From d9b6d85a38df398cfe0ba3f0fae59d58c9a6d433 Mon Sep 17 00:00:00 2001 From: "Guilherme G. Piccoli" Date: Fri, 17 Nov 2017 19:14:54 -0200 Subject: scsi: aacraid: Perform initialization reset only once Currently the driver accepts two ways of requesting an initialization reset on the adapter: by passing aac_reset_devices module parameter, or the generic kernel parameter reset_devices. It's working as intended...but if we end up reaching a scsi hang and the scsi EH mechanism takes place, aacraid performs resets as part of the scsi error recovery procedure. These EH routines might reinitialize the device, and if we have provided some of the reset parameters in the kernel command-line, we again perform an "initialization" reset. So, to avoid this duplication of resets in case of scsi EH path, this patch adds a field to aac_dev struct to keep per-adapter track of the init reset request - once it's done, we set it to false and don't proactively reset anymore in case of reinitializations. Signed-off-by: Guilherme G. Piccoli Reviewed-by: Raghava Aditya Renukunta Signed-off-by: Martin K. Petersen --- drivers/scsi/aacraid/rx.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers/scsi/aacraid/rx.c') diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c index 93ef7c37e568..620166694171 100644 --- a/drivers/scsi/aacraid/rx.c +++ b/drivers/scsi/aacraid/rx.c @@ -561,11 +561,16 @@ int _aac_rx_init(struct aac_dev *dev) dev->a_ops.adapter_sync_cmd = rx_sync_cmd; dev->a_ops.adapter_enable_int = aac_rx_disable_interrupt; dev->OIMR = status = rx_readb (dev, MUnit.OIMR); - if ((((status & 0x0c) != 0x0c) || aac_reset_devices || reset_devices) && - !aac_rx_restart_adapter(dev, 0, IOP_HWSOFT_RESET)) - /* Make sure the Hardware FIFO is empty */ - while ((++restart < 512) && - (rx_readl(dev, MUnit.OutboundQueue) != 0xFFFFFFFFL)); + + if (((status & 0x0c) != 0x0c) || dev->init_reset) { + dev->init_reset = false; + if (!aac_rx_restart_adapter(dev, 0, IOP_HWSOFT_RESET)) { + /* Make sure the Hardware FIFO is empty */ + while ((++restart < 512) && + (rx_readl(dev, MUnit.OutboundQueue) != 0xFFFFFFFFL)); + } + } + /* * Check to see if the board panic'd while booting. */ -- cgit v1.2.3-59-g8ed1b