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dma-debug: add dma_debug_driver kernel command line

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This patch add the dma_debug_driver= boot parameter to enable the driver
filter for early boot.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-05-22 21:49:51 +02:00
parent 8a6fc708b9
commit 1745de5e56
2 changed files with 25 additions and 0 deletions
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18
lib/dma-debug.c
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@ -1109,3 +1109,21 @@ void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
}
EXPORT_SYMBOL(debug_dma_sync_sg_for_device);
static int __init dma_debug_driver_setup(char *str)
{
int i;
for (i = 0; i < NAME_MAX_LEN - 1; ++i, ++str) {
current_driver_name[i] = *str;
if (*str == 0)
break;
}
if (current_driver_name[0])
printk(KERN_INFO "DMA-API: enable driver filter for "
"driver [%s]\n", current_driver_name);
return 1;
}
__setup("dma_debug_driver=", dma_debug_driver_setup);