diff options
| author | Alexander Schmidt <alexs@linux.vnet.ibm.com> | 2009-12-09 10:11:04 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-12-09 10:11:04 -0800 |
| commit | 9420269428b3dc80c98e52beac60a3976fbef7d2 (patch) | |
| tree | b2b43bbaa396613434143efe79b00b15eed690f1 /drivers/infiniband/hw/ehca/ehca_eq.c | |
| parent | 91d3f9bacdb4950d2f79fe2ba296aa249f60d06c (diff) | |
IB/ehca: Rework destroy_eq()
The ibmebus_free_irq() function, which might sleep, was called with
interrupts disabled. To fix this, make sure that no interrupts are
running by killing the interrupt tasklet. Also lock the
shca_list_lock to protect against the poll_eqs_timer running
concurrently.
Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_eq.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_eq.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_eq.c b/drivers/infiniband/hw/ehca/ehca_eq.c index 523e733c630e..3b87589b8ea0 100644 --- a/drivers/infiniband/hw/ehca/ehca_eq.c +++ b/drivers/infiniband/hw/ehca/ehca_eq.c @@ -169,12 +169,15 @@ int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq) unsigned long flags; u64 h_ret; - spin_lock_irqsave(&eq->spinlock, flags); ibmebus_free_irq(eq->ist, (void *)shca); - h_ret = hipz_h_destroy_eq(shca->ipz_hca_handle, eq); + spin_lock_irqsave(&shca_list_lock, flags); + eq->is_initialized = 0; + spin_unlock_irqrestore(&shca_list_lock, flags); - spin_unlock_irqrestore(&eq->spinlock, flags); + tasklet_kill(&eq->interrupt_task); + + h_ret = hipz_h_destroy_eq(shca->ipz_hca_handle, eq); if (h_ret != H_SUCCESS) { ehca_err(&shca->ib_device, "Can't free EQ resources."); |