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| author | Jeffrey Carlyle | 2016-05-19 03:55:13 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2016-05-19 03:59:22 +0200 |
| commit | e16715c135d80aafea867849f938b080d4f4eadb (patch) | |
| tree | 99ecb0aba76d6f5a0c9c369d1a6ff4796b1bd626 /drivers/staging/greybus/gbphy.c | |
| parent | greybus: uart fix missing negation on DTR setting (diff) | |
| download | kernel-qcow2-linux-e16715c135d80aafea867849f938b080d4f4eadb.tar.gz kernel-qcow2-linux-e16715c135d80aafea867849f938b080d4f4eadb.tar.xz kernel-qcow2-linux-e16715c135d80aafea867849f938b080d4f4eadb.zip | |
greybus: interface: retry enumeration of UniPro-only modules
Greybus modules will sometimes fail to send the mailbox poke and
erroneously be enumerated as UniPro-only modules. The root cause for
this on the module side is not fully understand, but it seems that this
may be due to "the bootrom bug:" a known problem with the bootrom where
linkup will occasionally fail because of a race condition.
Before the new hotplug code was implemented in the firmware, the SVC
would retry enumeration of modules that did not send the mailbox poke;
this patch ports that functionality to the AP.
Signed-off-by: Jeffrey Carlyle <jcarlyle@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/gbphy.c')
0 files changed, 0 insertions, 0 deletions