and replace busy-wait by msleep.
Signed-off-by: Stefan Richter <[email protected]>
---
drivers/ieee1394/ohci1394.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
Index: linux/drivers/ieee1394/ohci1394.c
===================================================================
--- linux.orig/drivers/ieee1394/ohci1394.c
+++ linux/drivers/ieee1394/ohci1394.c
@@ -3199,15 +3199,16 @@ static int __devinit ohci1394_pci_probe(
/* Now enable LPS, which we need in order to start accessing
* most of the registers. In fact, on some cards (ALI M5251),
* accessing registers in the SClk domain without LPS enabled
- * will lock up the machine. Wait 50msec to make sure we have
- * full link enabled. */
+ * will lock up the machine. */
reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_LPS);
/* Disable and clear interrupts */
reg_write(ohci, OHCI1394_IntEventClear, 0xffffffff);
reg_write(ohci, OHCI1394_IntMaskClear, 0xffffffff);
- mdelay(50);
+ /* Flush MMIO writes and wait to make sure we have full link enabled. */
+ reg_read(ohci, OHCI1394_Version);
+ msleep(50);
/* Determine the number of available IR and IT contexts. */
ohci->nb_iso_rcv_ctx =
@@ -3422,7 +3423,8 @@ static int ohci1394_pci_resume(struct pc
reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_LPS);
reg_write(ohci, OHCI1394_IntEventClear, 0xffffffff);
reg_write(ohci, OHCI1394_IntMaskClear, 0xffffffff);
- mdelay(50);
+ reg_read(ohci, OHCI1394_Version);
+ msleep(50);
err = request_irq(dev->irq, ohci_irq_handler, IRQF_SHARED,
OHCI1394_DRIVER_NAME, ohci);
--
Stefan Richter
-=====-==--- ==-- --==-
http://arcgraph.de/sr/