@@ -14,7 +14,7 @@
#include "dw-edma-core.h"
#define REGS_ADDR(name) \
- ((void __force *)®s->name)
+ ((void __iomem *)®s->name)
#define REGISTER(name) \
{ #name, REGS_ADDR(name) }
@@ -48,12 +48,13 @@ static struct {
struct debugfs_entries {
const char *name;
- dma_addr_t *reg;
+ void __iomem *reg;
};
static int dw_edma_debugfs_u32_get(void *data, u64 *val)
{
- void __iomem *reg = (void __force __iomem *)data;
+ void __iomem *reg = data;
+
if (dw->chip->mf == EDMA_MF_EDMA_LEGACY &&
reg >= (void __iomem *)®s->type.legacy.ch) {
void __iomem *ptr = ®s->type.legacy.ch;
debugfs_entries structure declared in the dw-edma-v0-debugfs.c module contains the DebugFS node' register address. The address is declared as dma_addr_t type, but first it's assigned with virtual CPU IOMEM address and then it's cast back to the virtual address. Even though the castes sandwich will unlikely cause any problem since normally DMA address is at least of the same size as the CPU virtual address, it's at the very least redundant if not to say logically incorrect. Let's fix it by just stop casting the pointer back and worth and just preserve the address as a pointer to void with __iomem qualifier. Fixes: 305aebeff879 ("dmaengine: Add Synopsys eDMA IP version 0 debugfs support") Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Acked-by: Vinod Koul <vkoul@kernel.org> --- drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)