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of/fdt: add of_fdt_device_is_available function

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Add an equivalent function to of_device_is_available for flattened DT, and
convert the one existing open coded occurrence.

Tested-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Rob Herring
2017-09-28 19:20:32 -05:00
parent b56b5528f5
commit ecc8a96e25
1 changed files with 14 additions and 3 deletions
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17
drivers/of/fdt.c
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@@ -132,6 +132,19 @@ bool of_fdt_is_big_endian(const void *blob, unsigned long node)
return false; return false;
} }
static bool of_fdt_device_is_available(const void *blob, unsigned long node)
{
const char *status = fdt_getprop(blob, node, "status", NULL);
if (!status)
return true;
if (!strcmp(status, "ok") || !strcmp(status, "okay"))
return true;
return false;
}
/** /**
* of_fdt_match - Return true if node matches a list of compatible values * of_fdt_match - Return true if node matches a list of compatible values
*/ */
@@ -605,7 +618,6 @@ static int __init __fdt_scan_reserved_mem(unsigned long node, const char *uname,
int depth, void *data) int depth, void *data)
{ {
static int found; static int found;
const char *status;
int err; int err;
if (!found && depth == 1 && strcmp(uname, "reserved-memory") == 0) { if (!found && depth == 1 && strcmp(uname, "reserved-memory") == 0) {
@@ -625,8 +637,7 @@ static int __init __fdt_scan_reserved_mem(unsigned long node, const char *uname,
return 1; return 1;
} }
status = of_get_flat_dt_prop(node, "status", NULL); if (!of_fdt_device_is_available(initial_boot_params, node))
if (status && strcmp(status, "okay") != 0 && strcmp(status, "ok") != 0)
return 0; return 0;
err = __reserved_mem_reserve_reg(node, uname); err = __reserved_mem_reserve_reg(node, uname);