scsi: aacraid: Fix undefined behavior due to shift overflowing the co…

…nstant

Fix:

  drivers/scsi/aacraid/commsup.c: In function ‘aac_handle_sa_aif’:
  drivers/scsi/aacraid/commsup.c:1983:2: error: case label does not reduce to an integer constant
    case SA_AIF_BPCFG_CHANGE:
    ^~~~

See https://lore.kernel.org/r/YkwQ6%[email protected] for the gory
details as to why it triggers with older gccs only.

Link: https://lore.kernel.org/r/[email protected]
Cc: Adaptec OEM Raid Solutions <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: "Martin K. Petersen" <[email protected]>
Cc: [email protected]
Reviewed-by: Randy Dunlap <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

drivers/scsi/aacraid/aacraid.h

@@ -121,7 +121,7 @@ enum {
 #define SA_AIF_PDEV_CHANGE		(1<<4)
 #define SA_AIF_LDEV_CHANGE		(1<<5)
 #define SA_AIF_BPSTAT_CHANGE		(1<<30)
-#define SA_AIF_BPCFG_CHANGE		(1<<31)
+#define SA_AIF_BPCFG_CHANGE		(1U<<31)
 
 #define HBA_MAX_SG_EMBEDDED		28
 #define HBA_MAX_SG_SEPARATE		90