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disk.c ensure a valid volume is returned from get_free_volume()

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volume is used for element math and indexing into buffers
-1  volume is bad

Change-Id: I1ec75ef3a848c154ea80905224ea9a3a14bf8151
This commit is contained in:
William Wilgus 2021-08-03 22:22:02 -04:00 • committed by William Wilgus
parent d57900ae12
commit cb6b0d2c0e
1 changed files with 7 additions and 0 deletions
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7
firmware/common/disk.c
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@ -174,6 +174,13 @@ int disk_mount(int drive)
int volume = get_free_volume(); int volume = get_free_volume();
if (volume < 0)
{
DEBUGF("No Free Volumes\n");
disk_writer_unlock();
return 0;
}
if (!disk_init(IF_MD(drive))) if (!disk_init(IF_MD(drive)))
{ {
disk_writer_unlock(); disk_writer_unlock();