From: Eddie James eajames@linux.ibm.com
[ Upstream commit 7ce98fb6c53d2311b3e9faae90b1a9c1a96534db ]
SBE fifo operations should be allowed while the SBE is in any of the "IPL" states. Operations should succeed in this state.
Fixes: 9f4a8a2d7f9d fsi/sbefifo: Add driver for the SBE FIFO Reviewed-by: Joel Stanley joel@jms.id.au Tested-by: Alistair Popple alistair@popple.id.au Signed-off-by: Eddie James eajames@linux.ibm.com Link: https://lore.kernel.org/r/1561575415-3282-1-git-send-email-eajames@linux.ibm... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/fsi/fsi-sbefifo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/fsi/fsi-sbefifo.c b/drivers/fsi/fsi-sbefifo.c index ae861342626e..9fa3959e0855 100644 --- a/drivers/fsi/fsi-sbefifo.c +++ b/drivers/fsi/fsi-sbefifo.c @@ -289,11 +289,11 @@ static int sbefifo_check_sbe_state(struct sbefifo *sbefifo) switch ((sbm & CFAM_SBM_SBE_STATE_MASK) >> CFAM_SBM_SBE_STATE_SHIFT) { case SBE_STATE_UNKNOWN: return -ESHUTDOWN; + case SBE_STATE_DMT: + return -EBUSY; case SBE_STATE_IPLING: case SBE_STATE_ISTEP: case SBE_STATE_MPIPL: - case SBE_STATE_DMT: - return -EBUSY; case SBE_STATE_RUNTIME: case SBE_STATE_DUMP: /* Not sure about that one */ break;