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authorWolfram Sang <wsa@the-dreams.de>2018-12-11 20:58:20 +0100
committerWolfram Sang <wsa@the-dreams.de>2018-12-11 20:58:20 +0100
commit66693960f574aa830986e1603657af36423b24eb (patch)
tree035aae54d64d79e514f95e18cc3dcf411a98c55e /drivers/base/devres.c
parent3ca3f86f7f4856222a8b697d60d32717160a1a1b (diff)
parent40e020c129cfc991e8ab4736d2665351ffd1468d (diff)
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Merge tag 'v4.20-rc6' into i2c/for-5.0
Linux 4.20-rc6
Diffstat (limited to 'drivers/base/devres.c')
-rw-r--r--drivers/base/devres.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index 4aaf00d2098b..e038e2b3b7ea 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -26,8 +26,14 @@ struct devres_node {
struct devres {
struct devres_node node;
- /* -- 3 pointers */
- unsigned long long data[]; /* guarantee ull alignment */
+ /*
+ * Some archs want to perform DMA into kmalloc caches
+ * and need a guaranteed alignment larger than
+ * the alignment of a 64-bit integer.
+ * Thus we use ARCH_KMALLOC_MINALIGN here and get exactly the same
+ * buffer alignment as if it was allocated by plain kmalloc().
+ */
+ u8 __aligned(ARCH_KMALLOC_MINALIGN) data[];
};
struct devres_group {