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disk/part.c: Fix device enumeration through API

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The patch below fixes device enumeration through the U-Boot API.

Device enumeration crashes when the system in question doesn't
have any RAM mapped to address zero (I discovered this on a
BeagleBone board), since the enumeration calls get_dev with a
NULL ifname sometimes which then gets passed down to strncmp().

This fix simply ensures that get_dev returns NULL when invoked
with a NULL ifname.

Signed-off-by: Tim Kientzle <kientzle@freebsd.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Tim Kientzle 2012-03-27 11:43:25 +02:00 • committed by Anatolij Gustschin
parent d8d265999b
commit 7e71dc6884
1 changed files with 3 additions and 0 deletions
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3
disk/part.c
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@ -80,6 +80,9 @@ block_dev_desc_t *get_dev(char* ifname, int dev)
block_dev_desc_t* (*reloc_get_dev)(int dev);
char *name;
if (!ifname)
return NULL;
name = drvr->name;
#ifdef CONFIG_NEEDS_MANUAL_RELOC
name += gd->reloc_off;