From: Huacai Chen <che...@lemote.com>

This patch try to fix the building error on MIPS. The reason is MIPS
has already defined the PTR macro, which conflicts with the PTR macro
in include/uapi/linux/bcache.h.

[fixed by mlyle: corrected a line-length issue]

Cc: sta...@vger.kernel.org
Signed-off-by: Huacai Chen <che...@lemote.com>
Reviewed-by: Michael Lyle <ml...@lyle.org>
Signed-off-by: Michael Lyle <ml...@lyle.org>
---
 drivers/md/bcache/alloc.c   | 2 +-
 drivers/md/bcache/extents.c | 2 +-
 drivers/md/bcache/journal.c | 2 +-
 include/uapi/linux/bcache.h | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/md/bcache/alloc.c b/drivers/md/bcache/alloc.c
index a27d85232ce1..a0cc1bc6d884 100644
--- a/drivers/md/bcache/alloc.c
+++ b/drivers/md/bcache/alloc.c
@@ -490,7 +490,7 @@ int __bch_bucket_alloc_set(struct cache_set *c, unsigned 
reserve,
                if (b == -1)
                        goto err;
 
-               k->ptr[i] = PTR(ca->buckets[b].gen,
+               k->ptr[i] = MAKE_PTR(ca->buckets[b].gen,
                                bucket_to_sector(c, b),
                                ca->sb.nr_this_dev);
 
diff --git a/drivers/md/bcache/extents.c b/drivers/md/bcache/extents.c
index 41c238fc3733..f9d391711595 100644
--- a/drivers/md/bcache/extents.c
+++ b/drivers/md/bcache/extents.c
@@ -585,7 +585,7 @@ static bool bch_extent_merge(struct btree_keys *bk, struct 
bkey *l, struct bkey
                return false;
 
        for (i = 0; i < KEY_PTRS(l); i++)
-               if (l->ptr[i] + PTR(0, KEY_SIZE(l), 0) != r->ptr[i] ||
+               if (l->ptr[i] + MAKE_PTR(0, KEY_SIZE(l), 0) != r->ptr[i] ||
                    PTR_BUCKET_NR(b->c, l, i) != PTR_BUCKET_NR(b->c, r, i))
                        return false;
 
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index 5018c56ebb67..a87165c1d8e5 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -512,7 +512,7 @@ static void journal_reclaim(struct cache_set *c)
                        continue;
 
                ja->cur_idx = next;
-               k->ptr[n++] = PTR(0,
+               k->ptr[n++] = MAKE_PTR(0,
                                  bucket_to_sector(c, ca->sb.d[ja->cur_idx]),
                                  ca->sb.nr_this_dev);
        }
diff --git a/include/uapi/linux/bcache.h b/include/uapi/linux/bcache.h
index 90fc490f973f..821f71a2e48f 100644
--- a/include/uapi/linux/bcache.h
+++ b/include/uapi/linux/bcache.h
@@ -91,7 +91,7 @@ PTR_FIELD(PTR_GEN,                    0,  8)
 
 #define PTR_CHECK_DEV                  ((1 << PTR_DEV_BITS) - 1)
 
-#define PTR(gen, offset, dev)                                          \
+#define MAKE_PTR(gen, offset, dev)                                     \
        ((((__u64) dev) << 51) | ((__u64) offset) << 8 | gen)
 
 /* Bkey utility code */
-- 
2.14.1

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