linux-kernel - Re: Linux 5.19-rc1

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Date:   Mon, 6 Jun 2022 18:51:02 +0700
From:   Ammar Faizi <ammarfaizi2@...weeb.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 5.19-rc1

On 6/6/22 7:42 AM, Linus Torvalds wrote:
> So hey, let's start calming things down and testing this all.

Doesn't compile with clang 15, the fix is there:

https://lore.kernel.org/lkml/20220523150521.2947108-1-nathan@kernel.org/

Error:
```
ammarfaizi2@...egral2:~/work/linux.work$ git log -n 1

commit f2906aa863381afb0015a9eb7fefad885d4e5a56 (HEAD -> master, tag: v5.19-rc1, @torvalds/linux/master)
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Sun Jun 5 17:18:54 2022 -0700

     Linux 5.19-rc1
ammarfaizi2@...egral2:~/work/linux.work$
ammarfaizi2@...egral2:~/work/linux.work$ taskset -c 0-7 make -j8 && taskset -c 0-7 make modules -j8
   DESCEND objtool
   CALL    scripts/atomic/check-atomics.sh
   CALL    scripts/checksyscalls.sh
   CHK     include/generated/compile.h
   CC [M]  drivers/misc/cardreader/rts5261.o
   CC [M]  drivers/misc/altera-stapl/altera-lpt.o
   CC [M]  drivers/misc/altera-stapl/altera-jtag.o
   CC [M]  drivers/misc/altera-stapl/altera-comp.o
drivers/misc/cardreader/rts5261.c:406:13: error: variable 'setting_reg2' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
         } else if (efuse_valid == 0) {
                    ^~~~~~~~~~~~~~~~
drivers/misc/cardreader/rts5261.c:412:30: note: uninitialized use occurs here
         pci_read_config_dword(pdev, setting_reg2, &lval2);
                                     ^~~~~~~~~~~~
drivers/misc/cardreader/rts5261.c:406:9: note: remove the 'if' if its condition is always true
         } else if (efuse_valid == 0) {
                ^~~~~~~~~~~~~~~~~~~~~~
drivers/misc/cardreader/rts5261.c:364:32: note: initialize the variable 'setting_reg2' to silence this warning
         u16 setting_reg1, setting_reg2;
                                       ^
                                        = 0
1 error generated.
make[3]: *** [scripts/Makefile.build:249: drivers/misc/cardreader/rts5261.o] Error 1
make[2]: *** [scripts/Makefile.build:466: drivers/misc/cardreader] Error 2
make[2]: *** Waiting for unfinished jobs....

```

-- 
Ammar Faizi