atl1c: Do not call cancel_work_sync from the work itself

Subsystems: networking drivers, the rest

2 messages, 2 authors, 2009-08-03 · open the first message on its own page

atl1c: Do not call cancel_work_sync from the work itself

From: <hidden>
Date: 2009-08-03 05:32:18

Signed-off-by: jie yang <jie.yang>@atheros.com
---
diff --git a/drivers/net/atl1c/atl1c.h b/drivers/net/atl1c/atl1c.h
index 2a1120a..53242dc 100644
--- a/drivers/net/atl1c/atl1c.h
+++ b/drivers/net/atl1c/atl1c.h
@@ -427,6 +427,7 @@ struct atl1c_hw {
 #define ATL1C_ASPM_CTRL_MON        0x0200
 #define ATL1C_HIB_DISABLE      0x0400
 #define ATL1C_LINK_CAP_1000M       0x0800
+#define ATL1C_RESET_IN_WORK        0x1000
 #define ATL1C_FPGA_VERSION     0x8000
    u16 cmb_tpd;
    u16 cmb_rrd;
diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c
index 1d601ce..dec88fa 100644
--- a/drivers/net/atl1c/atl1c_main.c
+++ b/drivers/net/atl1c/atl1c_main.c
@@ -321,7 +321,10 @@ static void atl1c_del_timer(struct atl1c_adapter *adapter)
 
 static void atl1c_cancel_work(struct atl1c_adapter *adapter)
 {
-   cancel_work_sync(&adapter->reset_task);
+   if (adapter->hw.ctrl_flags & ATL1C_RESET_IN_WORK)
+       adapter->hw.ctrl_flags &= ~ATL1C_RESET_IN_WORK;/* clear the flag */
+   else
+       cancel_work_sync(&adapter->reset_task);
    cancel_work_sync(&adapter->link_chg_task);
 }
 
@@ -1544,6 +1547,7 @@ static irqreturn_t atl1c_intr(int irq, void *data)
            /* reset MAC */
            hw->intr_mask &= ~ISR_ERROR;
            AT_WRITE_REG(hw, REG_IMR, hw->intr_mask);
+           adapter->hw.ctrl_flags |= ATL1C_RESET_IN_WORK;
            schedule_work(&adapter->reset_task);
            break;
        }

Re: atl1c: Do not call cancel_work_sync from the work itself

From: David Miller <davem@davemloft.net>
Date: 2009-08-03 20:20:42

From: <redacted>
Date: Mon, 3 Aug 2009 13:32:19 +0800
Signed-off-by: jie yang <jie.yang>@atheros.com
Your entire email address should be surrounded by '<' and '>'
characters, not just your username, in the signoff.

Also, please provide a more detailed commit message.  Explain what
goes wrong in the current code (when happens when a work is cancelled
within itself, I was under the impression that this works just fine
and is just a NOP), and the basic description of your solution.
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