On Wed, Jul 11, 2018 at 7:20 AM, kbuild test robot <lkp@xxxxxxxxx> wrote: > Hi Jernej, > > Thank you for the patch! Perhaps something to improve: > > [auto build test WARNING on next-20180710] > [cannot apply to sunxi/sunxi/for-next drm/drm-next robh/for-next v4.18-rc4 v4.18-rc3 v4.18-rc2 v4.18-rc4] > [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/Jernej-Skrabec/Allwinner-R40-HDMI-refactoring/20180711-043932 > config: arm64-allyesconfig (attached as .config) > compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > GCC_VERSION=7.2.0 make.cross ARCH=arm64 > > All warnings (new ones prefixed by >>): > > In file included from include/linux/kernel.h:10:0, > from include/linux/list.h:9, > from include/linux/agp_backend.h:33, > from include/drm/drmP.h:35, > from drivers/gpu//drm/sun4i/sun8i_tcon_top.c:4: > drivers/gpu//drm/sun4i/sun8i_tcon_top.c: In function 'sun8i_tcon_top_register_gate': > include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] > #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) > ^ > include/linux/compiler.h:77:42: note: in definition of macro 'unlikely' > # define unlikely(x) __builtin_expect(!!(x), 0) > ^ >>> drivers/gpu//drm/sun4i/sun8i_tcon_top.c:56:6: note: in expansion of macro 'IS_ERR_VALUE' > if (IS_ERR_VALUE(index)) > ^~~~~~~~~~~~ > > vim +/IS_ERR_VALUE +56 drivers/gpu//drm/sun4i/sun8i_tcon_top.c > > 3 > > 4 #include <drm/drmP.h> > 5 > 6 #include <dt-bindings/clock/sun8i-tcon-top.h> > 7 > 8 #include <linux/bitfield.h> > 9 #include <linux/component.h> > 10 #include <linux/device.h> > 11 #include <linux/module.h> > 12 #include <linux/of_graph.h> > 13 #include <linux/platform_device.h> > 14 > 15 #include "sun8i_tcon_top.h" > 16 > 17 static int sun8i_tcon_top_get_connected_ep_id(struct device_node *node, > 18 int port_id) > 19 { > 20 struct device_node *ep, *remote, *port; > 21 struct of_endpoint endpoint; > 22 > 23 port = of_graph_get_port_by_id(node, port_id); > 24 if (!port) > 25 return -ENOENT; > 26 > 27 for_each_available_child_of_node(port, ep) { > 28 remote = of_graph_get_remote_port_parent(ep); > 29 if (!remote) > 30 continue; > 31 > 32 if (of_device_is_available(remote)) { > 33 of_graph_parse_endpoint(ep, &endpoint); > 34 > 35 of_node_put(remote); > 36 > 37 return endpoint.id; > 38 } > 39 > 40 of_node_put(remote); > 41 } > 42 > 43 return -ENOENT; > 44 } > 45 > 46 static struct clk_hw *sun8i_tcon_top_register_gate(struct device *dev, > 47 const char *parent, > 48 void __iomem *regs, > 49 spinlock_t *lock, > 50 u8 bit, int name_index) > 51 { > 52 const char *clk_name, *parent_name; > 53 int ret, index; > 54 > 55 index = of_property_match_string(dev->of_node, "clock-names", parent); > > 56 if (IS_ERR_VALUE(index)) Yeah. This is incorrect usage. IS_ERR_VALUE should be used on pointers. Checking for a negative value here should suffice. ChenYu > 57 return ERR_PTR(index); > 58 > 59 parent_name = of_clk_get_parent_name(dev->of_node, index); > 60 > 61 ret = of_property_read_string_index(dev->of_node, > 62 "clock-output-names", name_index, > 63 &clk_name); > 64 if (ret) > 65 return ERR_PTR(ret); > 66 > 67 return clk_hw_register_gate(dev, clk_name, parent_name, > 68 CLK_SET_RATE_PARENT, > 69 regs + TCON_TOP_GATE_SRC_REG, > 70 bit, 0, lock); > 71 }; > 72 > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
