Re: [PATCH v6] drivers/staging: Gasket driver framework + Apex driver

[kbuild test robot]

Hi Simon,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on staging/staging-testing]
[also build test ERROR on v4.18-rc2 next-20180629]
[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/Simon-Que/drivers-staging-Gasket-driver-framework-Apex-driver/20180630-080504
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from drivers/staging/gasket/gasket_core.c:16:0:
   drivers/staging/gasket/gasket_core.h: In function 'gasket_dev_read_64':
>> drivers/staging/gasket/gasket_core.h:658:9: error: implicit declaration of function 'readq'; did you mean 'readl'? [-Werror=implicit-function-declaration]
     return readq(&gasket_dev->bar_data[bar].virt_base[location]);
            ^~~~~
            readl
   drivers/staging/gasket/gasket_core.h: In function 'gasket_dev_write_64':
   drivers/staging/gasket/gasket_core.h:664:2: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration]
     writeq(value, &dev->bar_data[bar].virt_base[location]);
     ^~~~~~
     writel
   cc1: some warnings being treated as errors
--
   In file included from drivers/staging/gasket/gasket_ioctl.h:15:0,
                    from drivers/staging/gasket/gasket_ioctl.c:13:
   drivers/staging/gasket/gasket_core.h: In function 'gasket_dev_read_64':
>> drivers/staging/gasket/gasket_core.h:658:9: error: implicit declaration of function 'readq'; did you mean 'readl'? [-Werror=implicit-function-declaration]
     return readq(&gasket_dev->bar_data[bar].virt_base[location]);
            ^~~~~
            readl
   drivers/staging/gasket/gasket_core.h: In function 'gasket_dev_write_64':
   drivers/staging/gasket/gasket_core.h:664:2: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration]
     writeq(value, &dev->bar_data[bar].virt_base[location]);
     ^~~~~~
     writel
   drivers/staging/gasket/gasket_ioctl.c: In function 'gasket_config_coherent_allocator':
   drivers/staging/gasket/gasket_ioctl.c:442:27: error: passing argument 3 of 'gasket_alloc_coherent_memory' from incompatible pointer type [-Werror=incompatible-pointer-types]
       gasket_dev, ibuf.size, &ibuf.dma_address,
                              ^
   In file included from drivers/staging/gasket/gasket_ioctl.c:18:0:
   drivers/staging/gasket/gasket_page_table.h:240:5: note: expected 'dma_addr_t * {aka unsigned int *}' but argument is of type 'u64 * {aka long long unsigned int *}'
    int gasket_alloc_coherent_memory(struct gasket_dev *gasket_dev, uint64_t size,
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
   In file included from drivers/staging/gasket/gasket_page_table.h:26:0,
                    from drivers/staging/gasket/gasket_page_table.c:41:
   drivers/staging/gasket/gasket_core.h: In function 'gasket_dev_read_64':
>> drivers/staging/gasket/gasket_core.h:658:9: error: implicit declaration of function 'readq'; did you mean 'readl'? [-Werror=implicit-function-declaration]
     return readq(&gasket_dev->bar_data[bar].virt_base[location]);
            ^~~~~
            readl
   drivers/staging/gasket/gasket_core.h: In function 'gasket_dev_write_64':
   drivers/staging/gasket/gasket_core.h:664:2: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration]
     writeq(value, &dev->bar_data[bar].virt_base[location]);
     ^~~~~~
     writel
   drivers/staging/gasket/gasket_page_table.c: In function 'gasket_is_extended_dev_addr_bad':
   drivers/staging/gasket/gasket_page_table.c:1388:11: warning: right shift count >= width of type [-Wshift-count-overflow]
     if (addr >> (GASKET_EXTENDED_LVL0_WIDTH + GASKET_EXTENDED_LVL0_SHIFT)) {
              ^~
   drivers/staging/gasket/gasket_page_table.c: In function 'gasket_alloc_coherent_memory':
   drivers/staging/gasket/gasket_page_table.c:1694:4: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
       (u64)mem + j * PAGE_SIZE;
       ^
   cc1: some warnings being treated as errors

vim +658 drivers/staging/gasket/gasket_core.h

   627	
   628	/*
   629	 * Memory management functions. These will likely be spun off into their own
   630	 * file in the future.
   631	 */
   632	
   633	/* Unmaps the specified mappable region from a VMA. */
   634	int gasket_mm_unmap_region(
   635		const struct gasket_dev *gasket_dev, struct vm_area_struct *vma,
   636		const struct gasket_mappable_region *map_region);
   637	
   638	/*
   639	 * Get the ioctl permissions callback.
   640	 * @gasket_dev: Gasket device structure.
   641	 */
   642	gasket_ioctl_permissions_cb_t gasket_get_ioctl_permissions_cb(
   643		struct gasket_dev *gasket_dev);
   644	
   645	/**
   646	 * Lookup a name by number in a num_name table.
   647	 * @num: Number to lookup.
   648	 * @table: Array of num_name structures, the table for the lookup.
   649	 *
   650	 */
   651	const char *gasket_num_name_lookup(
   652		uint num, const struct gasket_num_name *table);
   653	
   654	/* Handy inlines */
   655	static inline ulong gasket_dev_read_64(
   656		struct gasket_dev *gasket_dev, int bar, ulong location)
   657	{
 > 658		return readq(&gasket_dev->bar_data[bar].virt_base[location]);
   659	}
   660	

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