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bbb: add a comment explaining why we cannot disable the analog and pwm

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modules by removing them from the slots file
This commit is contained in:
Karan Misra 2014-03-30 04:15:21 +05:30
parent 9210e4ef1a
commit 6342dd3a19
1 changed files with 4 additions and 0 deletions
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4
bbb.go
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@ -117,6 +117,10 @@ func bbbEnsureFeatureEnabled(id string) error {
return err return err
} }
// This cannot be currently used to disable things like the
// analog and pwm modules. Removing them from slots file can
// potentially cause a kernel panic and unsettle things. So the
// recommended thing to do is to simply reboot.
func bbbEnsureFeatureDisabled(id string) error { func bbbEnsureFeatureDisabled(id string) error {
pattern := "/sys/devices/bone_capemgr.*/slots" pattern := "/sys/devices/bone_capemgr.*/slots"
file, err := findFirstMatchingFile(pattern) file, err := findFirstMatchingFile(pattern)