5.15-stable review patch. If anyone has any objections, please let me know.
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From: Dexuan Cui decui@microsoft.com
commit b2f966568faaad326de97481096d0f3dc0971c43 upstream.
Currently storvsc_timeout is only used in storvsc_sdev_configure(), and 5s and 10s are used elsewhere. It turns out that rarely the 5s is not enough on Azure, so let's use storvsc_timeout everywhere.
In case a timeout happens and storvsc_channel_init() returns an error, close the VMBus channel so that any host-to-guest messages in the channel's ringbuffer, which might come late, can be safely ignored.
Add a "const" to storvsc_timeout.
Cc: stable@kernel.org Signed-off-by: Dexuan Cui decui@microsoft.com Link: https://lore.kernel.org/r/1749243459-10419-1-git-send-email-decui@microsoft.... Reviewed-by: Long Li longli@microsoft.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/storvsc_drv.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -399,7 +399,7 @@ MODULE_PARM_DESC(ring_avail_percent_lowa /* * Timeout in seconds for all devices managed by this driver. */ -static int storvsc_timeout = 180; +static const int storvsc_timeout = 180;
#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS) static struct scsi_transport_template *fc_transport_template; @@ -819,7 +819,7 @@ static void handle_multichannel_storage return; }
- t = wait_for_completion_timeout(&request->wait_event, 10*HZ); + t = wait_for_completion_timeout(&request->wait_event, storvsc_timeout * HZ); if (t == 0) { dev_err(dev, "Failed to create sub-channel: timed out\n"); return; @@ -885,7 +885,7 @@ static int storvsc_execute_vstor_op(stru if (ret != 0) return ret;
- t = wait_for_completion_timeout(&request->wait_event, 5*HZ); + t = wait_for_completion_timeout(&request->wait_event, storvsc_timeout * HZ); if (t == 0) return -ETIMEDOUT;
@@ -1398,6 +1398,8 @@ static int storvsc_connect_to_vsp(struct return ret;
ret = storvsc_channel_init(device, is_fc); + if (ret) + vmbus_close(device->channel);
return ret; } @@ -1719,7 +1721,7 @@ static int storvsc_host_reset_handler(st if (ret != 0) return FAILED;
- t = wait_for_completion_timeout(&request->wait_event, 5*HZ); + t = wait_for_completion_timeout(&request->wait_event, storvsc_timeout * HZ); if (t == 0) return TIMEOUT_ERROR;