diff options
| author | Robby Cai <R63905@freescale.com> | 2012-11-02 15:58:40 +0800 |
|---|---|---|
| committer | Robby Cai <R63905@freescale.com> | 2012-11-02 16:37:03 +0800 |
| commit | 985b79c51659a890ba4ee483feebc2c053fe76cd (patch) | |
| tree | 271581085ec63f9094aaebca31a49d9f73460ee6 /drivers/dma | |
| parent | 35cde7a40f2176ced04cf464d29663bbe7df4019 (diff) | |
ENGR00232000: Fix "dmaengine: failed to get dma1chan0: (-22)" when boot
The log from [MX6DL/S_SD]:
...
mxc_sdc_fb mxc_sdc_fb.1: register mxc display driver ldb
dmaengine: failed to get dma1chan0: (-22)
dmaengine: failed to get dma1chan1: (-22)
dmaengine: failed to get dma1chan2: (-22)
dmaengine: failed to get dma1chan3: (-22)
dmaengine: failed to get dma1chan4: (-22)
dmaengine: failed to get dma1chan5: (-22)
dmaengine: failed to get dma1chan6: (-22)
dmaengine: failed to get dma1chan7: (-22)
dmaengine: failed to get dma1chan8: (-22)
dmaengine: failed to get dma1chan9: (-22)
dmaengine: failed to get dma1chan10: (-22)
dmaengine: failed to get dma1chan11: (-22)
dmaengine: failed to get dma1chan12: (-22)
dmaengine: failed to get dma1chan13: (-22)
dmaengine: failed to get dma1chan14: (-22)
dmaengine: failed to get dma1chan15: (-22)
...
It happens when there are many DMA-engine drivers in the system and
dmaengine_get() is called. dmaengine_get() will call dma_chan_get(), which will
call device_alloc_chan_resources() literally on channels of available dma
drivers unless reach -ENODEV. device_alloc_chan_resources() is implemented
in the individual dma drivers, which could return -EINVAL rather than -ENODEV,
then the above messages print out (doesn't hurt, however).
Indeed, the dmaengine_get() and dmaengine_put() is not needed and thus removed.
Signed-off-by: Robby Cai <R63905@freescale.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/pxp/pxp_device.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/dma/pxp/pxp_device.c b/drivers/dma/pxp/pxp_device.c index 6b3d7aa37dce..5981fa6331a9 100644 --- a/drivers/dma/pxp/pxp_device.c +++ b/drivers/dma/pxp/pxp_device.c @@ -477,9 +477,6 @@ static int __devinit pxp_device_probe(struct platform_device *pdev) { int ret; - /* PxP DMA interface */ - dmaengine_get(); - ret = misc_register(&pxp_device_miscdev); if (ret) return ret; @@ -492,8 +489,6 @@ static int __devexit pxp_device_remove(struct platform_device *pdev) { misc_deregister(&pxp_device_miscdev); - dmaengine_put(); - return 0; } |