On Thu, May 17, 2018 at 4:45 AM, Shawn Lin <shawn.lin@xxxxxxxxxxxxxx> wrote: > > On 2018/5/17 3:20, Mathieu Malaterre wrote: >> >> In commit 97548575bef3 ("mmc: block: Convert RPMB to a character device") >> a >> new function `mmc_rpmb_ioctl` was added. The final return is simply >> returning a value of `0` instead of propagating the correct return code. >> >> Discovered during a compilation with W=1, silence the following gcc >> warning >> >> drivers/mmc/core/block.c:2470:6: warning: variable βretβ set but not >> used [-Wunused-but-set-variable] >> > > Good catch! But hey, which gcc are you using now? Mine, gcc-linaro- > 6.3.1-2017.05-x86_64_aarch64-linux-gnu, with W=1 doesn't warn about > this. $ powerpc-linux-gnu-gcc --version powerpc-linux-gnu-gcc (Debian 6.3.0-18) 6.3.0 20170516 Copyright (C) 2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. This is the default powerpc cross compiler on Debian stable (no change). Config is simply a ppc32 (with some minor customization). > And it's worth backporting to stable. I am not familiar with the process, do I need to submit a v2 to add the line: Cc: <stable@xxxxxxxxxxxxxxx> # v4.15+ ? > Reviewed-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx> > > >> Signed-off-by: Mathieu Malaterre <malat@xxxxxxxxxx> >> --- >> drivers/mmc/core/block.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c >> index 9e923cd1d80e..38a7586b00cc 100644 >> --- a/drivers/mmc/core/block.c >> +++ b/drivers/mmc/core/block.c >> @@ -2485,7 +2485,7 @@ static long mmc_rpmb_ioctl(struct file *filp, >> unsigned int cmd, >> break; >> } >> - return 0; >> + return ret; >> } >> #ifdef CONFIG_COMPAT >> > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html