Fix NULL pointer dereference in RZ/{G2L,V2M,A2M} pinctrl driver due to
a race condition during boot. We have seen issues with RZ/{G2L,V2M} boards.
Based on the code, RZ/A2 will also hit this issue. So fixing RZ/A2 aswell.
This issue is reproducible with 1/200 reboots.
v2->v3:
* Added comments for bitmap_lock and lock.
* Moved map allocation down to reduce lock section.
* Added locks for maps and pinctrl group and function creation/remove
calls
* Added unlock_and_done label for lock error path.
v1->v2:
* Updated crash logs as per submitting patches doc.
Biju Das (3):
pinctrl: renesas: rzg2l: Fix NULL pointer dereference in
rzg2l_dt_subnode_to_map()
pinctrl: renesas: rzv2m: Fix NULL pointer dereference in
rzv2m_dt_subnode_to_map()
pinctrl: renesas: rza2: Add lock around
pinctrl_generic{{add,remove}_group,{add,remove}_function}
drivers/pinctrl/renesas/pinctrl-rza2.c | 15 ++++++-
drivers/pinctrl/renesas/pinctrl-rzg2l.c | 58 ++++++++++++++-----------
drivers/pinctrl/renesas/pinctrl-rzv2m.c | 56 ++++++++++++++----------
3 files changed, 78 insertions(+), 51 deletions(-)
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2.25.1
