[U-Boot] [PATCH 2/6] powerpc/85xx: fdt_set_phy_handle() should return an error code

Timur Tabi
2012-05-04T22:21:28Z

fdt_set_phy_handle() makes several FDT calls that could fail, so it should
not be hiding these errors.

Signed-off-by: Timur Tabi <timur@freescale.com>
---
board/freescale/common/fman.c | 36 +++++++++++++++++++-----------------
board/freescale/common/fman.h | 2 +-
2 files changed, 20 insertions(+), 18 deletions(-)

diff --git a/board/freescale/common/fman.c b/board/freescale/common/fman.c
index 8a55fde..6ddf816 100644
--- a/board/freescale/common/fman.c
+++ b/board/freescale/common/fman.c
@@ -37,31 +37,33 @@
* ... update that Ethernet node's phy-handle property to point to the
* ethernet-phy node. This is how we link an Ethernet node to its PHY, so each
* PHY in a virtual MDIO node must have an alias.
+ *
+ * Returns 0 on success, or a negative FDT error code on error.
*/
-void fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
+int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
const char *alias)
{
- int offset, ph;
+ int offset;
+ unsigned int ph;
const char *path;

/* Get a path to the node that 'alias' points to */
path = fdt_get_alias(fdt, alias);
- if (path) {
- /* Get the offset of that node */
- int off = fdt_path_offset(fdt, path);
- if (off > 0)
- ph = fdt_create_phandle(fdt, off);
- else
- return;
- } else {
- return ;
- }
+ if (!path)
+ return -FDT_ERR_BADPATH;
+
+ /* Get the offset of that node */
+ offset = fdt_path_offset(fdt, path);
+ if (offset < 0)
+ return offset;

- /* failed to create a phandle */
- if (ph <= 0)
- return ;
+ ph = fdt_create_phandle(fdt, offset);
+ if (!ph)
+ return -FDT_ERR_BADPHANDLE;

offset = fdt_node_offset_by_compat_reg(fdt, compat, addr);
- if (offset > 0)
- fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph));
+ if (offset < 0)
+ return offset;
+
+ return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph));
}
diff --git a/board/freescale/common/fman.h b/board/freescale/common/fman.h
index 19ef7c4..d39ef08 100644
--- a/board/freescale/common/fman.h
+++ b/board/freescale/common/fman.h
@@ -20,7 +20,7 @@
#ifndef __FMAN_BOARD_HELPER__
#define __FMAN_BOARD_HELPER__

-void fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
+int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
const char *alias);

#endif
--
1.7.3.4