[PATCH v2 2/2] fpga: Add support for Xilinx LogiCORE PR Decoupler
kbuild test robot
lkp at intel.com
Sun Mar 19 10:48:01 PDT 2017
Hi Moritz,
[auto build test WARNING on linus/master]
[also build test WARNING on v4.11-rc2 next-20170310]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Moritz-Fischer/doc-Add-bindings-document-for-Xilinx-LogiCore-PR-Decoupler/20170320-005406
config: alpha-allyesconfig (attached as .config)
compiler: alpha-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=alpha
All warnings (new ones prefixed by >>):
drivers/fpga/xilinx-pr-decoupler.c: In function 'xlnx_pr_decoupler_enable_set':
>> drivers/fpga/xilinx-pr-decoupler.c:26:26: warning: large integer implicitly truncated to unsigned type [-Woverflow]
#define CTRL_CMD_COUPLE ~BIT(0)
^
>> drivers/fpga/xilinx-pr-decoupler.c:43:10: note: in expansion of macro 'CTRL_CMD_COUPLE'
writel(CTRL_CMD_COUPLE, priv->io_base);
^~~~~~~~~~~~~~~
vim +26 drivers/fpga/xilinx-pr-decoupler.c
20 #include <linux/kernel.h>
21 #include <linux/of_device.h>
22 #include <linux/module.h>
23 #include <linux/fpga/fpga-bridge.h>
24
25 #define CTRL_CMD_DECOUPLE BIT(0)
> 26 #define CTRL_CMD_COUPLE ~BIT(0)
27
28 struct xlnx_pr_decoupler_data {
29 void __iomem *io_base;
30 struct clk *clk;
31 };
32
33 static int xlnx_pr_decoupler_enable_set(struct fpga_bridge *bridge, bool enable)
34 {
35 int err;
36 struct xlnx_pr_decoupler_data *priv = bridge->priv;
37
38 err = clk_enable(priv->clk);
39 if (err)
40 return err;
41
42 if (enable)
> 43 writel(CTRL_CMD_COUPLE, priv->io_base);
44 else
45 writel(CTRL_CMD_DECOUPLE, priv->io_base);
46
---
0-DAY kernel test infrastructure Open Source Technology Center
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