korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-17 01:04:19 +08:00
Code Issues Packages Projects Releases Wiki Activity

omap: McBSP: Do not use extensive spin locks for dma_op_mode

Browse Source 
The use of the spin lock, which supposed to protect the the
dma_op_mode causing "INFO: inconsistent lock state" on
playback start.
Remove the spin locks around the dma_op_mode, when it's
purpuse is to protect the dma_op_mode.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Peter Ujfalusi 2009-11-22 10:11:05 -08:00 committed by Tony Lindgren
parent a76e9a90e8
commit eebfa9f239
1 changed files with 0 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/plat-omap/mcbsp.c
View File

@ -298,9 +298,7 @@ int omap_mcbsp_get_dma_op_mode(unsigned int id)
}
mcbsp = id_to_mcbsp_ptr(id);
spin_lock_irq(&mcbsp->lock);
dma_op_mode = mcbsp->dma_op_mode;
spin_unlock_irq(&mcbsp->lock);
return dma_op_mode;
}
@ -318,7 +316,6 @@ static inline void omap34xx_mcbsp_request(struct omap_mcbsp *mcbsp)
syscon = OMAP_MCBSP_READ(mcbsp->io_base, SYSCON);
syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03) | CLOCKACTIVITY(0x03));
spin_lock_irq(&mcbsp->lock);
if (mcbsp->dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) {
syscon |= (ENAWAKEUP | SIDLEMODE(0x02) |
CLOCKACTIVITY(0x02));
@ -327,7 +324,6 @@ static inline void omap34xx_mcbsp_request(struct omap_mcbsp *mcbsp)
} else {
syscon |= SIDLEMODE(0x01);
}
spin_unlock_irq(&mcbsp->lock);
OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
}
@ -1145,9 +1141,7 @@ static ssize_t dma_op_mode_show(struct device *dev,
ssize_t len = 0;
const char * const *s;
spin_lock_irq(&mcbsp->lock);
dma_op_mode = mcbsp->dma_op_mode;
spin_unlock_irq(&mcbsp->lock);
for (s = &dma_op_modes[i]; i < ARRAY_SIZE(dma_op_modes); s++, i++) {
if (dma_op_mode == i)