From ca1cbf907092e447be7c16df48458c02e5358308 Mon Sep 17 00:00:00 2001 From: David Kershner Date: Thu, 3 Nov 2016 11:44:18 -0400 Subject: [PATCH] staging: unisys: visorbus: fix double response This patch addresses the problem that we were sending double responses back to the s-Par Firmware when processing CONTROLVM Messages. Every message responds individually and the epilog functions would send a response as well. Since a message could delay the response, it was decided to remove the extra response from the epilog function. Signed-off-by: David Kershner Reviewed-by: Tim Sell Signed-off-by: Greg Kroah-Hartman --- drivers/staging/unisys/visorbus/visorchipset.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/staging/unisys/visorbus/visorchipset.c b/drivers/staging/unisys/visorbus/visorchipset.c index 0cd4ae2570e3..7e2004f5935a 100644 --- a/drivers/staging/unisys/visorbus/visorchipset.c +++ b/drivers/staging/unisys/visorbus/visorchipset.c @@ -728,12 +728,17 @@ bus_epilog(struct visor_device *bus_info, if (response == CONTROLVM_RESP_SUCCESS) { switch (cmd) { case CONTROLVM_BUS_CREATE: + /* chipset_bus_create is responsible to respond */ chipset_bus_create(bus_info); break; case CONTROLVM_BUS_DESTROY: + /* chipset_bus_destroy is responsible to respond */ chipset_bus_destroy(bus_info); break; + default: + goto out_respond; } + return; } out_respond: @@ -779,6 +784,7 @@ device_epilog(struct visor_device *dev_info, if (response >= 0) { switch (cmd) { case CONTROLVM_DEVICE_CREATE: + /* chipset_device_create is responsible to respond */ chipset_device_create(dev_info); break; case CONTROLVM_DEVICE_CHANGESTATE: @@ -786,6 +792,7 @@ device_epilog(struct visor_device *dev_info, if (state.alive == segment_state_running.alive && state.operating == segment_state_running.operating) { + /* chipset_device_resume will respond */ chipset_device_resume(dev_info); } /* ServerNotReady / ServerLost / SegmentStateStandby */ @@ -794,15 +801,20 @@ device_epilog(struct visor_device *dev_info, segment_state_standby.operating) { /* * technically this is standby case - * where server is lost + * where server is lost and + * chipset_device_pause will respond */ chipset_device_pause(dev_info); } break; case CONTROLVM_DEVICE_DESTROY: + /* chipset_device_destroy is responsible to respond */ chipset_device_destroy(dev_info); break; + default: + goto out_respond; } + return; } out_respond: -- 2.20.1