Hi Dong, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on clk/clk-next] [also build test WARNING on v4.16-rc6 next-20180323] [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/Dong-Aisheng/clk-new-APIs-to-handle-all-available-clocks/20180323-185821 base: https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next smatch warnings: drivers/video/fbdev/simplefb.c:222 simplefb_clocks_get() warn: unsigned 'par->clk_count' is never less than zero. vim +222 drivers/video/fbdev/simplefb.c 193 194 #if defined CONFIG_OF && defined CONFIG_COMMON_CLK 195 /* 196 * Clock handling code. 197 * 198 * Here we handle the clocks property of our "simple-framebuffer" dt node. 199 * This is necessary so that we can make sure that any clocks needed by 200 * the display engine that the bootloader set up for us (and for which it 201 * provided a simplefb dt node), stay up, for the life of the simplefb 202 * driver. 203 * 204 * When the driver unloads, we cleanly disable, and then release the clocks. 205 * 206 * We only complain about errors here, no action is taken as the most likely 207 * error can only happen due to a mismatch between the bootloader which set 208 * up simplefb, and the clock definitions in the device tree. Chances are 209 * that there are no adverse effects, and if there are, a clean teardown of 210 * the fb probe will not help us much either. So just complain and carry on, 211 * and hope that the user actually gets a working fb at the end of things. 212 */ 213 static int simplefb_clocks_get(struct simplefb_par *par, 214 struct platform_device *pdev) 215 { 216 struct device_node *np = pdev->dev.of_node; 217 218 if (dev_get_platdata(&pdev->dev) || !np) 219 return 0; 220 221 par->clk_count = clk_bulk_get_all(&pdev->dev, &par->clks); > 222 if ((par->clk_count < 0) && (par->clk_count == -EPROBE_DEFER)) 223 return -EPROBE_DEFER; 224 225 return 0; 226 } 227 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
