On Wed, 10 Mar 2021 02:26:24 +0000, zhangqing <zhangqing@xxxxxxxxxxx> wrote: > > > On 03/09/2021 05:10 PM, Marc Zyngier wrote: > > > >> + > >> +static void __iomem *liointc_get_reg_byname(struct device_node *node, > >> + const char *name) > >> +{ > >> + int index = of_property_match_string(node, "reg-names", name); > >> + > >> + return of_iomap(node, index); > > So if of_property_match_string() returns an error, you feed that error > > to of_iomap()? Somehow, I don't think that's a good idea. > > Hi, Marc > > Thank you for your suggestion, error handling is missing here, > > + if (index <0) > + return NULL; > > return of_iomap(node, index); > > It has been fixed in the fourth version, and I will send V4 soon. > > > + if (of_device_is_compatible(node, "loongson,liointc-2.0")) { > > + base = liointc_get_reg_byname(node, "main"); > > + if (!base) { > > + err = -ENODEV; > > + goto out_free_priv; > > + } > > + for (i = 0; i < LIOINTC_NUM_CORES; i++) { > > + priv->core_isr[i] = > > + liointc_get_reg_byname(node, core_reg_names[i]); > > Please write assignments on a single line. > > In addition, write assignments on a single line > > for (i = 0; i <LIOINTC_NUM_CORES; i++) > priv->core_isr[i] = > liointc_get_reg_byname(node, core_reg_names[i]); > > It is 92 characters, more than 80 characters... I really don't care about whatever arbitrary limit people think there is. Please put it on a single line. Thanks, M. -- Without deviation from the norm, progress is not possible.