[PATCH v3] Bluetooth: Fix code style error

[PATCH v3] Bluetooth: Fix code style error

[Jeremy Dean]

checkpatch.pl flags the zero-length array members in struct
qca_dump_hdr:

    ERROR: Use C99 flexible arrays - see
    https://docs.kernel.org/process/deprecated.html#zero-length-and-one-element-arrays
    #3110: FILE: drivers/bluetooth/btusb.c:3110:
    + u8 data0[0];

Replace them with DECLARE_FLEX_ARRAY(), since C99 flexible array
members are not permitted inside unions or as the sole member of
a struct.

The struct layout is unchanged, and everything compiles with the
change.

Link: https://docs.kernel.org/process/deprecated.html#zero-length-and-one-element-arrays
Signed-off-by: Jeremy Dean <deaner92@yahoo.com>
---
 drivers/bluetooth/btusb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 8f7ed469cac6..b78c4a0e75fd 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3103,10 +3103,10 @@ struct qca_dump_hdr {
 	__le16 seqno;
 	u8 reserved;
 	union {
-		u8 data[0];
+		DECLARE_FLEX_ARRAY(u8, data);
 		struct {
 			__le32 ram_dump_size;
-			u8 data0[0];
+			DECLARE_FLEX_ARRAY(u8, data0);
 		} __packed;
 	};
 } __packed;
-- 
2.43.0

Re: [PATCH v3] Bluetooth: Fix code style error

[Markus Elfring]

…
> ---
>  drivers/bluetooth/btusb.c | 4 ++--…

Some contributors would appreciate patch version descriptions.
https://lore.kernel.org/all/?q=%22This+looks+like+a+new+version+of+a+previously+submitted+patch%22
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v7.2-rc7#n310

Regards,
Markus

RE: [v3] Bluetooth: Fix code style error

[bluez.test.bot]

[-- Attachment #1: Type: text/plain, Size: 1181 bytes --]

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=1151528

---Test result---

Test Summary:
CheckPatch                    PASS      0.55 seconds
VerifyFixes                   PASS      0.07 seconds
VerifySignedoff               PASS      0.07 seconds
GitLint                       PASS      0.21 seconds
SubjectPrefix                 PASS      0.06 seconds
BuildKernel                   PASS      28.53 seconds
CheckAllWarning               PASS      35.29 seconds
CheckSparse                   PASS      29.87 seconds
BuildKernel32                 PASS      26.98 seconds
CheckKernelLLVM               SKIP      0.00 seconds
TestRunnerSetup               PASS      509.27 seconds
IncrementalBuild              PASS      25.91 seconds

Details
##############################
Test: CheckKernelLLVM - SKIP
Desc: Build kernel with LLVM + context analysis
Output:
Clang not found


https://github.com/bluez/bluetooth-next/pull/652

---
Regards,
Linux Bluetooth

RE: [v3] Bluetooth: Fix code style error

[bluez.test.bot]

[-- Attachment #1: Type: text/plain, Size: 1019 bytes --]

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/series/1151528/

---Test result---

Test Summary:
CheckPatch                    PASS      0.92 seconds
VerifyFixes                   PASS      0.13 seconds
VerifySignedoff               PASS      0.12 seconds
GitLint                       PASS      0.32 seconds
SubjectPrefix                 PASS      0.20 seconds
BuildKernel                   PASS      27.62 seconds
CheckAllWarning               PASS      32.08 seconds
CheckSparse                   PASS      35.24 seconds
BuildKernel32                 PASS      28.23 seconds
CheckKernelLLVM               PASS      43.62 seconds
TestRunnerSetup               PASS      730.95 seconds
IncrementalBuild              PASS      26.45 seconds



https://github.com/bluez/bluetooth-next/pull/746

---
Regards,
Linux Bluetooth

Re: [PATCH v3] Bluetooth: Fix code style error

[patchwork-bot+bluetooth]

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@intel.com>:

On Tue, 25 Aug 2026 12:22:07 +0000 you wrote:
> checkpatch.pl flags the zero-length array members in struct
> qca_dump_hdr:
> 
>     ERROR: Use C99 flexible arrays - see
>     https://docs.kernel.org/process/deprecated.html#zero-length-and-one-element-arrays
>     #3110: FILE: drivers/bluetooth/btusb.c:3110:
>     + u8 data0[0];
> 
> [...]

Here is the summary with links:
  - [v3] Bluetooth: Fix code style error
    https://git.kernel.org/bluetooth/bluetooth-next/c/ca10117e55df

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
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