greybus-dev

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Re: [PATCH] staging: greybus: Fix indentation

by Dan Carpenter

On Sun, May 22, 2022 at 09:51:56PM +0300, Uri Arev wrote: > Reported by Checkpatch: > CHECK: Alignment should match open parenthesis > > - Uri > --- This not how you format a patch. Please run checkpatch.pl on your patches. :P regards, dan carpenter

3 years, 2 months

[PATCH] [v2] Kbuild: move to -std=gnu11

by Arnd Bergmann

From: Arnd Bergmann <arnd(a)arndb.de> During a patch discussion, Linus brought up the option of changing the C standard version from gnu89 to gnu99, which allows using variable declaration inside of a for() loop. While the C99, C11 and later standards introduce many other features, most of these are already available in gnu89 as GNU extensions as well. An earlier attempt to do this when gcc-5 started defaulting to -std=gnu11 failed because at the time that caused warnings about designated initializers with older compilers. Now that gcc-5.1 is the minimum compiler version used for building kernels, that is no longer a concern. Similarly, the behavior of 'inline' functions changes between gnu89 and gnu11, but this was taken care of by defining 'inline' to include __attribute__((gnu_inline)) in order to allow building with clang a while ago. One minor issue that remains is an added gcc warning for shifts of negative integers when building with -Werror, which happens with the 'make W=1' option, as well as for three drivers in the kernel that always enable -Werror, but it was only observed with the i915 driver so far. To be on the safe side, add -Wno-shift-negative-value to any -Wextra in a Makefile. Nathan Chancellor reported an additional -Wdeclaration-after-statement warning that appears in a system header on arm, this still needs a workaround. The differences between gnu99, gnu11, gnu1x and gnu17 are fairly minimal and mainly impact warnings at the -Wpedantic level that the kernel never enables. Between these, gnu11 is the newest version that is supported by all supported compiler versions, though it is only the default on gcc-5, while all other supported versions of gcc or clang default to gnu1x/gnu17. Link: https://lore.kernel.org/lkml/CAHk-=wiyCH7xeHcmiFJ-YgXUy2Jaj7pnkdKpcovt8fYbV… Link: https://github.com/ClangBuiltLinux/linux/issues/1603 Suggested-by: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Masahiro Yamada <masahiroy(a)kernel.org> Cc: linux-kbuild(a)vger.kernel.org Cc: llvm(a)lists.linux.dev Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- [v2] - added -std=gnu11 back, rather than just relying on the default - minor changes to changelog text --- Documentation/process/programming-language.rst | 4 ++-- .../translations/it_IT/process/programming-language.rst | 4 ++-- .../translations/zh_CN/process/programming-language.rst | 4 ++-- .../translations/zh_TW/process/programming-language.rst | 4 ++-- Makefile | 6 +++--- arch/arm64/kernel/vdso32/Makefile | 2 +- drivers/gpu/drm/i915/Makefile | 1 + drivers/staging/greybus/tools/Makefile | 3 ++- fs/btrfs/Makefile | 1 + scripts/Makefile.extrawarn | 1 + 10 files changed, 17 insertions(+), 13 deletions(-) diff --git a/Documentation/process/programming-language.rst b/Documentation/process/programming-language.rst index ec474a70a02f..894f2a6eb9db 100644 --- a/Documentation/process/programming-language.rst +++ b/Documentation/process/programming-language.rst @@ -5,8 +5,8 @@ Programming Language The kernel is written in the C programming language [c-language]_. More precisely, the kernel is typically compiled with ``gcc`` [gcc]_ -under ``-std=gnu89`` [gcc-c-dialect-options]_: the GNU dialect of ISO C90 -(including some C99 features). ``clang`` [clang]_ is also supported, see +under ``-std=gnu11`` [gcc-c-dialect-options]_: the GNU dialect of ISO C11 +(including some C17 features). ``clang`` [clang]_ is also supported, see docs on :ref:`Building Linux with Clang/LLVM <kbuild_llvm>`. This dialect contains many extensions to the language [gnu-extensions]_, diff --git a/Documentation/translations/it_IT/process/programming-language.rst b/Documentation/translations/it_IT/process/programming-language.rst index 41db2598ce11..aa21097737ae 100644 --- a/Documentation/translations/it_IT/process/programming-language.rst +++ b/Documentation/translations/it_IT/process/programming-language.rst @@ -10,8 +10,8 @@ Linguaggio di programmazione Il kernel è scritto nel linguaggio di programmazione C [it-c-language]_. Più precisamente, il kernel viene compilato con ``gcc`` [it-gcc]_ usando -l'opzione ``-std=gnu89`` [it-gcc-c-dialect-options]_: il dialetto GNU -dello standard ISO C90 (con l'aggiunta di alcune funzionalità da C99). +l'opzione ``-std=gnu11`` [it-gcc-c-dialect-options]_: il dialetto GNU +dello standard ISO C11 (con l'aggiunta di alcune funzionalità da C17). Linux supporta anche ``clang`` [it-clang]_, leggete la documentazione :ref:`Building Linux with Clang/LLVM <kbuild_llvm>`. diff --git a/Documentation/translations/zh_CN/process/programming-language.rst b/Documentation/translations/zh_CN/process/programming-language.rst index 2a47a1d2ec20..58d2b3bd2d85 100644 --- a/Documentation/translations/zh_CN/process/programming-language.rst +++ b/Documentation/translations/zh_CN/process/programming-language.rst @@ -9,8 +9,8 @@ ============ 内核是用C语言 :ref:`c-language <cn_c-language>` 编写的。更准确地说，内核通常是用 :ref:`gcc <cn_gcc>` -在 ``-std=gnu89`` :ref:`gcc-c-dialect-options <cn_gcc-c-dialect-options>` 下编译的：ISO C90的 GNU 方言（ -包括一些C99特性） +在 ``-std=gnu11`` :ref:`gcc-c-dialect-options <cn_gcc-c-dialect-options>` 下编译的：ISO C11的 GNU 方言（ +包括一些C17特性）这种方言包含对语言 :ref:`gnu-extensions <cn_gnu-extensions>` 的许多扩展，当然，它们许多都在内核中使用。 diff --git a/Documentation/translations/zh_TW/process/programming-language.rst b/Documentation/translations/zh_TW/process/programming-language.rst index 54e3699eadf8..235de05f7e2c 100644 --- a/Documentation/translations/zh_TW/process/programming-language.rst +++ b/Documentation/translations/zh_TW/process/programming-language.rst @@ -12,8 +12,8 @@ ============ 內核是用C語言 :ref:`c-language <tw_c-language>` 編寫的。更準確地說，內核通常是用 :ref:`gcc <tw_gcc>` -在 ``-std=gnu89`` :ref:`gcc-c-dialect-options <tw_gcc-c-dialect-options>` 下編譯的：ISO C90的 GNU 方言（ -包括一些C99特性） +在 ``-std=gnu11`` :ref:`gcc-c-dialect-options <tw_gcc-c-dialect-options>` 下編譯的：ISO C11的 GNU 方言（ +包括一些C17特性）這種方言包含對語言 :ref:`gnu-extensions <tw_gnu-extensions>` 的許多擴展，當然，它們許多都在內核中使用。 diff --git a/Makefile b/Makefile index 289ce2be8032..66496eaeb9ec 100644 --- a/Makefile +++ b/Makefile @@ -432,7 +432,7 @@ HOSTCXX = g++ endif export KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ - -O2 -fomit-frame-pointer -std=gnu89 + -O2 -fomit-frame-pointer -std=gnu11 export KBUILD_USERLDFLAGS := KBUILD_HOSTCFLAGS := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) @@ -515,7 +515,7 @@ KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ -Werror=implicit-function-declaration -Werror=implicit-int \ -Werror=return-type -Wno-format-security \ - -std=gnu89 + -std=gnu11 KBUILD_CPPFLAGS := -D__KERNEL__ KBUILD_AFLAGS_KERNEL := KBUILD_CFLAGS_KERNEL := @@ -782,7 +782,7 @@ KBUILD_CFLAGS += $(KBUILD_CFLAGS-y) $(CONFIG_CC_IMPLICIT_FALLTHROUGH) ifdef CONFIG_CC_IS_CLANG KBUILD_CPPFLAGS += -Qunused-arguments -# The kernel builds with '-std=gnu89' so use of GNU extensions is acceptable. +# The kernel builds with '-std=gnu11' so use of GNU extensions is acceptable. KBUILD_CFLAGS += -Wno-gnu # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the # source of a reference will be _MergedGlobals and not on of the whitelisted names. diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile index 6c01b63ff56d..9378ea055bf2 100644 --- a/arch/arm64/kernel/vdso32/Makefile +++ b/arch/arm64/kernel/vdso32/Makefile @@ -68,7 +68,7 @@ VDSO_CFLAGS += -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common \ -Werror-implicit-function-declaration \ -Wno-format-security \ - -std=gnu89 + -std=gnu11 VDSO_CFLAGS += -O2 # Some useful compiler-dependent flags from top-level Makefile VDSO_CFLAGS += $(call cc32-option,-Wdeclaration-after-statement,) diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 1b62b9f65196..1618a6e0af4e 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -17,6 +17,7 @@ subdir-ccflags-y += -Wno-unused-parameter subdir-ccflags-y += -Wno-type-limits subdir-ccflags-y += -Wno-missing-field-initializers subdir-ccflags-y += -Wno-sign-compare +subdir-ccflags-y += -Wno-shift-negative-value subdir-ccflags-y += $(call cc-disable-warning, unused-but-set-variable) subdir-ccflags-y += $(call cc-disable-warning, frame-address) subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror diff --git a/drivers/staging/greybus/tools/Makefile b/drivers/staging/greybus/tools/Makefile index ad0ae8053b79..a3bbd73171f2 100644 --- a/drivers/staging/greybus/tools/Makefile +++ b/drivers/staging/greybus/tools/Makefile @@ -12,7 +12,8 @@ CFLAGS += -std=gnu99 -Wall -Wextra -g \ -Wredundant-decls \ -Wcast-align \ -Wsign-compare \ - -Wno-missing-field-initializers + -Wno-missing-field-initializers \ + -Wno-shift-negative-value CC := $(CROSS_COMPILE)gcc diff --git a/fs/btrfs/Makefile b/fs/btrfs/Makefile index 4188ba3fd8c3..99f9995670ea 100644 --- a/fs/btrfs/Makefile +++ b/fs/btrfs/Makefile @@ -17,6 +17,7 @@ subdir-ccflags-y += $(condflags) subdir-ccflags-y += -Wno-missing-field-initializers subdir-ccflags-y += -Wno-sign-compare subdir-ccflags-y += -Wno-type-limits +subdir-ccflags-y += -Wno-shift-negative-value obj-$(CONFIG_BTRFS_FS) := btrfs.o diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index 8be892887d71..650d0b8ceec3 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -36,6 +36,7 @@ KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation) KBUILD_CFLAGS += -Wno-missing-field-initializers KBUILD_CFLAGS += -Wno-sign-compare KBUILD_CFLAGS += -Wno-type-limits +KBUILD_CFLAGS += -Wno-shift-negative-value KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1 -- 2.29.2

3 years, 2 months

[PATCH] staging: greybus: correct typo in comment

by Nickalas Cason

Correct misspelling in comment. Issue found with checkpatch. Signed-off-by: Nickalas Cason <nickalas(a)cason.dev> --- drivers/staging/greybus/arche-platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index e374dfc0c92f..fcbd5f71eff2 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -591,7 +591,7 @@ static __maybe_unused int arche_platform_suspend(struct device *dev) static __maybe_unused int arche_platform_resume(struct device *dev) { /* - * Atleast for ES2 we have to meet the delay requirement between + * At least for ES2 we have to meet the delay requirement between * unipro switch and AP bridge init, depending on whether bridge is in * OFF state or standby state. * -- 2.35.1

3 years, 3 months

[PATCH] staging: greybus: tools: fix spelling

by Vaibhav Nagare

Fixed the spelling mistake of appendation to appending. Signed-off-by: Vaibhav Nagare <vnagare(a)redhat.com> --- drivers/staging/greybus/tools/loopback_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/greybus/tools/loopback_test.c b/drivers/staging/greybus/tools/loopback_test.c index 867bf289df2e..4c42e393cd3d 100644 --- a/drivers/staging/greybus/tools/loopback_test.c +++ b/drivers/staging/greybus/tools/loopback_test.c @@ -533,7 +533,7 @@ static int log_results(struct loopback_test *t) fd = open(file_name, O_WRONLY | O_CREAT | O_APPEND, 0644); if (fd < 0) { - fprintf(stderr, "unable to open %s for appendation\n", file_name); + fprintf(stderr, "unable to open %s for appending\n", file_name); abort(); } -- 2.27.0

3 years, 3 months

[PATCH v2] greybus: audio_codec: initialize data to silence static checker warnings

by Xiaomeng Tong

These three declares are here: struct gbaudio_data_connection *data; Since all three of these functions check for if the codec->module_list is empty at the start of the function so these are not real bugs to bypass 'if (!data) {'. To avoid static checker warnings like Smatch, initialize the data with NULL. Signed-off-by: Xiaomeng Tong <xiam0nd.tong(a)gmail.com> --- changes since v1: - not bug, but can avoid warnnings (Dan Carpenter) v1: https://lore.kernel.org/lkml/20220327060120.4316-1-xiam0nd.tong@gmail.com/ --- drivers/staging/greybus/audio_codec.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c index b589cf6b1d03..939e05af4dcf 100644 --- a/drivers/staging/greybus/audio_codec.c +++ b/drivers/staging/greybus/audio_codec.c @@ -397,7 +397,7 @@ static int gbcodec_hw_params(struct snd_pcm_substream *substream, u8 sig_bits, channels; u32 format, rate; struct gbaudio_module_info *module; - struct gbaudio_data_connection *data; + struct gbaudio_data_connection *data = NULL; struct gb_bundle *bundle; struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev); struct gbaudio_stream_params *params; @@ -498,7 +498,7 @@ static int gbcodec_prepare(struct snd_pcm_substream *substream, { int ret; struct gbaudio_module_info *module; - struct gbaudio_data_connection *data; + struct gbaudio_data_connection *data = NULL; struct gb_bundle *bundle; struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev); struct gbaudio_stream_params *params; @@ -562,7 +562,7 @@ static int gbcodec_prepare(struct snd_pcm_substream *substream, static int gbcodec_mute_stream(struct snd_soc_dai *dai, int mute, int stream) { int ret; - struct gbaudio_data_connection *data; + struct gbaudio_data_connection *data = NULL; struct gbaudio_module_info *module; struct gb_bundle *bundle; struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev); -- 2.17.1

3 years, 3 months

[PATCH v3 0/2] staging: greybus: fix warnings reported by checkpatch

by Jaehee Park

The first patch corrects a typo in a comment. The second patch removes an empty callback function. Changes in version 3: Edited the second patch in the patchset to remove the entire empty function with a void return type instead of removing just the return statement within the function. Jaehee Park (2): staging: greybus: correct typo in comment staging: greybus: remove empty callback function drivers/staging/greybus/arche-apb-ctrl.c | 2 +- drivers/staging/greybus/audio_codec.c | 8 -------- 2 files changed, 1 insertion(+), 9 deletions(-) -- 2.25.1

3 years, 3 months

[PATCH] greybus: using pm_runtime_resume_and_get to simplify the code

by cgel.zte＠gmail.com

From: Minghao Chi <chi.minghao(a)zte.com.cn> Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and pm_runtime_put_noidle. This change is just to simplify the code, no actual functional changes. Reported-by: Zeal Robot <zealci(a)zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao(a)zte.com.cn> --- drivers/greybus/core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/greybus/core.c b/drivers/greybus/core.c index e546c6431877..434aa5d9dd47 100644 --- a/drivers/greybus/core.c +++ b/drivers/greybus/core.c @@ -174,11 +174,9 @@ static int greybus_probe(struct device *dev) if (!id) return -ENODEV; - retval = pm_runtime_get_sync(&bundle->intf->dev); - if (retval < 0) { - pm_runtime_put_noidle(&bundle->intf->dev); + retval = pm_runtime_resume_and_get(&bundle->intf->dev); + if (retval < 0) return retval; - } retval = gb_control_bundle_activate(bundle->intf->control, bundle->id); if (retval) { -- 2.25.1

3 years, 3 months

[PATCH] Staging: greybus: audio manager module: make char array const

by Ian Cowan

Make the envp char array a const in the send_add_uevent function since the value will never change. It will remain an array of the pointers to the various char arrays. There does exist a warning when running the checkpatch script to make this a static variable, but there does not appear to be any advantage to make this change. Signed-off-by: Ian Cowan <ian(a)linux.cowan.aero> --- drivers/staging/greybus/audio_manager_module.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/greybus/audio_manager_module.c b/drivers/staging/greybus/audio_manager_module.c index 0a0f0a394c84..c9d223b0e541 100644 --- a/drivers/staging/greybus/audio_manager_module.c +++ b/drivers/staging/greybus/audio_manager_module.c @@ -159,7 +159,7 @@ static void send_add_uevent(struct gb_audio_manager_module *module) char ip_devices_string[64]; char op_devices_string[64]; - char *envp[] = { + const char *envp[] = { name_string, vid_string, pid_string, -- 2.32.0

3 years, 3 months

[PATCH] staging: greybus: replace zero-element array with flexible-array

by Jaehee Park

Zero-length and one-element arrays are deprecated. Flexible-array members should be used instead. Flexible-array members are recommended because this is the way the kernel expects dynamically sized trailing elements to be declared. Refer to Documentation/process/deprecated.rst. Change the zero-length array, buf, in the struct gb_usb_hub_control_response to a flexible array. And add wLength as a member of the struct so that the struct is not a zero-sized struct. Issue found by flexible_array coccinelle script. Signed-off-by: Jaehee Park <jhpark1013(a)gmail.com> --- I have a question for the authors: I saw a fixme comment in the hub_control function in usb.c: / FIXME: handle unspecified lengths / I was wondering why this comment was left there? In this patch, I'm using this struct: struct gb_usb_hub_control_response { __le16 wLength; u8 buf[]; }; And instead of using response_size, I'm doing this: struct gb_usb_hub_control_response *response; And using sizeof(*response) as the input to gb_operation_create. Would the flexible array address the handling of unspecified lengths issue (in the fixme comment)? drivers/staging/greybus/usb.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/staging/greybus/usb.c b/drivers/staging/greybus/usb.c index 8e9d9d59a357..d0b2422401df 100644 --- a/drivers/staging/greybus/usb.c +++ b/drivers/staging/greybus/usb.c @@ -27,7 +27,8 @@ struct gb_usb_hub_control_request { }; struct gb_usb_hub_control_response { - u8 buf[0]; + __le16 wLength; + u8 buf[]; }; struct gb_usb_device { @@ -102,16 +103,14 @@ static int hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, struct gb_operation *operation; struct gb_usb_hub_control_request *request; struct gb_usb_hub_control_response *response; - size_t response_size; int ret; /* FIXME: handle unspecified lengths */ - response_size = sizeof(*response) + wLength; operation = gb_operation_create(dev->connection, GB_USB_TYPE_HUB_CONTROL, sizeof(*request), - response_size, + sizeof(*response), GFP_KERNEL); if (!operation) return -ENOMEM; -- 2.25.1

3 years, 3 months

[PATCH v2 0/2] staging: greybus: fix warnings reported by checkpatch

by Jaehee Park

The first patch corrects a typo in a comment. The second patch removes an unneeded return. Changes in version 2: - edited the subject to be more concise. - edited the log message to be more descriptive. Jaehee Park (2): staging: greybus: correct typo in comment staging: greybus: remove unneeded return drivers/staging/greybus/arche-apb-ctrl.c | 2 +- drivers/staging/greybus/audio_codec.c | 1 - 2 files changed, 1 insertion(+), 2 deletions(-) -- 2.25.1

3 years, 3 months

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