@@ -29,6 +29,7 @@
struct sp_platform {
int coherent;
unsigned int irq_count;
+ bool is_platform_device;
};
static const struct sp_dev_vdata dev_vdata[] = {
@@ -109,6 +110,7 @@ static void sp_platform_fill_vdata(struct sp_dev_vdata *vdata, struct psp_vdata
static struct sp_dev_vdata *sp_get_platform_version(struct sp_device *sp)
{
+ struct sp_platform *sp_platform = sp->dev_specific;
struct psp_platform_data *pdata;
struct device *dev = sp->dev;
struct sp_dev_vdata *vdata;
@@ -129,6 +131,8 @@ static struct sp_dev_vdata *sp_get_platform_version(struct sp_device *sp)
sev = (void *)psp + sizeof(*psp);
sp_platform_fill_vdata(vdata, psp, sev, pdata);
+ sp_platform->is_platform_device = true;
+
dev_dbg(dev, "PSP feature register:\t%x\n", psp->feature_reg);
dev_dbg(dev, "PSP IRQ enable register:\t%x\n", psp->inten_reg);
dev_dbg(dev, "PSP IRQ status register:\t%x\n", psp->intsts_reg);
@@ -207,7 +211,7 @@ static int sp_platform_probe(struct platform_device *pdev)
}
attr = device_get_dma_attr(dev);
- if (attr == DEV_DMA_NOT_SUPPORTED) {
+ if (attr == DEV_DMA_NOT_SUPPORTED && !sp_platform->is_platform_device) {
dev_err(dev, "DMA is not supported");
goto e_err;
}
The value of device_get_dma_attr() is only relevenat for ARM64 and CCP devices to configure the value of the axcache attribute used to access memory by the coprocessor. None of this applies to the platform psp so skip it. Skip the dma_attr check by keeping track of the fact that we are a pure platform device. Signed-off-by: Jeremi Piotrowski <jpiotrowski@linux.microsoft.com> --- drivers/crypto/ccp/sp-platform.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)