iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

RDMA/nes: Fix incorrect unlock in nes_process_mac_intr()

Browse Source 
Commit ce6e74f2 ("RDMA/nes: Make nesadapter->phy_lock usage
consistent") introduced a problem where phy_lock was only unlocked
within an if statement and so nes_process_mac_intr() could return with
phy_lock still held.  Fix this.

This was discovered because of the sparse warning:

    drivers/infiniband/hw/nes/nes_hw.c:2643:9: warning: context imbalance in 'nes_process_mac_intr' - different lock contexts for basic block

Reported-by: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Chien Tung 2010-05-25 10:13:09 -05:00 committed by Roland Dreier
parent df02902313
commit b17e0969dc
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/infiniband/hw/nes/nes_hw.c
View File

@ -2584,7 +2584,6 @@ static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number)
break;
}
}
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
if (phy_data & 0x0004) {
if (wide_ppm_offset &&
@ -2639,6 +2638,8 @@ static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number)
}
}
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
nesadapter->mac_sw_state[mac_number] = NES_MAC_SW_IDLE;
}