Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[pandora-kernel.git] / drivers / block / cciss.c

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index c7a527c..a52cc7f 100644 (file)
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -26,6 +26,7 @@
 #include <linux/pci.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/delay.h>
 #include <linux/major.h>
 #include <linux/fs.h>
@@ -226,8 +227,18 @@ static inline void addQ(struct hlist_head *list, CommandList_struct *c)
 
 static inline void removeQ(CommandList_struct *c)
 {
-       if (WARN_ON(hlist_unhashed(&c->list)))
+       /*
+        * After kexec/dump some commands might still
+        * be in flight, which the firmware will try
+        * to complete. Resetting the firmware doesn't work
+        * with old fw revisions, so we have to mark
+        * them off as 'stale' to prevent the driver from
+        * falling over.
+        */
+       if (WARN_ON(hlist_unhashed(&c->list))) {
+               c->cmd_type = CMD_MSG_STALE;
                return;
+       }
 
        hlist_del_init(&c->list);
 }
@@ -4246,7 +4257,8 @@ static void fail_all_cmds(unsigned long ctlr)
        while (!hlist_empty(&h->cmpQ)) {
                c = hlist_entry(h->cmpQ.first, CommandList_struct, list);
                removeQ(c);
-               c->err_info->CommandStatus = CMD_HARDWARE_ERR;
+               if (c->cmd_type != CMD_MSG_STALE)
+                       c->err_info->CommandStatus = CMD_HARDWARE_ERR;
                if (c->cmd_type == CMD_RWREQ) {
                        complete_command(h, c, 0);
                } else if (c->cmd_type == CMD_IOCTL_PEND)