RE: [usb:usb-next 35/35] kismet: WARNING: unmet direct dependencies detected for USB_RZV2M_USB3DRD when selected by USB_XHCI_RZV2M

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Hi all,

> Subject: [usb:usb-next 35/35] kismet: WARNING: unmet direct dependencies
> detected for USB_RZV2M_USB3DRD when selected by USB_XHCI_RZV2M
> 
> tree:
> head:   c52c9acc415eb6ff54f658492f8c53da0fc3528a
> commit: c52c9acc415eb6ff54f658492f8c53da0fc3528a [35/35] xhci: host: Add
> Renesas RZ/V2M SoC support
>         git remote add usb
>         git fetch --no-tags usb usb-next
>         git checkout c52c9acc415eb6ff54f658492f8c53da0fc3528a
>         # 1. reproduce by kismet
>            # install kmax per
>            kismet --linux-ksrc=linux --selectees CONFIG_USB_RZV2M_USB3DRD --
> selectors CONFIG_USB_XHCI_RZV2M -a=csky
>         # 2. reproduce by make
>            # save the config file to linux source tree
>            cd linux
>            make ARCH=csky olddefconfig
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
> 
> kismet warnings: (new ones prefixed by >>)
> >> kismet: WARNING: unmet direct dependencies detected for USB_RZV2M_USB3DRD
> when selected by USB_XHCI_RZV2M
>    .config:4492:warning: symbol value 'ONFIG_ARCH_MMAP_RND_BITS_MI' invalid
> for ARCH_MMAP_RND_BITS
> 
>    WARNING: unmet direct dependencies detected for USB_RZV2M_USB3DRD
>      Depends on [n]: USB_SUPPORT [=y] && USB_GADGET [=n] && (ARCH_R9A09G011
> [=n] || COMPILE_TEST [=y])
>      Selected by [y]:
>      - USB_XHCI_RZV2M [=y] && USB_SUPPORT [=y] && USB [=y] && USB_XHCI_HCD
> [=y] && USB_XHCI_PLATFORM [=y] && (ARCH_R9A09G011 [=n] || COMPILE_TEST [=y])

I have investigated this issue, 

Just for testing, I have reverted Arnd's patch[1] and then done the below changes 
which is fixing unmet dependencies reported by the bot.

Looks like USB_RZV2M_USB3DRD should depend upon both USB and USB_GADGET. Previously
It depends only on USB_GADGET.

Also the USB3DRD driver should be in "driver/usb/renesas_usb3drd" directory instead
of "driver/usb/gadget/udc" as both HOST and device ctrlr need this driver.

So not sure, 

1) Use Arnd's patch for fixing this issue

2) Use the changes from [2]

Or

3) Arnd's changes + changes from [2].

Please let me know.

[2]
diff --git a/drivers/usb/renesas_usb3drd/Kconfig b/drivers/usb/renesas_usb3drd/Kconfig
new file mode 100644
index 000000000000..6205d815d283
--- /dev/null
+++ b/drivers/usb/renesas_usb3drd/Kconfig
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config USB_RZV2M_USB3DRD
+	tristate 'Renesas USB3.1 DRD controller'
+	depends on (USB || USB_GADGET) 
+	depends on ARCH_R9A09G011 || COMPILE_TEST
+	default USB_XHCI_RZV2M
+	default USB_RENESAS_USB3
+	help
+	   Renesas USB3.1 DRD controller is a USB DRD controller
+	   that supports both host and device switching.
+
+	   Say "y" to link the driver statically, or "m" to build a
+	   dynamically linked module called "rzv2m_usb3drd".


[1] https://lore.kernel.org/linux-usb/OS0PR01MB592264B5D8BB98A1B2F759C086D39@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#t


Kismet results:
(env_kmax) dasb@ree-du1sdd5:~/linux-next$ kismet --linux-ksrc=. --selectees CONFIG_USB_RZV2M_USB3DRD --selectors CONFIG_USB_XHCI_RZV2M -a=csky
INFO: Computing the build system id for the Linux source..
INFO: Build system id: d48d1edf73bf
INFO: Kismet will analyze the select constructs of the architecture "csky" for unmet direct dependency.
INFO: All times reported are measured using Python's time.perf_counter() utility.
INFO: Prefetching the architecture kclause formulas.
[STEP 1/3] reading kextract file
[STEP 1/3] finished reading kextract file
[STEP 2/3] translated 15981/15981 configuration option dependencies                                                          
[STEP 3/3] converted 16084/16084 constraints to smtlib2 format
[STEP 3/3] pickling the map
[STEP 3/3] done 
INFO: Architecture kclause formulas were loaded. (686.24sec)
INFO: Identifying the select constructs.
INFO: Identification of the select constructs was done in 0.02sec. 1 constructs were found. unmet safe due to syntactical pass: 0. alarms: 1.
INFO: Doing optimized SAT pass for 1 constructs
INFO: 18:33:24 Optimized SAT pass progress:  1/1 (%100).
INFO: Optimized SAT test was done in 0.02sec. 1 constructs with alarms were checked. unmet safe due to optimized SAT test: 1. alarms: 0.
INFO: Doing precise SAT pass for 0 constructs
INFO: 18:33:24 Precise SAT pass progress:  0/0.
INFO: Precise SAT test was done in 0.00sec. 0 constructs with alarms were checked. unmet safe due to precise SAT test: 0. alarms: 0.
INFO: During precise SAT test, 0 models were generated.
INFO: Skipping test case generation since there are no models to generate test cases for.
INFO: Skipping verification since there are no test cases to verify.
INFO: Writing the aggregated summary txt to "kismet_summary_csky.txt".
INFO: Aggregated summary txt was written.
INFO: Writing the summary csv to "kismet_summary_csky.csv".
INFO: Summary csv was written.

(env_kmax) dasb@ree-du1sdd5:~/linux-next$ cat kismet_summary_csky.txt 
= Overall analysis =
Over 1 select constructs, unmet dependency analysis resulted in: 1 safe, 0 alarm.
The analysis was done in 686.27 seconds.

= Timing results (seconds) =
Prefetch arch formulas     : 686.24
Identify constructs        : 0.02
Optimized SAT pass         : 0.02
Precise SAT pass           : 0.00

= Per-stage results =

== Identification of select constructs & udd analysis through syntax ==
1 select constructs identified in the architecture.
0 select constructs were found udd safe through syntax analysis.
1 select constructs were found udd alarm through syntax analysis.

== Optimized SAT pass ==
1 select constructs with alarms from the previous stage were checked during optimized SAT pass.
1 select constructs were found udd SAFE through optimized SAT pass.
0 select constructs were found udd ALARM through optimized SAT pass.

== Precise SAT pass ==
0 select constructs with alarms from the previous stage were checked during precise SAT pass.
0 select constructs were found udd SAFE through precise SAT pass.
0 select constructs were found udd ALARM through precise SAT pass.
(env_kmax) dasb@ree-du1sdd5:~/linux-next$ cat kismet_summary_csky.csv 
arch,selectee,selector,visib_id,constraint_type,analysis_result,testcase
csky,CONFIG_USB_RZV2M_USB3DRD,CONFIG_USB_XHCI_RZV2M,0,0,UNMET_SAFE_OPTIMIZED_PASS,N/A

Cheers,
Biju




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