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| author |   Suresh Reddy <Suresh.Reddy@emulex.com> | 2015-03-20 06:28:25 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-03-20 13:25:51 -0400 |
| commit | 25848c9015964d9d97dffd48bbb88b75a25d0a1b (patch) | |
| tree | 0e321b8836c83eb8a757bfdaabb339b1ee938318 /lib | |
| parent | be2net: restrict MODIFY_EQ_DELAY cmd to a max of 8 EQs (diff) | |
| download | linux-dev-25848c9015964d9d97dffd48bbb88b75a25d0a1b.tar.xz linux-dev-25848c9015964d9d97dffd48bbb88b75a25d0a1b.zip | |
be2net: use PCI MMIO read instead of config read for errors
When an EEH error occurs, the device/slot is disconnected. This condition
is more reliably detected (i.e., returns all ones) with an MMIO read rather
than a config read -- especially on power platforms.
Hence, this patch fixes EEH error detection by replacing config reads with
MMIO reads for reading the error registers. The error registers in
Skyhawk-R/BE2/BE3 are accessible both via the config space and the
PCICFG (BAR0) memory space.
Reported-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Suresh Reddy <Suresh.Reddy@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions