[SCSI] areca: improve driver stability and compatibility

Description:

    1. Implement PCI-Express error recovery function and AER
       capability, especially thanks to Yanmin Zhang's openhanded help
       about AER

    2. Implement the selection of ARCMSR_MAX_XFER_SECTORS_B=4096 if
       firmware version is latter than 1.42

    3. Add arcmsr_done4_abort_postqueue in arcmsr_iop_reset function
       to improve the stability as hot-unplug/plug

    4. Modify the ISR, arcmsr_interrupt routine, to prevent the
       inconsistency with sg_mod driver if application directly calls
       the arcmsr driver w/o passing through scsi midlayer

Signed-off-by: Nick Cheng <nick.cheng@areca.com.tw>
[jejb: unused variable removal]
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
index aff96db9ccf6..f0b8bf4534f0 100644
--- a/drivers/scsi/arcmsr/arcmsr.h
+++ b/drivers/scsi/arcmsr/arcmsr.h
@@ -48,9 +48,10 @@ struct class_device_attribute;
 
 #define ARCMSR_MAX_OUTSTANDING_CMD                                              256
 #define ARCMSR_MAX_FREECCB_NUM                                                  288
-#define ARCMSR_DRIVER_VERSION                           "Driver Version 1.20.00.13"
+#define ARCMSR_DRIVER_VERSION                           "Driver Version 1.20.00.14"
 #define ARCMSR_SCSI_INITIATOR_ID                                                255
 #define ARCMSR_MAX_XFER_SECTORS                                                 512
+#define ARCMSR_MAX_XFER_SECTORS_B                                              4096
 #define ARCMSR_MAX_TARGETID                                                      17
 #define ARCMSR_MAX_TARGETLUN                                                      8
 #define ARCMSR_MAX_CMD_PERLUN                            ARCMSR_MAX_OUTSTANDING_CMD
@@ -469,4 +470,3 @@ extern void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb);
 extern struct class_device_attribute *arcmsr_host_attrs[];
 extern int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb);
 void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb);
-