linux-kernel - [PATCH] dmaengine: xilinx_dma: Remove __aligned attribute on zynqmp_dma_desc

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Message-Id: <20181025180525.28378-1-natechancellor@gmail.com>
Date:   Thu, 25 Oct 2018 11:05:25 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Michal Simek <michal.simek@...inx.com>,
        dmaengine@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <natechancellor@...il.com>
Subject: [PATCH] dmaengine: xilinx_dma: Remove __aligned attribute on zynqmp_dma_desc_ll

Clang warns:

drivers/dma/xilinx/zynqmp_dma.c:166:4: warning: attribute 'aligned' is
ignored, place it after "struct" to apply attribute to type declaration
[-Wignored-attributes]
}; __aligned(64)
   ^
./include/linux/compiler_types.h:200:38: note: expanded from macro
'__aligned'
#define __aligned(x)            __attribute__((aligned(x)))
                                               ^
1 warning generated.

As Nick pointed out in the previous version of this patch, the author
likely intended for this struct to be 8-byte (64-bit) aligned, not
64-byte, which is the default. Remove the hanging __aligned attribute.

Fixes: b0cc417c1637 ("dmaengine: Add Xilinx zynqmp dma engine driver support")
Reported-by: Nick Desaulniers <ndesaulniers@...gle.com>
Suggested-by: Nick Desaulniers <ndesaulniers@...gle.com>
Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
---
 drivers/dma/xilinx/zynqmp_dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
index c74a88b65039..73de6a6179fc 100644
--- a/drivers/dma/xilinx/zynqmp_dma.c
+++ b/drivers/dma/xilinx/zynqmp_dma.c
@@ -163,7 +163,7 @@ struct zynqmp_dma_desc_ll {
 	u32 ctrl;
 	u64 nxtdscraddr;
 	u64 rsvd;
-}; __aligned(64)
+};
 
 /**
  * struct zynqmp_dma_desc_sw - Per Transaction structure
-- 
2.19.1