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Use makedev helper for device major and minor numbers

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Major and minor numbers can be greater than 255.  Major numbers
are 12 bits, and minor numbers are 20 bits.  Supporting major
and minor numbers > 255 allows the use of the extended block
device for extra mmc partitions.

Change-Id: I4c42bfe0781069e8e4cb13ebe26e860cdc03f866
This commit is contained in:
Colin Cross 2010-09-03 12:25:34 -07:00
parent f74af26d18
commit 17dcc5c57d
1 changed files with 1 additions and 4 deletions
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5
init/devices.c
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@ -181,11 +181,8 @@ static void make_device(const char *path, int block, int major, int minor)
mode_t mode;
dev_t dev;
if(major > 255 || minor > 255)
return;
mode = get_device_perm(path, &uid, &gid) | (block ? S_IFBLK : S_IFCHR);
dev = (major << 8) | minor;
dev = makedev(major, minor);
/* Temporarily change egid to avoid race condition setting the gid of the
* device node. Unforunately changing the euid would prevent creation of
* some device nodes, so the uid has to be set with chown() and is still