linux-sg2042/drivers/net/ixgb
Jesse Brandeburg 945a51517c intel drivers: repair missing flush operations
after review of all intel drivers, found several instances where
drivers had the incorrect pattern of:
memory mapped write();
delay();

which should always be:
memory mapped write();
write flush(); /* aka memory mapped read */
delay();

explanation:
The reason for including the flush is that writes can be held
(posted) in PCI/PCIe bridges, but the read always has to complete
synchronously and therefore has to flush all pending writes to a
device.  If a write is held and followed by a delay, the delay
means nothing because the write may not have reached hardware
(maybe even not until the next read)

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by:  Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-04 04:59:07 -07:00
..
Makefile ixgb: update copyright dates and versions 2008-07-11 01:20:31 -04:00
ixgb.h ixgb: convert to set_phys_id 2011-05-04 12:07:41 -07:00
ixgb_ee.c intel drivers: repair missing flush operations 2011-08-04 04:59:07 -07:00
ixgb_ee.h ixgb: update copyright dates and versions 2008-07-11 01:20:31 -04:00
ixgb_ethtool.c ixgb: convert to set_phys_id 2011-05-04 12:07:41 -07:00
ixgb_hw.c intel drivers: repair missing flush operations 2011-08-04 04:59:07 -07:00
ixgb_hw.h ixgb: Use pr_<level> and netdev_<level> 2010-04-27 12:53:30 -07:00
ixgb_ids.h ixgb: update copyright dates and versions 2008-07-11 01:20:31 -04:00
ixgb_main.c Add appropriate <linux/prefetch.h> include for prefetch users 2011-05-22 21:41:57 -07:00
ixgb_osdep.h ixgb: Use pr_<level> and netdev_<level> 2010-04-27 12:53:30 -07:00
ixgb_param.c Intel Wired LAN drivers: Use static const 2010-12-10 22:12:32 -08:00