drm/rockchip: Fix drm rga driver for arm64

compat_uptr_t is defined in asm/compat.h:
typedef u32 		compat_uptr_t;
but cmd and cmd_buf store the user pointers.
Do not convert 64 bit pointer to 32 bit, it
will lead copy_from_user fail.

Change-Id: Ia0435f2a495bbe64d583e213349cb9f041c9d75a
Signed-off-by: Zikim,Wei <wzq@rock-chips.com>

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_rga.c b/drivers/gpu/drm/rockchip/rockchip_drm_rga.c
index 19045b14431d7db8683d5ba122d56e58be3cd39a..2e0944ecb02c4c90f9097c554e85821fe14aad60 100644 (file)
--- a/drivers/gpu/drm/rockchip/rockchip_drm_rga.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_rga.c
@@ -550,13 +550,13 @@ int rockchip_rga_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data,
         * command have two integer, one for register offset, another for
         * register value.
         */
-       if (copy_from_user(cmdlist->data, compat_ptr((compat_uptr_t)req->cmd),
+       if (copy_from_user(cmdlist->data, (void __user *)req->cmd,
                           sizeof(struct drm_rockchip_rga_cmd) * req->cmd_nr))
                return -EFAULT;
        cmdlist->last += req->cmd_nr * 2;
 
        if (copy_from_user(&cmdlist->data[cmdlist->last],
-                          compat_ptr((compat_uptr_t)req->cmd_buf),
+                          (void __user *)req->cmd_buf,
                           sizeof(struct drm_rockchip_rga_cmd) * req->cmd_buf_nr))
                return -EFAULT;
        cmdlist->last += req->cmd_buf_nr * 2;