On 4/10/19 6:51 PM, xiaojiangfeng wrote: > My pleasure. > > I am very new to sparse. > > I guess the warning is caused by the macro min. I think the warning is likely because the type of data is 'void *'. Removing the (int) cast is a good fix, but does not resolve the sparse warning. -Frank > Then I submitted my changes. > > Thanks for code review. > > > -----邮件原件----- > 发件人: Frank Rowand [mailto:frowand.list@xxxxxxxxx] > 发送时间: 2019年4月11日 2:50 > 收件人: xiaojiangfeng <xiaojiangfeng@xxxxxxxxxx>; robh+dt@xxxxxxxxxx; robh@xxxxxxxxxx > 抄送: devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > 主题: Re: [PATCH] of: del redundant type conversion > > On 4/10/19 1:29 AM, xiaojiangfeng wrote: >> The type of variable l in early_init_dt_scan_chosen is int, there is >> no need to convert to int. >> >> Signed-off-by: xiaojiangfeng <xiaojiangfeng@xxxxxxxxxx> >> --- >> drivers/of/fdt.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index >> 4734223..de893c9 100644 >> --- a/drivers/of/fdt.c >> +++ b/drivers/of/fdt.c >> @@ -1091,7 +1091,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname, >> /* Retrieve command line */ >> p = of_get_flat_dt_prop(node, "bootargs", &l); >> if (p != NULL && l > 0) >> - strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE)); >> + strlcpy(data, p, min(l, COMMAND_LINE_SIZE)); >> >> /* >> * CONFIG_CMDLINE is meant to be a default in case nothing else >> > > Thanks for catching the redundant cast. > > There is a second problem detected by sparse on that line: > > drivers/of/fdt.c:1094:34: warning: expression using sizeof(void) > > Can you please fix both issues? > > Thanks, > > Frank >
