qlge: Fix bug in firmware event handler.
Each firmware mailbox command can have a different number of valid data elements. When waiting for a mailbox command to complete it the process passes it's element count and waits for the completion. It is possible that while waiting an unrelated firmware async event (AE) can arrive. When this happens, the handler will over write the element count with the value for the newly arrived AE. This can cause the mailbox command to not get all of it's data. This patch restores original mailbox count at the end of the handler. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
d6f58c2e63
commit
709ac4f43d
1 changed files with 7 additions and 0 deletions
|
@ -453,6 +453,13 @@ static int ql_mpi_handler(struct ql_adapter *qdev, struct mbox_params *mbcp)
|
|||
}
|
||||
end:
|
||||
ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
|
||||
/* Restore the original mailbox count to
|
||||
* what the caller asked for. This can get
|
||||
* changed when a mailbox command is waiting
|
||||
* for a response and an AEN arrives and
|
||||
* is handled.
|
||||
* */
|
||||
mbcp->out_count = orig_count;
|
||||
return status;
|
||||
}
|
||||
|
||||
|
|
Reference in a new issue