diff options
| author | Dave Airlie <airlied@redhat.com> | 2012-01-05 09:55:22 +0000 |
|---|---|---|
| committer | Eugeni Dodonov <eugeni.dodonov@intel.com> | 2012-01-30 17:15:14 -0200 |
| commit | 076ba9d218da2d8020f8a08c9a1aa4d4e5e6e6eb (patch) | |
| tree | 72ebbf649b36470e204ea4265880462365213f6b | |
| parent | 4ebfe8e202451ccbc2210a606be22afc875a1706 (diff) | |
drm: introduce drm_can_sleep and use in intel/radeon drivers. (v2)v3.2.2-drm-intel-backports-2012-01-203.2-drm-intel-backports
So we have a few places where the drm drivers would like to sleep to
be nice to the system, mainly in the modesetting paths, but we also
have two cases were atomic modesetting must take place, panic writing
and kernel debugger. So provide a central inline to determine if a
sleep or delay should be used and use this in the intel and radeon drivers.
v2: drop intel_drv.h MSLEEP macro, nobody uses it.
Based on patch from Michel Dänzer <michel.daenzer@amd.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43941
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 9 | ||||
| -rw-r--r-- | include/drm/drmP.h | 8 |
2 files changed, 9 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 5ac8a164a1e..1348705faf6 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -40,7 +40,7 @@ ret__ = -ETIMEDOUT; \ break; \ } \ - if (W && !(in_atomic() || in_dbg_master())) msleep(W); \ + if (W && drm_can_sleep()) msleep(W); \ } \ ret__; \ }) @@ -48,13 +48,6 @@ #define wait_for(COND, MS) _wait_for(COND, MS, 1) #define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0) -#define MSLEEP(x) do { \ - if (in_dbg_master()) \ - mdelay(x); \ - else \ - msleep(x); \ -} while (0) - #define KHz(x) (1000*x) #define MHz(x) KHz(1000*x) diff --git a/include/drm/drmP.h b/include/drm/drmP.h index ecd5984ef68..954badb0812 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1696,5 +1696,13 @@ extern void drm_platform_exit(struct drm_driver *driver, struct platform_device extern int drm_get_platform_dev(struct platform_device *pdev, struct drm_driver *driver); +/* returns true if currently okay to sleep */ +static __inline__ bool drm_can_sleep(void) +{ + if (in_atomic() || in_dbg_master() || irqs_disabled()) + return false; + return true; +} + #endif /* __KERNEL__ */ #endif |