |