The driver may sleep under a spin lock, and the function call path is:
psbfb_2d_submit (acquire the lock by spin_lock_irqsave)
psb_2d_wait_available
psb_spank
msleep --> may sleep
To fix it, the "msleep" is replaced with "mdelay" in psb_spank.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/gpu/drm/gma500/accel_2d.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/gma500/accel_2d.c
b/drivers/gpu/drm/gma500/accel_2d.c
index c51d925..7c24c8a 100644
--- a/drivers/gpu/drm/gma500/accel_2d.c
+++ b/drivers/gpu/drm/gma500/accel_2d.c
@@ -55,7 +55,7 @@ void psb_spank(struct drm_psb_private *dev_priv)
_PSB_CS_RESET_TWOD_RESET, PSB_CR_SOFT_RESET);
PSB_RSGX32(PSB_CR_SOFT_RESET);
- msleep(1);
+ mdelay(1);
PSB_WSGX32(0, PSB_CR_SOFT_RESET);
wmb();
@@ -64,7 +64,7 @@ void psb_spank(struct drm_psb_private *dev_priv)
wmb();
(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
- msleep(1);
+ mdelay(1);
PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_CB_CTRL_CLEAR_FAULT,
PSB_CR_BIF_CTRL);
(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
--
1.7.9.5
