On Tue, Jun 30, 2015 at 07:28:57PM +0100, Damien Lespiau wrote:
> When we have a well defined structure, it's customary to put the lock
> protecting its fields inside.
>
> Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_dma.c | 1 -
> drivers/gpu/drm/i915/i915_drv.h | 5 ++---
> drivers/gpu/drm/i915/intel_csr.c | 14 ++++++++------
> 3 files changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
> index c5349fa..1ebf0e1 100644
> --- a/drivers/gpu/drm/i915/i915_dma.c
> +++ b/drivers/gpu/drm/i915/i915_dma.c
> @@ -820,7 +820,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
> spin_lock_init(&dev_priv->mmio_flip_lock);
> mutex_init(&dev_priv->sb_lock);
> mutex_init(&dev_priv->modeset_restore_lock);
> - mutex_init(&dev_priv->csr_lock);
>
> intel_pm_setup(dev);
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index e15cb56..64c5184 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -741,6 +741,8 @@ enum csr_state {
> };
>
> struct intel_csr {
> + struct mutex lock;
There wont be a lock left after the dmc loader rework.
-Daniel
> +
> const char *fw_path;
> __be32 *dmc_payload;
> uint32_t dmc_fw_size;
> @@ -1689,9 +1691,6 @@ struct drm_i915_private {
>
> struct intel_csr csr;
>
> - /* Display CSR-related protection */
> - struct mutex csr_lock;
> -
> struct intel_gmbus gmbus[GMBUS_NUM_PINS];
>
> /** gmbus_mutex protects against concurrent usage of the single hw gmbus
> diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
> index f83a2bf..d51cbae 100644
> --- a/drivers/gpu/drm/i915/intel_csr.c
> +++ b/drivers/gpu/drm/i915/intel_csr.c
> @@ -211,9 +211,9 @@ enum csr_state intel_csr_load_status_get(struct drm_i915_private *dev_priv)
> {
> enum csr_state state;
>
> - mutex_lock(&dev_priv->csr_lock);
> + mutex_lock(&dev_priv->csr.lock);
> state = dev_priv->csr.state;
> - mutex_unlock(&dev_priv->csr_lock);
> + mutex_unlock(&dev_priv->csr.lock);
>
> return state;
> }
> @@ -228,9 +228,9 @@ enum csr_state intel_csr_load_status_get(struct drm_i915_private *dev_priv)
> void intel_csr_load_status_set(struct drm_i915_private *dev_priv,
> enum csr_state state)
> {
> - mutex_lock(&dev_priv->csr_lock);
> + mutex_lock(&dev_priv->csr.lock);
> dev_priv->csr.state = state;
> - mutex_unlock(&dev_priv->csr_lock);
> + mutex_unlock(&dev_priv->csr.lock);
> }
>
> /**
> @@ -252,7 +252,7 @@ void intel_csr_load_program(struct drm_device *dev)
> return;
> }
>
> - mutex_lock(&dev_priv->csr_lock);
> + mutex_lock(&dev_priv->csr.lock);
> fw_size = dev_priv->csr.dmc_fw_size;
> for (i = 0; i < fw_size; i++)
> I915_WRITE(CSR_PROGRAM_BASE + i * 4,
> @@ -264,7 +264,7 @@ void intel_csr_load_program(struct drm_device *dev)
> }
>
> dev_priv->csr.state = FW_LOADED;
> - mutex_unlock(&dev_priv->csr_lock);
> + mutex_unlock(&dev_priv->csr.lock);
> }
>
> static void finish_csr_load(const struct firmware *fw, void *context)
> @@ -429,6 +429,8 @@ void intel_csr_ucode_init(struct drm_device *dev)
> return;
> }
>
> + mutex_init(&dev_priv->csr.lock);
> +
> DRM_DEBUG_KMS("Loading %s\n", csr->fw_path);
>
> /*
> --
> 2.1.0
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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