# git rev-parse -q --verify 13a83eac373c49c0a081cbcd137e79210fe78acd^{commit}
13a83eac373c49c0a081cbcd137e79210fe78acd
already have revision, skipping fetch
# git checkout -q -f -B kisskb 13a83eac373c49c0a081cbcd137e79210fe78acd
# git clean -qxdf
# < git log -1
# commit 13a83eac373c49c0a081cbcd137e79210fe78acd
# Author: Michael Neuling <mikey@neuling.org>
# Date:   Wed Apr 11 13:37:58 2018 +1000
# 
#     powerpc/eeh: Fix enabling bridge MMIO windows
#     
#     On boot we save the configuration space of PCIe bridges. We do this so
#     when we get an EEH event and everything gets reset that we can restore
#     them.
#     
#     Unfortunately we save this state before we've enabled the MMIO space
#     on the bridges. Hence if we have to reset the bridge when we come back
#     MMIO is not enabled and we end up taking an PE freeze when the driver
#     starts accessing again.
#     
#     This patch forces the memory/MMIO and bus mastering on when restoring
#     bridges on EEH. Ideally we'd do this correctly by saving the
#     configuration space writes later, but that will have to come later in
#     a larger EEH rewrite. For now we have this simple fix.
#     
#     The original bug can be triggered on a boston machine by doing:
#       echo 0x8000000000000000 > /sys/kernel/debug/powerpc/PCI0001/err_injct_outbound
#     On boston, this PHB has a PCIe switch on it.  Without this patch,
#     you'll see two EEH events, 1 expected and 1 the failure we are fixing
#     here. The second EEH event causes the anything under the PHB to
#     disappear (i.e. the i40e eth).
#     
#     With this patch, only 1 EEH event occurs and devices properly recover.
#     
#     Fixes: 652defed4875 ("powerpc/eeh: Check PCIe link after reset")
#     Cc: stable@vger.kernel.org # v3.11+
#     Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
#     Signed-off-by: Michael Neuling <mikey@neuling.org>
#     Acked-by: Russell Currey <ruscur@russell.cc>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-gcc --version
# < git log --format=%s --max-count=1 13a83eac373c49c0a081cbcd137e79210fe78acd
# < make -s -j 8 ARCH=ia64 O=/kisskb/build/powerpc-fixes_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-  defconfig
# make -s -j 8 ARCH=ia64 O=/kisskb/build/powerpc-fixes_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-  
<stdin>:1185:2: warning: #warning syscall perf_event_open not implemented [-Wcpp]
<stdin>:1239:2: warning: #warning syscall seccomp not implemented [-Wcpp]
<stdin>:1317:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp]
<stdin>:1320:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp]
<stdin>:1323:2: warning: #warning syscall pkey_free not implemented [-Wcpp]
<stdin>:1326:2: warning: #warning syscall statx not implemented [-Wcpp]
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/vmstat.c: In function 'sysctl_vm_numa_stat_handler':
/kisskb/src/mm/vmstat.c:89:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/fork.c:693:13: warning: 'task_struct_whitelist' defined but not used [-Wunused-function]
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1433:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence':
/kisskb/src/drivers/dma-buf/reservation.c:207:2: warning: 'k' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/dma-buf/reservation.c:160:17: note: 'k' was declared here
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2041:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:340:21: note: 'pdeo' was declared here
No errors detected in 21126 functions.
  Kernel: vmlinux.gz is ready
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_ia64-defconfig_ia64
# Build took: 0:02:36.216468