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fdt: Tighten up error handling in fdtdec_get_pci_addr() 

This function returns -ENOENT when the property is missing (which the caller
might forgive) and also when the property is present but incorrectly
formatted (which many callers would like to report).

Update the error return value to allow these different situations to be
distinguished.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
utp
Simon Glass 2015-03-05 12:25:19 -07:00
parent cc5e196e03
commit 106cce9604
2 changed files with 6 additions and 2 deletions
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4
include/fdtdec.h
View File

@ -327,7 +327,9 @@ fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
* @param type pci address type (FDT_PCI_SPACE_xxx)
* @param prop_name name of property to find
* @param addr returns pci address in the form of fdt_pci_addr
* @return 0 if ok, negative on error
* @return 0 if ok, -ENOENT if the property did not exist, -EINVAL if the
* format of the property was invalid, -ENXIO if the requested
* address type was not found
*/
int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
const char *prop_name, struct fdt_pci_addr *addr);

4
lib/fdtdec.c
View File

@ -160,8 +160,10 @@ int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
}
}
if (i == num)
if (i == num) {
ret = -ENXIO;
goto fail;
}
return 0;
} else {