RE: [PATCH v2 RESEND] soc/fsl/qe: fix usb.c build errors

-----Original Message-----
From: Randy Dunlap <rdunlap@infradead.org>
Sent: Sunday, May 21, 2023 5:52 PM
To: linux-kernel@vger.kernel.org
Cc: Randy Dunlap <rdunlap@infradead.org>; kernel test robot
[off-list ref]; Michael Ellerman [off-list ref]; Christophe
Leroy [off-list ref]; Leo Li [off-list ref];
Masahiro Yamada [off-list ref]; Nicolas Schier
[off-list ref]; Qiang Zhao [off-list ref]; linuxppc-dev
[off-list ref]; linux-arm-kernel@lists.infradead.org;
Kumar Gala [off-list ref]
Subject: [PATCH v2 RESEND] soc/fsl/qe: fix usb.c build errors

Fix build errors in soc/fsl/qe/usb.c when QUICC_ENGINE is not set.
This happens when PPC_EP88XC is set, which selects CPM1 & CPM.
When CPM is set, USB_FSL_QE can be set without QUICC_ENGINE being set.
When USB_FSL_QE is set, QE_USB deafults to y, which causes build errors
when QUICC_ENGINE is not set. Making QE_USB depend on QUICC_ENGINE
prevents QE_USB from defaulting to y.

Fixes these build errors:

drivers/soc/fsl/qe/usb.o: in function `qe_usb_clock_set':
usb.c:(.text+0x1e): undefined reference to `qe_immr'
powerpc-linux-ld: usb.c:(.text+0x2a): undefined reference to `qe_immr'
powerpc-linux-ld: usb.c:(.text+0xbc): undefined reference to `qe_setbrg'
powerpc-linux-ld: usb.c:(.text+0xca): undefined reference to `cmxgcr_lock'
powerpc-linux-ld: usb.c:(.text+0xce): undefined reference to `cmxgcr_lock'

Fixes: 5e41486c408e ("powerpc/QE: add support for QE USB clocks routing")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <redacted>
Link:
https://lore.k/
ernel.org%2Fall%2F202301101500.pillNv6R-
lkp%40intel.com%2F&data=05%7C01%7Cleoyang.li%40nxp.com%7Ca43927d9
554b4434845608db5a4e0db5%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%
7C0%7C638203063513512722%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4
wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7
C%7C%7C&sdata=LkLi6lS%2Fh3pVXW%2Bg9fauCWmptC9lRt3sTdkvn0Extqk%
3D&reserved=0
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Christophe Leroy <redacted>
Cc: Leo Li <redacted>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nicolas Schier <redacted>
Cc: Qiang Zhao <qiang.zhao@nxp.com>
Cc: linuxppc-dev <redacted>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Kumar Gala <redacted>

Applied for next.  Thanks.

Regards,
Leo