Hi Tero, I love your patch! Yet something to improve: [auto build test ERROR on keystone/next] [also build test ERROR on v4.20-rc3 next-20181122] [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/Roger-Quadros/Add-support-for-TI-PRU-ICSS/20181123-083903 base: https://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git next config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-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=arm All error/warnings (new ones prefixed by >>): In file included from drivers/soc/ti/pruss_intc.c:16:0: >> include/linux/pruss.h:39:32: warning: 'struct rproc' declared inside parameter list will not be visible outside of this definition or declaration struct pruss *pruss_get(struct rproc *rproc); ^~~~~ -- In file included from drivers/soc/ti/pruss.c:15:0: >> include/linux/pruss.h:39:32: warning: 'struct rproc' declared inside parameter list will not be visible outside of this definition or declaration struct pruss *pruss_get(struct rproc *rproc); ^~~~~ >> drivers/soc/ti/pruss.c:34:15: error: conflicting types for 'pruss_get' struct pruss *pruss_get(struct rproc *rproc) ^~~~~~~~~ In file included from drivers/soc/ti/pruss.c:15:0: include/linux/pruss.h:39:15: note: previous declaration of 'pruss_get' was here struct pruss *pruss_get(struct rproc *rproc); ^~~~~~~~~ In file included from include/linux/linkage.h:7:0, from include/linux/kernel.h:7, from include/linux/list.h:9, from include/linux/kobject.h:19, from include/linux/device.h:16, from include/linux/dma-mapping.h:7, from drivers/soc/ti/pruss.c:10: drivers/soc/ti/pruss.c:58:19: error: conflicting types for 'pruss_get' EXPORT_SYMBOL_GPL(pruss_get); ^ include/linux/export.h:79:21: note: in definition of macro '___EXPORT_SYMBOL' extern typeof(sym) sym; \ ^~~ >> drivers/soc/ti/pruss.c:58:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL' EXPORT_SYMBOL_GPL(pruss_get); ^~~~~~~~~~~~~~~~~ In file included from drivers/soc/ti/pruss.c:15:0: include/linux/pruss.h:39:15: note: previous declaration of 'pruss_get' was here struct pruss *pruss_get(struct rproc *rproc); ^~~~~~~~~ -- In file included from drivers/soc//ti/pruss.c:15:0: >> include/linux/pruss.h:39:32: warning: 'struct rproc' declared inside parameter list will not be visible outside of this definition or declaration struct pruss *pruss_get(struct rproc *rproc); ^~~~~ drivers/soc//ti/pruss.c:34:15: error: conflicting types for 'pruss_get' struct pruss *pruss_get(struct rproc *rproc) ^~~~~~~~~ In file included from drivers/soc//ti/pruss.c:15:0: include/linux/pruss.h:39:15: note: previous declaration of 'pruss_get' was here struct pruss *pruss_get(struct rproc *rproc); ^~~~~~~~~ In file included from include/linux/linkage.h:7:0, from include/linux/kernel.h:7, from include/linux/list.h:9, from include/linux/kobject.h:19, from include/linux/device.h:16, from include/linux/dma-mapping.h:7, from drivers/soc//ti/pruss.c:10: drivers/soc//ti/pruss.c:58:19: error: conflicting types for 'pruss_get' EXPORT_SYMBOL_GPL(pruss_get); ^ include/linux/export.h:79:21: note: in definition of macro '___EXPORT_SYMBOL' extern typeof(sym) sym; \ ^~~ drivers/soc//ti/pruss.c:58:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL' EXPORT_SYMBOL_GPL(pruss_get); ^~~~~~~~~~~~~~~~~ In file included from drivers/soc//ti/pruss.c:15:0: include/linux/pruss.h:39:15: note: previous declaration of 'pruss_get' was here struct pruss *pruss_get(struct rproc *rproc); ^~~~~~~~~ vim +/pruss_get +34 drivers/soc/ti/pruss.c > 10 #include 11 #include 12 #include 13 #include 14 #include > 15 #include 16 #include 17 18 #include "pruss.h" 19 20 /** 21 * pruss_get() - get the pruss for a given PRU remoteproc 22 * @rproc: remoteproc handle of a PRU instance 23 * 24 * Finds the parent pruss device for a PRU given the @rproc handle of the 25 * PRU remote processor. This function increments the pruss device's refcount, 26 * so always use pruss_put() to decrement it back once pruss isn't needed 27 * anymore. 28 * 29 * Returns the pruss handle on success, and an ERR_PTR on failure using one 30 * of the following error values 31 * -EINVAL if invalid parameter 32 * -ENODEV if PRU device or PRUSS device is not found 33 */ > 34 struct pruss *pruss_get(struct rproc *rproc) 35 { 36 struct pruss *pruss; 37 struct device *dev; 38 struct platform_device *ppdev; 39 40 if (IS_ERR_OR_NULL(rproc)) 41 return ERR_PTR(-EINVAL); 42 43 dev = &rproc->dev; 44 if (!dev->parent) 45 return ERR_PTR(-ENODEV); 46 47 /* rudimentary check to make sure rproc handle is for a PRU */ 48 if (!strstr(dev_name(dev->parent), "pru")) 49 return ERR_PTR(-ENODEV); 50 51 ppdev = to_platform_device(dev->parent->parent); 52 pruss = platform_get_drvdata(ppdev); 53 if (pruss) 54 get_device(pruss->dev); 55 56 return pruss ? pruss : ERR_PTR(-ENODEV); 57 } > 58 EXPORT_SYMBOL_GPL(pruss_get); 59 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation