From: Pan Xinhui Date: Thu, 10 Dec 2015 07:30:02 +0000 (+0800) Subject: powerpc/nvram: Fix an incorrect partition merge X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=11b7e154b132232535befe51c55db048069c8461;p=linux-beck.git powerpc/nvram: Fix an incorrect partition merge When we merge two contiguous partitions whose signatures are marked NVRAM_SIG_FREE, We need update prev's length and checksum, then write it to nvram, not cur's. So lets fix this mistake now. Also use memset instead of strncpy to set the partition's name. It's more readable if we want to fill up with duplicate chars . Fixes: fa2b4e54d41f ("powerpc/nvram: Improve partition removal") Signed-off-by: Pan Xinhui Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index 6cd3a45880c0..34d2c595de23 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -956,7 +956,7 @@ int __init nvram_remove_partition(const char *name, int sig, /* Make partition a free partition */ part->header.signature = NVRAM_SIG_FREE; - strncpy(part->header.name, "wwwwwwwwwwww", 12); + memset(part->header.name, 'w', 12); part->header.checksum = nvram_checksum(&part->header); rc = nvram_write_header(part); if (rc <= 0) { @@ -974,8 +974,8 @@ int __init nvram_remove_partition(const char *name, int sig, } if (prev) { prev->header.length += part->header.length; - prev->header.checksum = nvram_checksum(&part->header); - rc = nvram_write_header(part); + prev->header.checksum = nvram_checksum(&prev->header); + rc = nvram_write_header(prev); if (rc <= 0) { printk(KERN_ERR "nvram_remove_partition: nvram_write failed (%d)\n", rc); return rc;