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-Wmissing-braces in drivers/char/hw_random/optee-rng.c #369

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nathanchance opened this issue Feb 19, 2019 · 2 comments
Closed

-Wmissing-braces in drivers/char/hw_random/optee-rng.c #369

nathanchance opened this issue Feb 19, 2019 · 2 comments
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@nathanchance
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-Wmissing-braces [BUG] linux-next This is an issue only seen in linux-next [FIXED][LINUX] development cycle This bug was only present and fixed in a -next or -rc cycle

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@nathanchance
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drivers/char/hw_random/optee-rng.c:80:31: warning: suggest braces around initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:177:31: warning: suggest braces around initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:212:48: warning: suggest braces around initialization of subobject [-Wmissing-braces]
        struct tee_ioctl_open_session_arg sess_arg = {0};
                                                      ^
                                                      {}
3 warnings generated.

Patch sent: https://lore.kernel.org/lkml/20190219032240.22935-1-natechancellor@gmail.com/
@nathanchance nathanchance added [PATCH] Submitted A patch has been submitted for review -Wmissing-braces [BUG] linux-next This is an issue only seen in linux-next labels Feb 19, 2019
@nathanchance nathanchance self-assigned this Feb 19, 2019
@nickdesaulniers
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accepted: https://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc.git/commit/?h=arm/drivers&id=56410c0cb43e26a94af094aceab45a5ea38a1a38

@nickdesaulniers nickdesaulniers added [PATCH] Accepted A submitted patch has been accepted upstream and removed [PATCH] Submitted A patch has been submitted for review labels Feb 20, 2019
@nathanchance
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Fixed in next-20190221.

@nathanchance nathanchance added [FIXED][LINUX] development cycle This bug was only present and fixed in a -next or -rc cycle and removed [PATCH] Accepted A submitted patch has been accepted upstream labels Feb 21, 2019
ldts pushed a commit to ldts/linux that referenced this issue Jul 17, 2020
@nathanchance @ldts
hwrng: optee: Initialize some structs using memset instead of braces
1940ce1 
Clang warns:

drivers/char/hw_random/optee-rng.c:80:31: warning: suggest braces around
initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:177:31: warning: suggest braces
around initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:212:48: warning: suggest braces
around initialization of subobject [-Wmissing-braces]
        struct tee_ioctl_open_session_arg sess_arg = {0};
                                                      ^
                                                      {}
3 warnings generated.

One way to fix these warnings is to add additional braces like Clang
suggests; however, there has been a bit of push back from some
maintainers, who just prefer memset as it is unambiguous, doesn't
depend on a particular compiler version, and properly initializes all
subobjects [1][2]. Do that here so there are no more warnings.

[1]: https://lore.kernel.org/lkml/022e41c0-8465-dc7a-a45c-64187ecd9684@amd.com/
[2]: https://lore.kernel.org/lkml/20181128.215241.702406654469517539.davem@davemloft.net/

Fixes: 5fe8b1c ("hwrng: add OP-TEE based rng driver")
Link: ClangBuiltLinux#369
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ldts pushed a commit to ldts/linux that referenced this issue Jul 17, 2020
@nathanchance @ldts
[fio fromtree] hwrng: optee: Initialize some structs using memset ins…
936edf6 
…tead of braces

Clang warns:

drivers/char/hw_random/optee-rng.c:80:31: warning: suggest braces around
initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:177:31: warning: suggest braces
around initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:212:48: warning: suggest braces
around initialization of subobject [-Wmissing-braces]
        struct tee_ioctl_open_session_arg sess_arg = {0};
                                                      ^
                                                      {}
3 warnings generated.

One way to fix these warnings is to add additional braces like Clang
suggests; however, there has been a bit of push back from some
maintainers, who just prefer memset as it is unambiguous, doesn't
depend on a particular compiler version, and properly initializes all
subobjects [1][2]. Do that here so there are no more warnings.

[1]: https://lore.kernel.org/lkml/022e41c0-8465-dc7a-a45c-64187ecd9684@amd.com/
[2]: https://lore.kernel.org/lkml/20181128.215241.702406654469517539.davem@davemloft.net/

Fixes: 5fe8b1c ("hwrng: add OP-TEE based rng driver")
Link: ClangBuiltLinux#369
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ricardosalveti pushed a commit to foundriesio/linux that referenced this issue Sep 3, 2020
@nathanchance @ricardosalveti
[fio fromtree] hwrng: optee: Initialize some structs using memset ins…
5955db7 
…tead of braces

Clang warns:

drivers/char/hw_random/optee-rng.c:80:31: warning: suggest braces around
initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:177:31: warning: suggest braces
around initialization of subobject [-Wmissing-braces]
        struct tee_param param[4] = {0};
                                     ^
                                     {}
drivers/char/hw_random/optee-rng.c:212:48: warning: suggest braces
around initialization of subobject [-Wmissing-braces]
        struct tee_ioctl_open_session_arg sess_arg = {0};
                                                      ^
                                                      {}
3 warnings generated.

One way to fix these warnings is to add additional braces like Clang
suggests; however, there has been a bit of push back from some
maintainers, who just prefer memset as it is unambiguous, doesn't
depend on a particular compiler version, and properly initializes all
subobjects [1][2]. Do that here so there are no more warnings.

[1]: https://lore.kernel.org/lkml/022e41c0-8465-dc7a-a45c-64187ecd9684@amd.com/
[2]: https://lore.kernel.org/lkml/20181128.215241.702406654469517539.davem@davemloft.net/

Fixes: 5fe8b1c ("hwrng: add OP-TEE based rng driver")
Link: ClangBuiltLinux/linux#369
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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-Wmissing-braces [BUG] linux-next This is an issue only seen in linux-next [FIXED][LINUX] development cycle This bug was only present and fixed in a -next or -rc cycle
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