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| author | Ankit Kumar <ankit@linux.vnet.ibm.com> | 2017-04-27 14:33:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-20 15:31:04 +0300 |
| commit | e5590e3d92754b85629d2a06d70bb5b09c2165c9 (patch) | |
| tree | 5491dc5f7bb5dfbbd9e500da72aea0da8d92ba14 | |
| parent | e3d4daa7f6d47aeb7fd3ea95abc2937092d301eb (diff) | |
| download | linux-e5590e3d92754b85629d2a06d70bb5b09c2165c9.tar.xz | |
pstore: Fix flags to enable dumps on powerpc
commit 041939c1ec54208b42f5cd819209173d52a29d34 upstream.
After commit c950fd6f201a kernel registers pstore write based on flag set.
Pstore write for powerpc is broken as flags(PSTORE_FLAGS_DMESG) is not set for
powerpc architecture. On panic, kernel doesn't write message to
/fs/pstore/dmesg*(Entry doesn't gets created at all).
This patch enables pstore write for powerpc architecture by setting
PSTORE_FLAGS_DMESG flag.
Fixes: c950fd6f201a ("pstore: Split pstore fragile flags")
Signed-off-by: Ankit Kumar <ankit@linux.vnet.ibm.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/powerpc/kernel/nvram_64.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index d5e2b8309939..021db31b40ba 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -561,6 +561,7 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type, static struct pstore_info nvram_pstore_info = { .owner = THIS_MODULE, .name = "nvram", + .flags = PSTORE_FLAGS_DMESG, .open = nvram_pstore_open, .read = nvram_pstore_read, .write = nvram_pstore_write, |