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pciehp: block signals while waiting for command completion 

Since we need to wait for command completion for muximum 1sec, waiting
command should not be interrupted by a signal.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Kenji Kaneshige 2008-05-28 14:59:44 +09:00 committed by Jesse Barnes
parent 125c39f7d2
commit d737bdc141
1 changed files with 4 additions and 12 deletions
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16
drivers/pci/hotplug/pciehp_hpc.c
View File

@ -268,9 +268,8 @@ completed:
return timeout;
}
static inline int pcie_wait_cmd(struct controller *ctrl, int poll)
static inline void pcie_wait_cmd(struct controller *ctrl, int poll)
{
int retval = 0;
unsigned int msecs = pciehp_poll_mode ? 2500 : 1000;
unsigned long timeout = msecs_to_jiffies(msecs);
int rc;
@ -278,16 +277,9 @@ static inline int pcie_wait_cmd(struct controller *ctrl, int poll)
if (poll)
rc = pcie_poll_cmd(ctrl);
else
rc = wait_event_interruptible_timeout(ctrl->queue,
!ctrl->cmd_busy, timeout);
rc = wait_event_timeout(ctrl->queue, !ctrl->cmd_busy, timeout);
if (!rc)
dbg("Command not completed in 1000 msec\n");
else if (rc < 0) {
retval = -EINTR;
info("Command was interrupted by a signal\n");
}
return retval;
}
/**
@ -365,7 +357,7 @@ static int pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)
if (!(slot_ctrl & HP_INTR_ENABLE) ||
!(slot_ctrl & CMD_CMPL_INTR_ENABLE))
poll = 1;
retval = pcie_wait_cmd(ctrl, poll);
pcie_wait_cmd(ctrl, poll);
}
out:
mutex_unlock(&ctrl->ctrl_lock);
@ -797,7 +789,7 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
if (intr_loc & CMD_COMPLETED) {
ctrl->cmd_busy = 0;
smp_mb();
wake_up_interruptible(&ctrl->queue);
wake_up(&ctrl->queue);
}
if (!(intr_loc & ~CMD_COMPLETED))