The following commit has been merged in the linux branch: commit da03945140a035a2962f7f93e359085596f20499 Author: Ron Mercer ron.mercer@qlogic.com Date: Wed Oct 28 08:39:21 2009 +0000
qlge: Fix firmware mailbox command timeout.
The mailbox command process would only process a maximum of 5 unrelated firmware events while waiting for it's command completion status. It should process an unlimited number of events while waiting for a maximum of 5 seconds.
Signed-off-by: Ron Mercer ron.mercer@qlogic.com Signed-off-by: David S. Miller davem@davemloft.net
diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h index e7285f0..c2383ad 100644 --- a/drivers/net/qlge/qlge.h +++ b/drivers/net/qlge/qlge.h @@ -95,6 +95,7 @@ enum {
/* Misc. stuff */ MAILBOX_COUNT = 16, + MAILBOX_TIMEOUT = 5,
PROC_ADDR_RDY = (1 << 31), PROC_ADDR_R = (1 << 30), diff --git a/drivers/net/qlge/qlge_mpi.c b/drivers/net/qlge/qlge_mpi.c index 99e58e3..bcf13c9 100644 --- a/drivers/net/qlge/qlge_mpi.c +++ b/drivers/net/qlge/qlge_mpi.c @@ -470,7 +470,8 @@ end: */ static int ql_mailbox_command(struct ql_adapter *qdev, struct mbox_params *mbcp) { - int status, count; + int status; + unsigned long count;
/* Begin polled mode for MPI */ @@ -491,9 +492,9 @@ static int ql_mailbox_command(struct ql_adapter *qdev, struct mbox_params *mbcp) /* Wait for the command to complete. We loop * here because some AEN might arrive while * we're waiting for the mailbox command to - * complete. If more than 5 arrive then we can + * complete. If more than 5 seconds expire we can * assume something is wrong. */ - count = 5; + count = jiffies + HZ * MAILBOX_TIMEOUT; do { /* Wait for the interrupt to come in. */ status = ql_wait_mbx_cmd_cmplt(qdev); @@ -517,15 +518,15 @@ static int ql_mailbox_command(struct ql_adapter *qdev, struct mbox_params *mbcp) MB_CMD_STS_GOOD) || ((mbcp->mbox_out[0] & 0x0000f000) == MB_CMD_STS_INTRMDT)) - break; - } while (--count); + goto done; + } while (time_before(jiffies, count));
- if (!count) { - QPRINTK(qdev, DRV, ERR, - "Timed out waiting for mailbox complete.\n"); - status = -ETIMEDOUT; - goto end; - } + QPRINTK(qdev, DRV, ERR, + "Timed out waiting for mailbox complete.\n"); + status = -ETIMEDOUT; + goto end; + +done:
/* Now we can clear the interrupt condition * and look at our status.