82525f41d5
With -Wsign-compare, compilers warn about a mismatching signedness in a comparison in fdt_setprop_inplace_namelen_partial(). fdt_getprop_namelen() will only return negative error values in "proplen" if the return value is NULL. So we can rely on "proplen" being positive in our case and can safely cast it to an unsigned type. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Message-Id: <20201001164630.4980-5-andre.przywara@arm.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
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/*
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* libfdt - Flat Device Tree manipulation
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* Copyright (C) 2006 David Gibson, IBM Corporation.
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*/
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#include "libfdt_env.h"
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#include <fdt.h>
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#include <libfdt.h>
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#include "libfdt_internal.h"
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int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
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const char *name, int namelen,
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uint32_t idx, const void *val,
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int len)
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{
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void *propval;
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int proplen;
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propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,
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&proplen);
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if (!propval)
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return proplen;
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if ((unsigned)proplen < (len + idx))
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return -FDT_ERR_NOSPACE;
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memcpy((char *)propval + idx, val, len);
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return 0;
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}
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int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
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const void *val, int len)
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{
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const void *propval;
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int proplen;
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propval = fdt_getprop(fdt, nodeoffset, name, &proplen);
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if (!propval)
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return proplen;
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if (proplen != len)
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return -FDT_ERR_NOSPACE;
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return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,
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strlen(name), 0,
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val, len);
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}
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static void fdt_nop_region_(void *start, int len)
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{
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fdt32_t *p;
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for (p = start; (char *)p < ((char *)start + len); p++)
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*p = cpu_to_fdt32(FDT_NOP);
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}
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int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
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{
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struct fdt_property *prop;
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int len;
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prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
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if (!prop)
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return len;
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fdt_nop_region_(prop, len + sizeof(*prop));
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return 0;
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}
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int fdt_node_end_offset_(void *fdt, int offset)
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{
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int depth = 0;
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while ((offset >= 0) && (depth >= 0))
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offset = fdt_next_node(fdt, offset, &depth);
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return offset;
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}
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int fdt_nop_node(void *fdt, int nodeoffset)
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{
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int endoffset;
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endoffset = fdt_node_end_offset_(fdt, nodeoffset);
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if (endoffset < 0)
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return endoffset;
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fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),
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endoffset - nodeoffset);
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return 0;
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}
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