| Message ID | 20211206021021.1616073-1-jiasheng@iscas.ac.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mfd: omap-usb-host: Handle dma_set_coherent_mask error codes | expand |
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index 2a3a240b4619..05af9ad314b1 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -169,7 +169,11 @@ static struct platform_device *omap_usbhs_alloc_child(const char *name, } child->dev.dma_mask = &usbhs_dmamask; - dma_set_coherent_mask(&child->dev, DMA_BIT_MASK(32)); + ret = dma_set_coherent_mask(&child->dev, DMA_BIT_MASK(32)); + if (ret) { + dev_err(&child->dev, "DMA enable failed\n"); + goto err_alloc; + } child->dev.parent = dev; ret = platform_device_add(child);
The return value of dma_set_coherent_mask() is not always 0. To catch the exception in case that dma is not support the mask. Fixes: cbb8c220e70d ("mfd: Remove omap-usb-host magic numbers for dev dma mask") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- drivers/mfd/omap-usb-host.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)