[U-Boot] [PATCH v3 03/31] riscv: bootm: Add dm_remove_devices_flags() call to do_bootm_linux()

[Bin Meng]

This adds a call to dm_remove_devices_flags() to do_bootm_linux()
so that drivers that have one of the removal flags set (e.g.
DM_FLAG_ACTIVE_DMA_REMOVE) in their driver struct, may do some
last-stage cleanup before the OS is started.

arm and x86 already did such, and we should do the same for riscv.

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>

---

Changes in v3: None
Changes in v2:
- new patch to add dm_remove_devices_flags() call to do_bootm_linux()
  for riscv bootm

 arch/riscv/lib/bootm.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c
index a7a9fb9..2b5ccce 100644
--- a/arch/riscv/lib/bootm.c
+++ b/arch/riscv/lib/bootm.c
@@ -9,9 +9,11 @@
 #include <common.h>
 #include <command.h>
 #include <image.h>
-#include <u-boot/zlib.h>
 #include <asm/byteorder.h>
 #include <asm/csr.h>
+#include <dm/device.h>
+#include <dm/root.h>
+#include <u-boot/zlib.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -57,6 +59,13 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 	/* we assume that the kernel is in place */
 	printf("\nStarting kernel ...\n\n");
 
+	/*
+	 * Call remove function of all devices with a removal flag set.
+	 * This may be useful for last-stage operations, like cancelling
+	 * of DMA operation or releasing device internal buffers.
+	 */
+	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
+
 	cleanup_before_linux();
 
 	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
-- 
2.7.4