forked from luck/tmp_suning_uos_patched
powerpc/nvram: Fix endian issue when using the partition length
When reading partitions, the length has to be translated from big endian to the endian order of the host. Similarly, when writing partitions, the length needs to be in big endian order. The userspace tool 'nvram' needs a similar fix as it is reading and writing partitions through /dev/nram : http://sourceforge.net/p/powerpc-utils/mailman/message/31571277/ Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -223,9 +223,13 @@ static int __init nvram_write_header(struct nvram_partition * part)
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{
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{
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loff_t tmp_index;
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loff_t tmp_index;
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int rc;
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int rc;
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struct nvram_header phead;
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memcpy(&phead, &part->header, NVRAM_HEADER_LEN);
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phead.length = cpu_to_be16(phead.length);
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tmp_index = part->index;
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tmp_index = part->index;
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rc = ppc_md.nvram_write((char *)&part->header, NVRAM_HEADER_LEN, &tmp_index);
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rc = ppc_md.nvram_write((char *)&phead, NVRAM_HEADER_LEN, &tmp_index);
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return rc;
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return rc;
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}
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}
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@ -505,6 +509,8 @@ int __init nvram_scan_partitions(void)
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memcpy(&phead, header, NVRAM_HEADER_LEN);
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memcpy(&phead, header, NVRAM_HEADER_LEN);
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phead.length = be16_to_cpu(phead.length);
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err = 0;
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err = 0;
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c_sum = nvram_checksum(&phead);
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c_sum = nvram_checksum(&phead);
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if (c_sum != phead.checksum) {
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if (c_sum != phead.checksum) {
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