[net-next,PATCH v7 2/8] net: stmmac: dwmac-stm32: Separate out external clock rate validation

[Christophe ROULLIER]

Hi Mark,

Sorry, issue found, I will push fix this morning.

Regards.

Christophe.

On 6/26/24 12:38, Mark Brown wrote:
> On Tue, Jun 11, 2024 at 10:36:00AM +0200, Christophe Roullier wrote:
>> From: Marek Vasut <marex at denx.de>
>>
>> Pull the external clock frequency validation into a separate function,
>> to avoid conflating it with external clock DT property decoding and
>> clock mux register configuration. This should make the code easier to
>> read and understand.
> For the past few days networking has been broken on the Avenger 96, a
> stm32mp157a based platform.  The stm32-dwmac driver fails to probe:
>
> <6>[    1.894271] stm32-dwmac 5800a000.ethernet: IRQ eth_wake_irq not found
> <6>[    1.899694] stm32-dwmac 5800a000.ethernet: IRQ eth_lpi not found
> <6>[    1.905849] stm32-dwmac 5800a000.ethernet: IRQ sfty not found
> <3>[    1.912304] stm32-dwmac 5800a000.ethernet: Unable to parse OF data
> <3>[    1.918393] stm32-dwmac 5800a000.ethernet: probe with driver stm32-dwmac failed with error -75
>
> which looks a bit odd given the commit contents but I didn't look at the
> driver code at all.
>
> Full boot log here:
>
>     https://lava.sirena.org.uk/scheduler/job/467150
>
> A working equivalent is here:
>
>     https://lava.sirena.org.uk/scheduler/job/466518
>
> A bisection identified this commit as being responsible, log below:
>
> git bisect start
> # status: waiting for both good and bad commits
> # bad: [0fc4bfab2cd45f9acb86c4f04b5191e114e901ed] Add linux-next specific files for 20240625
> git bisect bad 0fc4bfab2cd45f9acb86c4f04b5191e114e901ed
> # status: waiting for good commit(s), bad commit known
> # good: [3d9217c41c07b72af3a5c147cb82c75f757f4200] Merge branch 'for-linux-next-fixes' of https://gitlab.freedesktop.org/drm/misc/kernel.git
> git bisect good 3d9217c41c07b72af3a5c147cb82c75f757f4200
> # bad: [5699faecf4e2347f81eea62db0455feb4d794537] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
> git bisect bad 5699faecf4e2347f81eea62db0455feb4d794537
> # good: [ba73da675606373565868962ad8c615f175662ed] Merge branch 'fs-next' of linux-next
> git bisect good ba73da675606373565868962ad8c615f175662ed
> # bad: [7e7c714a36a5b10e391168e7e8145060e041ea12] Merge branch 'af_unix-remove-spin_lock_nested-and-convert-to-lock_cmp_fn'
> git bisect bad 7e7c714a36a5b10e391168e7e8145060e041ea12
> # good: [93d4e8bb3f137e8037a65ea96f175f81c25c50e5] Merge tag 'wireless-next-2024-06-07' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
> git bisect good 93d4e8bb3f137e8037a65ea96f175f81c25c50e5
> # bad: [4314175af49668ab20c0d60d7d7657986e1d0c7c] Merge branch 'net-smc-IPPROTO_SMC'
> git bisect bad 4314175af49668ab20c0d60d7d7657986e1d0c7c
> # good: [811efc06e5f30a57030451b2d1998aa81273baf8] net/tcp: Move tcp_inbound_hash() from headers
> git bisect good 811efc06e5f30a57030451b2d1998aa81273baf8
> # good: [5f703ce5c981ee02c00e210d5b155bbbfbf11263] net: hsr: Send supervisory frames to HSR network with ProxyNodeTable data
> git bisect good 5f703ce5c981ee02c00e210d5b155bbbfbf11263
> # bad: [6c3282a6b296385bee2c383442c39f507b0d51dd] net: stmmac: add select_pcs() platform method
> git bisect bad 6c3282a6b296385bee2c383442c39f507b0d51dd
> # bad: [404dbd26322f50c8123bf5bff9a409356889035f] net: qrtr: ns: Ignore ENODEV failures in ns
> git bisect bad 404dbd26322f50c8123bf5bff9a409356889035f
> # bad: [c60a54b52026bd2c9a88ae00f2aac7a67fed8e38] net: stmmac: dwmac-stm32: Clean up the debug prints
> git bisect bad c60a54b52026bd2c9a88ae00f2aac7a67fed8e38
> # bad: [582ac134963e2d5cf6c45db027e156fcfb7f7678] net: stmmac: dwmac-stm32: Separate out external clock rate validation
> git bisect bad 582ac134963e2d5cf6c45db027e156fcfb7f7678
> # good: [8a9044e5169bab7a8edadb4ceb748391657f0d7f] dt-bindings: net: add STM32MP13 compatible in documentation for stm32
> git bisect good 8a9044e5169bab7a8edadb4ceb748391657f0d7f
> # first bad commit: [582ac134963e2d5cf6c45db027e156fcfb7f7678] net: stmmac: dwmac-stm32: Separate out external clock rate validation